Phylogenetically controlled studies across multiple species correct for taxonomic confounds in physiological performance traits. Therefore, they are preferred over comparisons of two or few closely‐related species. Funding bodies, referees and journal editors nowadays often even reject to consider detailed comparisons of two or few closely related species. Here, we plea for a less dogmatic stance on such comparisons, because phylogenetic studies come with their own limitations similar in magnitude as those of two‐species (...) class='Hi'>comparisons. Two‐species comparisons are particularly relevant and instructive for understanding physiological pathways and de novo mutations in three contexts: in a purely mechanistic context, when differences in the regulation of a trait are the focus of investigation, when a physiological trait lacks a direct connection to fitness, and when physiological measures cannot easily be standardized among laboratories. In conclusion, phylogenetic comparative and two‐species studies have different strengths and weaknesses and combining these complementary approaches will help integrating biology. (shrink)

Cross-species comparisons are benefited by compatible datasets; conclusions related to phylogenetic comparisons, questions on convergent and divergent evolution, or homologs versus analogs can only be made when the behaviors being measured are comparable. A direct comparison of the social function of physical contact across two disparate taxa is possible only if data collection and analyses methodologies are analogous. We identify and discuss the parameters, assumptions and measurement schemes applicable to multiple taxa and species that facilitate cross- (...) class='Hi'>species comparisons. To illustrate our proposed guidelines for evaluating the role played by tactile contact in social behavior across disparate taxa, this paper presents data on mother-offspring relationships in the two species studied by the authors: chimpanzees (Pan troglodytes schweinfurthii) and dolphins (bottlenose and spotted, Tursiops truncatus and Stenella frontalis, respectively). Cross-species comparative studies allow for a more comprehensive assessment of the similarities and differences with respect to how animals traverse the relationships that form their social groups and societies. (shrink)

One of the biggest problems in applications of animal welfare science is our ability to make comparisons between different individuals, both within and across species. Although welfare science provides methods for measuring the welfare of individual animals, there’s no established method for comparing measures between individuals. In this paper I diagnose this problem as one of underdetermination—there are multiple conclusions given the data, arising from two sources of variation that we cannot distinguish: variation in the underlying target variable (...) (welfare experience) and in the relationship of measured indicators to the target. I then describe some of the possible methods of making comparisons, based on the use of similarity assumptions that will have greater or lesser justification in different circumstances, and the alternative methods we may use when direct comparisons are not possible. In the end, all our available options for making welfare comparisons are imperfect, and we need to make explicit context-specific decisions about which will be best for the task at hand while acknowledging their potential limitations. Future developments in our understanding of the biology of sentience will help strengthen our methods of making comparisons. (shrink)

The Plant Ontology (PO) is a community resource consisting of standardized terms, definitions, and logical relations describing plant structures and development stages, augmented by a large database of annotations from genomic and phenomic studies. This paper describes the structure of the ontology and the design principles we used in constructing PO terms for plant development stages. It also provides details of the methodology and rationale behind our revision and expansion of the PO to cover development stages for all plants, particularly (...) the land plants (bryophytes through angiosperms). As a case study to illustrate the general approach, we examine variation in gene expression across embryo development stages in Arabidopsis and maize, demonstrating how the PO can be used to compare patterns of expression across stages and in developmentally different species. Although many genes appear to be active throughout embryo development, we identified a small set of uniquely expressed genes for each stage of embryo development and also between the two species. Evaluating the different sets of genes expressed during embryo development in Arabidopsis or maize may inform future studies of the divergent developmental pathways observed in monocotyledonous versus dicotyledonous species. The PO and its annotation databasemake plant data for any species more discoverable and accessible through common formats, thus providing support for applications in plant pathology, image analysis, and comparative development and evolution. (shrink)

This paper seeks to exhibit and explain, by way of comparison, two ideal kinds of knowledge: knowledge based on classifications according to genera and species, as in Aristotelianism and common sense, and scientific knowledge based on the application of laws of nature. I will proceed by attempting (1) to determine the role that presuppositions play in knowledge in general by means of the distinction between content and form; (2) to describe and explain the main features of both ideal forms (...) of knowledge; and, finally, (3) to analyze the relation between these two forms of knowledge as it is presented in Eddington's celebrated discussion of the “two tables”. I will be critical of the widespread view that modern science is the correct form of knowledge, and that common sense is merely an illusion. (shrink)

Comparison between different animal species is omnipresent in the history of science and medicine but rarely subject to focussed historical analysis. The articles in the “Working Across Species” topical collection address this deficit by looking directly at the practical and epistemic work of cross-species comparison. Drawn from papers presented at a Wellcome-Trust-funded workshop in 2016, these papers investigate various ways that comparison has been made persuasive and successful, in multiple locations, by diverse disciplines, over the course of (...) two centuries. They explore the many different animal features that have been considered to be comparable, and the ways that animals have shaped science and medicine through the use of comparison. Authors demonstrate that comparison between species often transcended the range of practices typically employed with experimental animal models, where standardised practises and apparatus were applied to standardised bodies to produce generalizable, objective data; instead, comparison across species has often engaged diverse groups of non-standard species, made use of subjective inferences about phenomena that cannot be directly observed, and inspired analogies that linked physiological and behavioural characteristics with the apparent affective state of non-human animals. Moreover, such comparative practices have also provided unusually fruitful opportunities for collaborative connections between different research traditions and disciplines. (shrink)

There are two strategies for engineering species for conservation purposes, de-extinction and gene drives. Engineering species for conservation purposes is not in principle wrong, and on common criteria for assessing conservation interventions there may well be cases in which de-extinction and gene drives are evaluated positively in comparison to other possible strategies. De-extinction is not as transformative a conservation technique as it initially appears. It is largely dependent, as a conservation activity, upon traditional conservation practices, such as captive (...) breeding programs, species reintroductions, and habitat improvement and protection. In contrast, gene drives have the potential to significantly restructure how conservation problems are framed and approached. Gene drives are therefore a much more disruptive technology for conservation philosophy and practice. (shrink)

Garnett and Christidis (2017) [hereafter GC] recently proposed that the International Union of the Biological Sciences should centrally regulate the taxonomy of complex organisms. Their proposal was met with much criticism (e.g. Hołyński 2017; Thomson et al., 2018), and perhaps most extensively from Raposo et al. (2017) in this journal. The main target of this criticism was GC’s call to, first, “restrict the freedom of taxonomic action”, and, second, to let social, political and conservation values weigh in on species (...) classification. Some commentators even went as far as to draw a comparison with the infamous Lysenko-case of state-controlled and heavily restricted science (Raposo et al. 2017, 181; Hołyński 2017, 12). This comment will argue, without thereby endorsing GC’s position, that these two aspects of their views need not be as threatening as this comparison suggests, and indeed are very reasonable. (shrink)

Studying the similarities and differences in socio-communicative behavior between chimpanzees and bonobos is critical to increasing our understanding of the evolution of human sociality and communication. Both species rely heavily on the use of vocalizations during communicative interactions, although the form and function of these signals may vary between the two ape species. For example, bonobo vocalizations seem to be structurally more complex than those produced by chimpanzees, and calls seem to be directed to individuals not in immediate (...) physical proximity. Both species, however, make use of communicative signals from different modalities concurrently, particularly vocalizations and manual gestures. However, this multimodal communication is more commonly observed in chimpanzees when compared to bonobos, who more frequently use vocalizations exclusively, without signals from additional modalities. In addition, there are a number of marked differences in social characteristics between the two species. Though both species exhibit fission–fusion behavior, chimpanzees do so more often, potentially as a result of their habitat profile and foraging strategies. Differences also exist in terms of dominance and aggression. Chimpanzees live in largely patriarchal societies with strong male–male bonds, whereas bonobos tend to be matriarchal with strong female–female bonds. These differences in communicative and social characteristics are thought to be linked to the ecology of the respective habitats of the two apes and their strategies for resource exploitation. In all likelihood, similarities in feeding ecology played a crucial role in selecting for the advanced cognitive abilities of both species—e.g., producing meaningful communicative signals, regulating competition and group cohesion, and making and utilizing tools to aid in foraging. Similarly, differences in their respective habitats may have led to selection for characteristics resulting in the behavioral differences observed today between the two species. Therefore, a clearer understanding of the similarities and differences between the two species most closely related to humans will provide valuable information into our own evolution by elucidating those characteristics shared among humans and our ape ancestors and those derived in the hominin lineage. (shrink)

One of the biggest problems in applications of animal welfare science is our ability to make comparisons between different individuals, particularly different species. Although welfare science provides methods for measuring the welfare of individual animals, there’s no established method for comparing measures between individuals. This problem occurs because of the underdetermination of the conclusions given the data, arising from two sources of variation that we cannot distinguish – variation in the underlying target variable (welfare experience) and in the (...) relationship of measured indicators to the target. In this paper I describe the similarity assumptions that underlie our current applications of interspecies comparisons and examine in which cases they are justified, as well as describing alternative methods we may use when they are not. In the end, all our available options for making interspecies comparisons are imperfect, and we need to make explicit context-specific decisions about which will be best for the task at hand while acknowledging their potential limitations. Future developments in our understanding of the biology of sentience will help strengthen our methods of making welfare comparisons. (shrink)

Cross-cultural comparisons can a) illuminate the manner in which cultures differentially highlight, ignore, and group various facets of emotional experience, and b) shed light on our evolved species-typical emotional architecture. In many societies, concern with shame is one of the principal factors regulating social behavior. Three studies conducted in Bengkulu and California explored the nature and experience of shame in two disparate cultures. Study 1, perceived term use frequency, indicated that shame is more prominent in Bengkulu, a collectivistic (...) culture, than in California, an individualistic culture. Study 2, comparing naturally occurring shame events with reports thereof, revealed that shame is associated with guilt-like accounts in California but not in Bengkulu, and subordinance events in Bengkulu but not in California; published reports suggest that the latter pattern is prominent worldwide. Study 3 mapped the semantic domain of shame using a synonym task; again, guilt was prominent in California, subordinance in Bengkulu. Because shame is overshadowed by guilt in individualistic cultures, and because these cultures downplay aversive emotions associated with subordinance, a fuller understanding of shame is best arrived at through the study of collectivistic cultures such as Bengkulu. After reviewing evolutionary theories on the origins and functions of shame, I evaluate these perspectives in light of facets of this emotion evident in Bengkulu and elsewhere. The available data are consistent with the proposition that shame evolved from a rank-related emotion and, while motivating prestige competition, cooperation, and conformity, nevertheless continues to play this role in contemporary humans. (shrink)

In this chapter, I argue that a certain kind of envy is not only morally permissible, but also, sometimes, more fitting and productive than admiration. Envy and admiration are part of our emotional palette, our toolbox of evolutionary adaptations, and they play complementary roles. I start by introducing my original taxonomy of envy, which allows me to present emulative envy, a species of envy sometimes confused with admiration. After reviewing how the two emotions differ from a psychological perspective, I (...) focus in particular on the distinct and complementary roles they play in the ethical and political domains. (shrink)

The complexity and variation of sound emission by members of the animal kingdom, primarily produced by the orders Passeriformes (songbirds), Cetacea (whales), but also reported in species belonging to the Exopterygota (insects) and Carnivora (mammals), has attracted human attention since the Middle Ages, where birds’ calls were used in compositions of that time. However, the focus of this paper will be on sound productions of birds and whales, as recent scientific and musicological research concentrates on these two animals.

Anthropocentric biases manifest themselves in two different ways in research on animal cognition. Some researchers claim that only humans have the capacity for reasoning, beliefs, and interests; and others attribute mental concepts to nonhuman animals on the basis of behavioral evidence, and they conceive of animal cognition in more or less human terms. Both approaches overlook the fact that language-use deeply informs mental states, such that comparing human mental states to the mental states of nonlinguistic animals is misguided. In order (...) to avoid both pitfalls -- assuming that animals have mental lives just like we do, or assuming that they have no mental lives at all -- I argue for a functional methodological approach. Researchers should study animal cognition by identifying environmental inputs, the functional role of internal states, and behavioral outputs. Doing so will allow for cross-species comparisons in a way that the use of folk psychological terms does not. (shrink)

We investigate a system of two species exploiting a common resource. We consider both abiotic (i.e. with a constant resource supply rate) and biotic (i.e. with resource reproduction and self-limitation) resources. We are interested in the asymmetric competition where a given consumer is the locally superior resource exploiter (LSE) and the other is the locally inferior resource exploiter (LIE). They also interact directly via interference competition in the sense that LIE individuals can use two opposite strategies to compete with (...) LSE individuals: we assume, in the first case, that LIE uses an avoiding strategy, i.e. LIE individuals go to a non-competition patch to avoids competition with LSE individuals, and in the second one, LIE uses an aggressive strategy, i.e. being very aggressive so that LSE individuals have to go to a non-competition patch. We further assume that there is no resource in the non-competition patch so that individuals have to come back to the competition patch for their maintenance, and the migration process acts on a fast time scale in comparison with demography and competition processes. The models show that being aggressive is efficient for LIE’s survival and even provoke global extinction of the LSE and this result does not depend on the nature of resource. (shrink)

Balāgha, which consists of three main branches today, has benefited from various channels in the process of completing its formation. Before the formation of systematic balāgha, it is assumed that there were two main currents, one represented by poets and lite-rati, and the other represented by scholars. This article aims to determine the place of Abū ʿUthmān al-Jāḥiẓ (255/869), one of the main names who wrote in the field of balāgha, in the pre-formation period of balāgha science. The documentary analysis (...) method will be used mainly in the research. The determinations of al-Jāḥiẓ on balāgha will be analysed in accord-ance with the parameters, categories and concepts of systematic balāgha. By examining al-Jāḥiẓ’s rhetorical understanding through the filter of systematic balāgha, the share of pre-for-mation period balāgha within systematic balāgha will be revealed. Another contribution of the study would be to reveal the balāgha understanding of al-Jāḥiẓ with its main frames. Ex-amining al-Jāḥiẓ’s concept of balāgha, on the other hand, will facilitate understanding of his unique concepts of balāgha and bayān. Because al-Jāḥiẓ designed a broad communication framework, which he calls bayān, and considered balāgha as a sub-category within this de-sign. Balāgha is the subject of verbal communication in this design.Summary: The formation of a discipline called balāgha passed through several stages. Balāgha as a term, which was in circulation as a qualification of beautiful and convincing words, has attracted the attention of some circles, had been dealt with it in various occasions and some thoughts had been recorded on the subject. These accumulations and records contained a number of basics and principles that formed the core of balāgha science which would later be systematized. Since these recorded cumulative basics and principles cannot be called balāgha science, it is possible to name them as the idea of balāgha. The independent works that emerged during this period were written by poets and literary writers. Religious scholars and linguists also had mentioned rhetorical issues in their works even though they did not write specific books on the topic. It is possible to say that there are two channels from which balāgha science is nourished: The literary criticism channel represented by poets and writers and the other channel which is held by various branches of science, the majority of which are religious sciences.The literary criticism channel is the product of some social and scientific developments in Arab history. When Jāhiliyya (pre-Islamic) poetry became a data source to serve the emerging grammar, an intensive movement of collecting Jāhiliyya poetry has begun. Compiled Jāhiliyya poetry was not only a source for linguists, but also a literary legacy that poets sang and used as a model for their new styles in poetry. Innovations in poetry led to a comparison between the old and the new, and these developments have also brought about the need for certain criteria to be used in literary criticism. Eventually, these critical activities circulated many terms, including the word balāgha.When it comes to religious sciences, balāgha has been a concept used mostly in iʿjāzu’l-Qurʿān issue. The discussions of the miraculous feature of the Qurʿān, which continued on theological grounds, must have aroused the desire to explain the eloquence of verses in concrete exam-ples. Because the scholars of these fields shifted their interest towards the use of linguistic tools. The balāgha channel shaped by the pressures of religious sciences such as kalām, fiqh and tafsīr could be called the balāgha developed by grammar; and the channel that began to take shape with the work of poets and writers can be called the balāgha developed by litera-ture.In the period after the formation of grammar and before the formation of balāgha, although there was not a balāgha science in the present-day sense, it is clear that there was a thought of balāgha. One of the scholars who reflects the idea of balāgha of the pre-establishment pe-riod is Abū ʿUthmān al-Jāḥiẓ. Al-Jāḥiẓ did not address the issue of persuasive and beautiful speech only in his book al-Bayān wa al-tabyīn. In various articles, he talks about the qualities of beautiful and impressive speeches, sometimes under different topics and sometimes under a special title. In his al-Bayān wa al-tabyīn, al-Jāḥiẓ establishes a communication theory called bayān that takes into account all the means of conveying meaning. He divides the means of communication into five, which are word, sign, number, text and posture. The book puts spe-cial emphasis on balāgha, which is one of the means of bayān, and its conditions of conveying meanings. Although the issues discussed in the work do not conform to the norms of the later systematic balāgha, it continues to be an important source in theoretical balāgha studies. Sys-tematic balāgha and al-Jāḥiẓ’s bayān project are different in terms of frame, but they have overlapping points and a piece-whole relationship between them. Bayān, developed by al-Jāḥiẓ’s, addresses the wide range of communication that takes into account including the ges-tures and signs; while balāgha is used to refer to the verbal communications only, which is part of the broader field of communication.In systematic balāgha, it is important to distinguish between balāgha and faṣāḥa terms; the former used to signify the word, the speech and the speaker, and the latter to signify only the word and the speaker. We have noticed that al-Jāḥiẓ uses them interchangeably. Nonetheless, the emphasis on the factor of transmitting messages, when he talks about the clarity of mean-ing on several occasions, shows that he considers the combined words rather than the indi-vidual words, which is the same assertion of systematic balāgha. According to him, the fact that a misarranged sentence is understood by the interlocutor should not mean that the sen-tence itself is capable of transmitting the meaning.The context factor, which is the determinant of systematic balāgha, is also taken into consid-eration in al-Jāḥiẓ’s understanding of balāgha. However, al-Jāḥiẓ generally considered the context together with the length and shortness of the speeches and did not mention the as-pects reflected in the sentence sequence. Although the major concern of al-Jāḥiẓ was the transmission ability of the speech, he also dealt with the expression forms. There are some other terms that he used less frequently like ījāz, iṭnāb, ishāb and kināya. Although some of these words are used in contexts similar to the meanings of today's term, most of them are used in such a context to meet more than one meaning. Ījāz, which is one of these concepts, is the name of expressing the meanings with little word in al-Jāḥiẓ’s usage. The use of terms reflects the types of narrative and figurative usages could not reach a stable point in al-Bayān wa al-tabyīn, because it was not written for the purpose of systematically analysing them. The author, who aims to examine the persuasive and beautiful words in many dimensions, under-took the issue with a view that takes into consideration the orator, and this caused his work to be designed in a way that serves speech making rather than analysing. This consideration prevented the emergence of an analysis system. Al-Jāḥiẓ mostly used balāgha in the context of oral performance. According to him, the written texts and performed sermons are different in style and therefore the balāgha criteria of these two species should be different as well. (shrink)

The present study assesses imitative ability in chimpanzees and human children. A direct comparison of these two species was conducted in an object-manipulation task. The subjects were required to copy the model stack by stacking colored blocks in the same order as the model. Four juvenile/adolescent chimpanzees failed to copy the model stack even after a long training-period. Two adult chimpanzees eventually learned to copy the model stack of two blocks. However, they failed to copy the model of three (...) blocks, and analysis of their stacking patterns revealed that they only focused on the color of the top block in the model. Human children started to copy the model of two blocks when they were two years of age and gradually increased the number of successfully copied blocks. The results from both chimpanzees and humans are discussed in terms of the social intelligence involved in object manipulation. (shrink)

The present study assesses imitative ability in chimpanzees and human children. A direct comparison of these two species was conducted in an object-manipulation task. The subjects were required to copy the model stack by stacking colored blocks in the same order as the model. Four juvenile/adolescent chimpanzees failed to copy the model stack even after a long training-period. Two adult chimpanzees eventually learned to copy the model stack of two blocks. However, they failed to copy the model of three (...) blocks, and analysis of their stacking patterns revealed that they only focused on the color of the top block in the model. Human children started to copy the model of two blocks when they were two years of age and gradually increased the number of successfully copied blocks. The results from both chimpanzees and humans are discussed in terms of the social intelligence involved in object manipulation. (shrink)

The presence of general intelligence poses a major evolutionary puzzle, which has led to increased interest in its presence in nonhuman animals. The aim of this review is to critically evaluate this question and to explore the implications for current theories about the evolution of cognition. We first review domain-general and domain-specific accounts of human cognition in order to situate attempts to identify general intelligence in nonhuman animals. Recent studies are consistent with the presence of general intelligence in mammals (rodents (...) and primates). However, the interpretation of a psychometricgfactor as general intelligence needs to be validated, in particular in primates, and we propose a range of such tests. We then evaluate the implications of general intelligence in nonhuman animals for current theories about its evolution and find support for the cultural intelligence approach, which stresses the critical importance of social inputs during the ontogenetic construction of survival-relevant skills. The presence of general intelligence in nonhumans implies that modular abilities can arise in two ways, primarily through automatic development with fixed content and secondarily through learning and automatization with more variable content. The currently best-supported model, for humans and nonhuman vertebrates alike, thus construes the mind as a mix of skills based on primary and secondary modules. The relative importance of these two components is expected to vary widely among species, and we formulate tests to quantify their strength. (shrink)

We investigate a system of two species exploiting a common resource. We consider both abiotic and biotic resources. We are interested in the asymmetric competition where a given consumer is the locally superior resource exploiter and the other is the locally inferior resource exploiter. They also interact directly via interference competition in the sense that LIE individuals can use two opposite strategies to compete with LSE individuals: we assume, in the first case, that LIE uses an avoiding strategy, i.e. (...) LIE individuals go to a non-competition patch to avoids competition with LSE individuals, and in the second one, LIE uses an aggressive strategy, i.e. being very aggressive so that LSE individuals have to go to a non-competition patch. We further assume that there is no resource in the non-competition patch so that individuals have to come back to the competition patch for their maintenance, and the migration process acts on a fast time scale in comparison with demography and competition processes. The models show that being aggressive is efficient for LIE’s survival and even provoke global extinction of the LSE and this result does not depend on the nature of resource. (shrink)

It is common to criticize a debate by alleging that it is a “merely verbal dispute.” But how conclusive would an argument based on such allegations be? This article takes the material‐composition debate as a case study and argues that the merely verbal dispute objection is less decisive than one might expect. While assessing the dialectical effectiveness of the mere‐verbality move, the article also tries to mark some progress in the philosophical understanding and appreciation of the phenomenon itself of merely (...) verbal disputes. Its contribution consists in shedding light on a distinction between the “faultlessness” and “faultiness” of a merely verbal dispute. (shrink)

Two major clarifications have greatly abetted the understanding and fruitful expansion of the theory of natural selection in recent years: the acknowledgment that interactors, not replicators, constitute the causal unit of selection; and the recognition that interactors are Darwinian individuals, and that such individuals exist with potency at several levels of organization (genes, organisms, demes, and species in particular), thus engendering a rich hierarchical theory of selection in contrast with Darwin’s own emphasis on the organismic level. But a piece (...) of the argument has been missing, and individuals at levels distinct from organisms have been denied potency (although granted existence within the undeniable logic of the theory), because they do not achieve individuality with the same devices used by organisms and therefore seem weak by comparison. We show here that different features define Darwinian individuality across scales of size and time. In particular, species-individuals may develop few emergent features as direct adaptations. The interactor approach works with emergent fitnesses, not with emergent features; and species, as a consequence of their different mechanism for achieving individuality (reproductive exclusivity among subparts, that is, among organisms), express many effects from other levels. Organisms, by contrast, suppress upwardly cascading effects, because the organismic style of individuality (by functional integration of subparts) does not permit much competition or differential reproduction of parts from within. Species do not suppress the operation of lower levels; such effects therefore become available as exaptations conferring emergent fitness—a primary source of the different strength that species achieve as effective Darwinian individuals in evolution. (shrink)

In this article we explore the different trajectories of this one drug, phenylbutazone, across two species, humans and horses in the period 1950–2000. The essay begins by following the introduction of the drug into human medicine in the early 1950s. It promised to be a less costly alternative to cortisone, one of the “wonder drugs” of the era, in the treatment of rheumatic conditions. Both drugs appeared to offer symptomatic relief rather than a cure, and did so with the (...) risk of side effects, which with phenylbutazone were potentially so severe that it was eventually banned from human use, for all but a few diseases, in the early 1980s. Phenylbutazone had been used with other animals for many years without the same issues, but in the 1980s its uses in veterinary medicine, especially in horses, came under increased scrutiny, but for quite different reasons. The focus was primarily the equity, economics, and ethics of competition in equine sports, with differences in cross-species biology and medicine playing a secondary role. The story of phenylbutazone, a single drug, shows how the different biologies and social roles of its human/animal subjects resulted in very different and changing uses. While the drug had a seemingly common impact on pain and inflammation, there were inter-species differences in the drug’s metabolism, the conditions treated, dosages, and, crucially, in intended clinical outcomes and perceptions of its benefits and risks. (shrink)

Beyond modularityattempts a synthesis of Fodor's anticonstructivist nativism and Piaget's antinativist constructivism. Contra Fodor, I argue that: (1) the study of cognitive development is essential to cognitive science, (2) the module/central processing dichotomy is too rigid, and (3) the mind does not begin with prespecified modules; rather, development involves a gradual process of “modularization.” Contra Piaget, I argue that: (1) development rarely involves stagelike domain-general change and (2) domainspecific predispositions give development a small but significant kickstart by focusing the infant's (...) attention on proprietary inputs. Development does not stop at efficient learning. A fundamental aspect of human development (“representational redescription”) is the hypothesized process by which information that isina cognitive system becomes progressively explicit knowledgetothat system. Development thus involves two complementary processes of progressive modularization and progressive “explicitation.” Empirical findings on the child as linguist, physicist, mathematician, psychologist, and notator are discussed in support of the theoretical framework. Each chapter concentrates first on the initial state of the infant mind/brain and on subsequent domain-specific learning in infancy and early childhood. It then goes on to explore data on older children's problem solving and theory building, with particular focus on evolving cognitive flexibility. Emphasis is placed throughout on the status of representations underlying different capacities and on the multiple levels at which knowledge is stored and accessible. Finally, consideration is given to the need for more formal developmental models, and a comparison is made between representational redescription and connectionist simulations of development. In conclusion, I consider what is special about human cognition by speculating on the status of representations underlying the structure of behavior in other species. (shrink)

The study area was a small lowland river valley (the Łęg river) located in the south-east of Poland. The object of investigation was the macrophytes of 10 river lakes with corresponding active river channel stretches of the same length as the cut-offs. The aim was to check the difference in species diversity between cut-off and active river channels. The second aim was to test the following hypothesis: vegetation of river lake has been shaped under the influence of contiguous river (...) stretch which has left a measurable mark in species abundance and composition. To test this, we checked whether a cut-off channel’s flora is more similar to flora of the contiguous river stretch, than to flora of a farther river stretch. During the course of the study it was found that the average species richness was approximately two times higher in the cut-off channels than in the river stretches. The number of the species exclusive for the river lakes was nine times higher in comparison with the river’s exclusives (not found in the cut-offs). The Shannon diversity index definitely spoke in favor of the river lakes. These results clearly show the significance of river lakes in maintaining biodiversity of aquatic ecosystems in a small river valley. We did not confirm our hypothesis concerning floristic relation between an active channel and its cut-offs. The floristic similarity between a given cut-off channel and the contiguous active river channel stretch is not stronger than the similarity between this lake and more distant river stretches. The cause of such a state of affairs may be high natural dynamics of investigated habitats and anthropogenic transformation of the river valley. (shrink)

At the dawn of the Upper Palaeolithic era around 45,000 BP, Homo sapiens migrated into Europe. This process was accompanied by the extinction of Neanderthals, which has led many to believe that this species was cognitively and behaviorally inferior to anatomically modern humans. In recent years, however, this view has been challenged. This paper focuses on art and aesthetic practices among Neanderthals, as one of the exponents of modernity. It explores to what extent central cognitivist accounts of differences with (...) Homo sapiens are supported by both theoretical arguments and empirical evidence. The commonly cited cognitive capacity for symbolism may be less crucial for art than hitherto assumed, and several other variables, such as demography and ecology, adapt the mainstream idea that the crucial difference between Neanderthals and anatomically modern humans is of a cognitive nature. As such, Neanderthals may have been artists as well, challenging longstanding ideas about the uniqueness of our species. (shrink)

How should we determine the distribution of psychological traits—such as Theory of Mind, episodic memory, and metacognition—throughout the Animal kingdom? Researchers have long worried about the distorting effects of anthropomorphic bias on this comparative project. A purported corrective against this bias was offered as a cornerstone of comparative psychology by C. Lloyd Morgan in his famous “Canon”. Also dangerous, however, is a distinct bias that loads the deck against animal mentality: our tendency to tie the competence criteria for cognitive capacities (...) to an exaggerated sense of typical human performance. I dub this error “anthropofabulation”, since it combines anthropocentrism with confabulation about our own prowess. Anthropofabulation has long distorted the debate about animal minds, but it is a bias that has been little discussed and against which the Canon provides no protection. Luckily, there is a venerable corrective against anthropofabulation: a principle offered long ago by David Hume, which I call “Hume’s Dictum”. In this paper, I argue that Hume’s Dictum deserves a privileged place next to Morgan’s Canon in the methodology of comparative psychology, illustrating my point through a discussion of the debate over Theory of Mind in nonhuman animals. (shrink)

The perception of semantic similarity derives from distinct processes of comparison and integration. A dual process model of conceptual combination claims that attributive combination (e.g., umbrella tree) entails comparison, while relational combination (e.g., pancake spatula) requires integration. The present research uses similarity as a test of this dual process model. Participants (N = 168) were presented attributive and relational conceptual combinations. Half of the participants interpreted the combinations before rating the similarity of their constituent concepts, while the other half provided (...) similarity ratings without interpreting the concepts together. The experiment revealed that attributive combination decreased the perceived similarity of the constituent concepts, whereas relational combination increased the similarity of the constituents. This result indicates that attributive and relational combination occur via distinct processes. Results of a post‐test (N = 60) suggested that these effects were specific to the particular concepts compared or integrated, and do not generalize to other concepts not compared or integrated. The present research thus supported a dual process model of conceptual combination by demonstrating differential effects of comparison and integration on the perception of semantic similarity. (shrink)

The charge that anthropomorphizing nonhuman animals is a fallacy is itself largely misguided and mythic. Anthropomorphism in the study of animal behavior is placed in its original, theological context. Having set the historical stage, I then discuss its relationship to a number of other, related issues: the role of anecdotal evidence, the taxonomy of related anthropomorphic claims, its relationship to the attribution of psychological states in general, and the nature of the charge of anthropomorphism as a categorical claim. I then (...) argue that the categorical reading of anthropomorphism cannot work and that it misrepresents what is being claimed when one claims that traits are shared between humans and nonhumans. We should think of such claims not as anthropomorphic per se– because that implies the trait is intrinsically human and only derivatively nonhuman. Instead, traits shared with mammals are mammalomorphic, for example, or primatomorphic when shared by primates. (shrink)

Chapter 20 of Plotinus’ treatise VI, 2 [43] has received particular attention because it seems to deal with the Intellect. However, the connection of this chapter with chapter 19 is problematic insofar as the latter deals with the ways in which species are generated by the first genera. Our aim will be to show that chapter 20 can only be understood in the light of the notion of genus. More precisely, Plotinus’ aim in this chapter is to demonstrate the (...) priority of the genus over its species by means of the theory of double activity. In order to demonstrate this point, the notion of Intellect is introduced by Plotinus as a model (παράδειγμα) to conceive this priority. We will study successively these two chapters to justify this point, insisting on the link between them as well as on the reinterpretation of some key Aristotelian concepts. This study also shows that the use of the comparison with science allows Plotinus to justify the primacy of the intelligible totalities that are the Soul and the Intellect as well as the generation of their respective parts, the particular souls and the particular intellects. (shrink)

The article proposes a comparison between Althusser and Derrida on the question of temporality through the two Marx's reading sub specie theatri set by the two authors in Pour Marx and in Spectres de Marx. From this comparison emerges that the althusserian theory of temporality is beyond the teleology of the hegelo-marxist tradition, but also of the messianism without messiah that is at the core of the Derrida's interpretation of Marx strongly influenced by Benjamin. In this sense, in a provocative (...) way, it can be said that in Althusser the escatology is à la cantonade.O autor propõe um confronto entre Althusser e Derrida acerca da questão da temporalidade, focalizando a leitura que os dois autores fazem de Marx sub specie theatri. A partir desse confronto, emerge uma teoria da temporalidade althusseriana, a qual se encontra para além, quer da teleologia da tradição hegeliano-marxista, quer do messianismo sem Messias proposto por Derrida, em sua releitura benjaminiana de Marx. Nesse sentido, a escatologia em Althusser é pensável somente à la cantonade. (shrink)

Summary: The article explores deployment of the Darwinian narrative of the “natural history of humanity” in Russian physical anthropology in the late nineteenth to the early twentieth century. It traces two narratives developed by the leading Russian school of physical anthropology: one narrative advanced a universalist vision of collective scholarly enterprise working toward clarifying the missing links in the a priori accepted developmental evolutionary model. The other constructed a new language that undermined the idea of species/subspecies/races/nations/ as stable, externally (...) bounded, and internally homogeneous units and attempted to rationalize imperial hybridity. The article's main focus is on the latter classificatory narrative, its relational methodology, and the protostructuralist units of comparison that it produced. (shrink)

This is a wide ranging and deeply learned examination of evolutionary developmental biology, and the foundations of life from the perspective of information theory. Hermeneutics was a method developed in the humanities to achieve understanding, in a given context, of texts, history, and artwork. In Readers of the Book of Life, the author shows that living beings are also hermeneutical interpreters of genetics texts saved in DNA; an interpretation based on the past experience of the cell (cell lineage, species), (...) confronted with and incorporating present environmental clues. This approach stresses the history, not only of the digital record saved in the DNA, but also of the flesh - the cellular organization which has a direct time-continuity with the very origins of life. This book is aimed at reconciling two opposite approaches to life. The first strictly sticking to a belief that all phenomena observed in the realm of the living can be explained from laws of physics. The opposite stressing the importance of features characteristic for a given level of description. To bring both views into a common understanding, the first part gives a comparison of the two problem solving strategies. The second part surveys the development of 20th century biology, bringing to light branches that never became part of the research mainstream. The third section of the book reviews a large body of recent evidence that can be interpreted in favor of the hermeneutic arguments. (shrink)

Proponents of permitting living kidney sales often argue as follows. Many jobs involve significant risks; people are and should be free to take these risks in exchange for money; the risks involved in giving up a kidney are no greater than the risks involved in acceptable hazardous jobs; so people should be free to give up a kidney for money, too. This paper examines this frequently invoked but rarely analysed analogy. Two objections are raised. First, it is far from clear (...) that kidney sales and dangerous jobs involve comparable risks on an appropriately broad comparison. Second, and more importantly, even if they do involve comparable risks it does not follow that kidney sales must be permitted because dangerous jobs are. The analogy assumes that kidney sales are banned for paternalistic reasons. But there may be other, non-paternalistic reasons for the ban. And paternalists, too, can consistently defend the ban even if kidney sales are no riskier than occupations that they find acceptable. Soft paternalists may want to protect would-be vendors from harms that they have not voluntarily chosen. Egalitarian hard paternalists may want to protect already badly off vendors from further worsening their situation. For neither species of paternalist is the size of the risk prevented decisive. I conclude that the analogy with dangerous jobs, while rhetorically powerful, pulls little real argumentative weight. Future debates on living kidney sales should therefore proceed without it. (shrink)

An argument is made that only through a detailed comparison of mutational mechanisms underlying the evolution of the genetic systems governing development, can the 'logic' of individual development be fully comprehended. To do this, it is essential to choose two or more genes (or their products) that interact in the establishment of a given function, and to compare the molecular basis of that interaction in closely related species. The rationale to this approach arises from observations of molecular co‐evolution between (...) interacting partners involved with given functions which have led to species specificity in the manner in which such functions are effected. Molecular coevolution reveals that divergence in sequence can be tolerated whilst biological functions are maintained, not because it is neutral and dispensable but because successful, compensatory changes can evolve in eukaryotic genomes that are in continuous states of flux. (shrink)

A sex difference in the tendency to outbreed (female exogamy) is a premise for the target article's proposed framework, which receives some support by being shared with chimpanzees but not with more distantly related primates. Further empirical support is provided, and it is suggested that recognition of sex differences might improve effective fairness, taking sexual assault as a case in point.

Mental and behavioral disorders represent a significant portion of the public health burden in all countries. The human cost of these disorders is immense, yet treatment options for sufferers are currently limited, with many patients failing to respond sufficiently to available interventions and drugs. High quality ontologies facilitate data aggregation and comparison across different disciplines, and may therefore speed up the translation of primary research into novel therapeutics. Realism-based ontologies describe entities in reality and the relationships between them in such (...) a way that – once formulated in a suitable formal language – the ontologies can be used for sophisticated automated reasoning applications. Reference ontologies can be applied across different contexts in which different, and often mutually incompatible, domain-specific vocabularies have traditionally been used. In this contribution we describe the Mental Functioning Ontology (MF) and Mental Disease Ontology (MD), two realism-based ontologies currently under development for the description of humanmental functioning and disease. We describe the structure and upper levels of the ontologies and preliminary application scenarios, and identify some open questions. (shrink)

The question of whether or not to partition data for the purposes of inferring phylogenetic hypotheses remains controversial. Opinions have been especially divided since Kluge's (1989, Systematic Zoology 38, 7–25) claim that data partitioning violates the requirement of total evidence (RTE). Unfortunately, advocacy for or against the RTE has not been based on accurate portrayals of the requirement. The RTE is a basic maxim for non-deductive inference, stipulating that evidence must be considered if it has relevance to an inference. Evidence (...) is relevant if it has a positive or negative effect on a given conclusion. In the case of ℈partitioned’ phylogenetic inferences, the RTE is violated, and the basis for rational belief in any conclusion is compromised, unless it is shown that the partitions are evidentially irrelevant to one another. The goal of phylogenetic systematics is to hypothesize past causal conditions to account for observed shared similarities among two or more species. Such inferences are non-deductive, necessitating consideration of the RTE. Some phylogeneticists claim the parsimony criterion as justification for the RTE. There is no relation between the two – parsimony is a relation between a hypothesis and causal question(s). Parsimony does not dictate the content of premises prior to an inference. ℈Taxonomic congruence,’ ℈supertrees,’ and ℈conditional combination’ methods violate the RTE. Taxonomic congruence and supertree methods also fail to achieve the intended goal of phylogenetic inference, such that ℈consensus trees’ and ℈supertrees’ lack an empirical basis. ℈Conditional combination’ is problematic because hypotheses derived from partitioned data cannot be compared – a causal hypothesis inferred to account for a set of effects only has relevance to those effects, not any comparative relevance to other causal hypotheses. A similar problem arises in the comparisons of hypotheses derived from different causal theories. (shrink)

In a suggestive reading of Descartes’ The Passions of the Soul, Luce Irigaray explores the possibility that the passion of wonder, the first of all the passions, can provide the basis for an ethics of sexual difference. Wonder is the first of all passions because it has no opposite, is prior to judgment and comparison, and because it is united to most other passions. Wonder is surprise at the extraordinary, and Irigaray believes it is the ideal way for women and (...) men to regard each other, as it is prior to judgement, and thus free of hierarchical relations, contrary to traditional ethics. In this sense, it leaves us open to new experiences and the distinctiveness of the other. For Descartes, a different passion, the passion of generosity, gives the key to ethics. Generosity is a species of wonder combined with love, which he understands as proper self-esteem. This proper self-esteem ensures that we have appropriate esteem for others by recognising them as like ourselves in the most important respects – the capacity to exercise free will and the resolve to use it well. He believes that if we value ourselves appropriately, then we will respond to others appropriately. This passion must be cultivated as a habit and virtue. In this paper, I examine how wonder and generosity can be linked to ethics, the relationship between these two passions, and Iris Marion Young’s view that Irigaray’s understanding of wonder can easily be extended to any structured social difference, such as race, class and religion by adopting a stance of ‘moral humility’ and accepting that our relations with others are asymmetrically reciprocal. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:The Human Genome ProjectSharon J. Durfy (bio) and Amy E. Grotevant (bio)In recent years, scientists throughout the world have embarked upon a long-term biological investigation that promises to revolutionize the decisions people make about their lives and lifestyles, the way doctors practice medicine, how scientists study biology, and the way we think of ourselves as individuals and as a species. It is called the Human Genome Project, and (...) its ultimate goal is to map and determine the chemical sequence of the three billion nucleotide base pairs that comprise the human genome. The feat is expected to take about fifteen years (see General Surveys).These three billion base pairs include an estimated 50,000 to 100,000 genes. The rest of the genome—perhaps 95 percent of it—is nongenic sequences with unknown function, sometimes called "junk." Determining the order and organization of all this material has been likened to tearing six volumes of the Encyclopaedia Brittanica into pieces, then trying to put it all back together to read the information (Surveys: Hall 1990). The effort could be well worth it, many scientists say, because it is expected to yield major insights into many common and complex diseases, including cancer, cardiovascular disease, and Alzheimer's disease (Debate: Dulbecco 1986; Koshland 1989).The Human Genome Project is not without controversy, however (Debate: Davis 1990; Leder 1990; Rechsteiner 1990). Many scientists fear that funding for it will be diverted from other areas of research, rather than obtained from new funding sources. This has enlivened the debate about the relative value of "big" versus "small" science. Also, the value of undertaking a complete sequencing of the genome has been questioned, especially given the high proportion of non-genic sequences.Advocates of the effort converted many critics by making two alterations in the original plan. Plans were included to simultaneously determine the nucleotide sequence of the genomes of other organisms; this provides comparisons and points of reference for the human sequence (U.S.: NIH/DOE 1990). Second, in response to concerns about the high cost of developing technology to sequence the whole [End Page 347] genome, the focus moved from large-scale sequencing to mapping the genome, which would hasten the search for disease genes (U.S.: NIH/DOE 1990).The ideal map would be both genetic, locating DNA markers, or signposts, at closely spaced intervals along the chromosomes, and physical, indicating the exact distance between these markers (Map: McKusick 1991). Since 1973, Human Gene Mapping workshops (HGM) have been held at least every two years to locate, compare, and compile genetic markers. This information is published and is accessible through Genome Database at Johns Hopkins University (McKusick 1991). The most recent Human Genome Mapping workshop was held in August 1991, at which the Human Genome Organization (HUGO) began to assume increased responsibility for coordination of the international mapping effort (Surveys: Maddox 1991).Historical Background of the United States EffortThe first serious discussions about sequencing the entire human genome occurred at a workshop at the University of California at Santa Cruz in 1985 (U.S.: Sinsheimer 1989). A second workshop, organized by the U.S. Department of Energy (DOE) and held in March 1986, addressed the feasibility of an organized program (U.S.: DOE 1986). Shortly thereafter, DOE instituted its own genome project (U.S.: DOE 1987). Reports in early 1988 from both the National Research Council (NRC) of the National Academy of Sciences (NAS) and Congress' Office of Technology Assessment (OTA) (U.S.: NRC 1988; OTA 1988) served as catalysts, and in fiscal year 1988, the U.S. Congress officially launched the Human Genome Project by appropriating funds to both the Department of Energy and the National Institutes of Health (NIH).To avoid potential congressional "meddling" (U.S.: Roberts 1988), NIH and DOE drafted a memorandum of understanding for interagency coordination in October 1988 (U.S.: NIH/DOE 1990). The agencies then created both separate and joint committees, and working groups to administer the project. NIH established the Office of Human Genome Research in 1988 (directed by James D. Watson) to plan and coordinate NIH genome activities. That office has evolved into the National Center for Human Genome Research (NCHGR... (shrink)

This study explored the furry identity. Furries are humans interested in anthropomorphic art and cartoons. Some furries have zoomorphic tendencies. Furries often identify with, and/or assume, characteristics of a special/totem species of nonhuman animal. This research surveyed both furries and non-furry individuals attending a furry convention and a comparison group of college students . Furries commonly indicated dragons and various canine and feline species as their alternate-species identity; none reported a nonhuman-primate identity. Dichotomous responses to two key (...) furry-identity questions produced a two-by-two furry typology. These two independent dimensions are self-perception and species identity . One-quarter of the furry sample answered “yes” to both questions, placing them in the “Distorted Unattained” quadrant. This type of furry has certain characteristics paralleling gender-identity disorder. To explore this parallel, the furry typology, and the proposed construct of “Species Identity Disorder” needs further research. (shrink)

Earth’s Insights is about more than indigenous North American environmental attitudes and values. The conclusions of Hester, McPherson, Booth, and Cheney about universal indigenous environmental attitudes and values, although pronounced with papal infallibility, are based on no evidence. The unstated authority of their pronouncements seems to be the indigenous identity of two of the authors. Two other self-identified indigenous authors, V. F. Cordova and Sandy Marie Anglás Grande, argue explicitly that indigenous identity is sufficient authority for declaring what pre-Columbian indigenous (...) environmental attitudes and values were. Exclusive knowledge claims based on essentialist racial-cultural identity, though politically motivated, are politically risky. They may inadvertently legitimate more noxious and dangerous racial-cultural identity politics and exclusion of those who identify themselves (or are identified by others) in oppositional racialcultural terms from full and equal participation in the political and economic arenas of the prevailing culture. Biologically, racial differences are entirely superficial; Homo sapiens is a single, homogeneous species. Contrary to Hester et al., ethnic conflict was common among pre-Columbian indigenous North American peoples. Other indigenous authors, among them McPherson, have found my comparison of pre-Columbian indigenous North American attitudes and values with the Aldo Leopold land ethic to be illuminating. I wish I had not said that pre-Columbian indigenous North American attitudes and values are “validated” by ecology, but rather that they and ecology are “mutually validating.”. (shrink)

This article attempts a new interpretation of Lao Tzu's metaphysics of Tao by employing a combined method of linguistic and philosophical analyses. This new methodological approach involves the following basic assumptions: (1) Lao Tzu's metaphysics of Tao can be characterized as a kind of non?dualistic and non?conceptual metaphysics sub specie aeternitatis; (2) Tao is not an entity, substance, God, Idee, or anything hypostatized or conceptualized, but is rather a metaphysical symbol unifying various dimensions of Nature as the totality of things?as?they?are; (...) (3) there is, generally speaking, no confusion or inconsistency of thought involved in the Lao?Tzu; (4) there are two kinds of speech used by Lao Tzu, viz. philosophical (real) speech and figurative (metaphorical) speech; and (5) figurative expressions, which predominate, can be reduced to philosophical expressions for the sake of the clarification of Lao Tzu's thought. In the light of these basic assumptions, a philosophical explication of Lao Tzu's conception of Tao is undertaken by exploring its six dimensions. They are: (i) Tao as Reality, (ii) Tao as Origin, (iii) Tao as Principle, (iv) Tao as Function, (v) Tao as Virtue, and (vi) Tao as Technique; and (ii)?(vi) can be subsumed under Tao as Manifestation (to us). These six dimensions are not ?categories? or ?attributes? in the Western (conceptual) sense, but are the inseparable aspects or perspectives of Tao reconstructed from the Lao?Tzu in order to show the best possible way of understanding Lao Tzu's metaphysical thinking. In the Epilogue, a brief comparison of Lao Tzu and Spinoza is made in order to emphasize the non?conceptual and non?propositional nature of Lao Tzu's metaphysical language. (shrink)

"The Natural System" is the name given to the underlying arrangement present in the diversity of life. Unlike a classification, which is made up of classes and members, a system or arrangement is an integrated whole made up of connected parts. In the pre-evolutionary period a variety of forms were proposed for the Natural System, including maps, circles, stars, and abstract multidimensional objects. The trees sketched by Darwin in the 1830s should probably be considered the first genuine evolutionary diagrams of (...) the Natural System—the first genuine evolutionary trees. Darwin refined his image of the Natural System in the well-known evolutionary tree published in the Origin of Species, where he also carefully distinguished between arrangements and classifications. Following the publication of the Origin, there was a great burst of evolutionary tree building, but interest in trees declined substantially after 1900, only to be revived in recent years with the development of cladistic analysis. ¶ While evolutionary trees are modern diagrams of the Natural System, they are at the same time instances of another broad class of diagrams that may be called "trees of history": branching diagrams of genealogical descent and change. During the same years that Darwin was sketching his first evolutionary trees, the earliest examples of two other trees of history also appeared: the first trees of language evolution and of manuscript genealogy. Though these were apparently independent of evolutionary trees in their origin, the similarities among all these trees of history, and among the historical processes that underlie them, were soon recognized. Darwin compared biological evolution and language evolution several times in the Origin of Species, and both Ernst Haeckel and the linguist August Schleicher made similar comparisons. Both linguists and stemmaticists (students of manuscript descent) understood the principle of apomorphy—the principle that only shared innovations provide evidence of common ancestry—more clearly than did systematists, and if there had been more cross-fertilization among these fields the cladistic revolution in systematics might well have taken place in the nineteenth century. ¶ Although historical linguists and stemmaticists have in some respects had sounder theory than have systematists, at least until recently, they have also had the practical problem of very large amounts of data, a problem not often faced by systematists until the advent of molecular sequencing. The opportunity now exists for systematists to contribute to the theory and practice of linguistics and stemmatics, their sister disciplines in historical reconstruction, through application of our commonly used computer programs for tree estimation. Preliminary results from the application of numerical cladistic analysis to a large stemmatic data set have been very encouraging, and have already generated much discussion in the stemmatics community. (shrink)

This study investigated how seventh-grade students rate their fear of, and disgust toward, amphibians in comparison to some other nonhuman animal species. For the purpose of evaluating these variables, a questionnaire with open-ended and self-report questions was used. The study found that direct experience of animals significantly affects students’ self-reported fear and disgust ratings. Boys generally reported less fear and disgust toward animals than girls. With regard to amphibians, students expressed relatively high disgust, but low fear. There were no (...) differences in disgust ratings between boys and girls. Also, a majority of students reported having no direct experience of amphibians, and their attitudes hovered between negative and neutral. Factor analysis placed amphibians in a category of disgust-relevant animals. The other two categories that emerged were interpreted as fear-relevant animals and companion animals. The study concluded that education should place greater importance on allowing students to experience a variety of different animal species directly in order to foster positive change in their feelings and attitudes toward them, and at the same time to build on their understanding of animals. (shrink)