Animal Cognition

L’étude scientifique du comportement animal s’est en partie développée en réaction à des excès « anthropomorphiques», où l’observateur projetait chez l’animal une forme de psychologie populaire. En conséquence, le langage théorique des représentations mentales a été largement proscrit de l’éthologie pendant une bonne partie du xxe siècle. Même si la méthodologie du behaviorisme – centrée sur l’observation et la mesure du comportement – constitue toujours la règle, l’avènement de la révolution cognitive, les études de terrain de longue durée sur des (...) populations animales dans leurs conditions naturelles, ainsi qu’un intérêt accru pour la cognition physique et sociale, ont replacé le cadre théorique des représentations mentales au premier plan. L’intérêt porté aux représentations mentales vient en partie de la capacité qu’ont certaines espèces à catégoriser, réaliser des inférences ou prendre des décisions flexibles qui vont au-delà du simple flux perceptif. Enfin, l’étude du rôle causal des modèles mentaux chez les animaux a été largement enrichie par des considérations écologiques et évolutives sur l’espèce animale en question. (shrink)

This article evaluates experiments seeking to teach human language to various non-human primates and birds, with a focus on the agency, self-expression and resistance to their own predicament that became apparent in the experimental subjects once communication was genuinely attempted with them, and the anthropocentric framing in which it was received and devalued in the general perception. -/- These experiments, the problematic assumptions behind them and the remarkable results deserve far more critical scientific and ethical analysis than they were given; (...) the full scope of what these animals proved capable of is still underestimated. (shrink)

This transdisciplinary anthology, a project of the "Chimaira - Working Group for Human-Animal Studies", is the first German-language publication to address the diverse questions surrounding animal agency and power. Human-Animal Studies are thus addressing a gap in previous research on the central concept of agency, which is on the agenda in a wide variety of disciplines. Controversial approaches beyond anthropocentrism, such as actor-network theory and new materialism, are explicitly focused on animal actors for the first time.

This paper interprets Ortega y Gasset’s Meditations on Hunting (1972) through the concept of cognitive scaffolding in order to analyse the relationship between hunter and hunting dog as a form of inter-species distributed cognitive system. In recreational hunting, the hunter and the dog engage in a reciprocal process of mutual cognitive scaffolding that transforms both their capacities. It is further argued that this scaffolding also serves as a means of affective regulation, and that it is the affective rather than the (...) cognitive features of the system that point to the function of the scaffolding. Namely, the production of an affective state in the hunter. We detail the ways in which the cognitive and affective features of the scaffold operate and interrelate. We then explore the role of the game-animal in the affective functioning of the scaffold and consider that the hunter-dog system might represent a harmful form of scaffolding. (shrink)

While it is philosophically contested whether nonlinguistic animals can have conceptual capabilities, it is also philosophically contested whether one can even empirically test for such capabilities. I draw from Sellars’ work on psychological nominalism to develop an empirically tractable means of distinguishing between tasks that require conceptual capabilities and those that do not. Tasks that require conceptual capabilities are those that require awareness of abstract relations, whereas tasks that can be solved merely through Sellarsian picturing do not. I argue that (...) relational matching-to-sample tasks cannot be solved through picturing and therefore require awareness of the abstract relations of same and different. Crows and amazons have both been able to succeed at relational matching-to-sample tasks; therefore, there are at least some nonlinguistic animals that have conceptual capabilities. Finally, I consider the objection that one cannot attribute conceptual capabilities without also attributing knowledge, and Sellarsian conditions for knowledge are beyond the capabilities of any nonlinguistic animal. In response, I argue that Sellarsian conditions for knowledge only require an implicit grasp of the is/looks distinction and empirical work with chimpanzees on their understanding of the appearance/reality distinction demonstrates that they can meet this standard. Therefore, language is not necessary for meeting Sellarsian conditions for knowledge. (shrink)

One of Clayton’s major contributions to our understanding of animal minds has been her work on episodic-like memory. A central reason for the success of this work was its focus on ecological validity: rather than looking for episodic memory for arbitrary stimuli in artificial contexts, focussing on contexts in which episodic memory would serve a biological function such as food caching. This review aims to deepen this insight by surveying the numerous functions that have been proposed for episodic memory, articulating (...) a philosophically grounded framework for understanding what exactly functions are, and drawing on these to make suggestions for future directions in the comparative cognitive psychology of episodic memory. Our review suggests four key insights. First, episodic memory may have more than one function and may have different functions in different species. Second, cross-disciplinary work is key to developing a functional account of episodic memory. Third, there is scope for further theoretical elaboration of proposals relating episodic memory to food caching and, in particular, future-oriented cognition. Finally, learning-related functions suggested by AI (artificial intelligence)-based models are a fruitful avenue for future behavioural research. (shrink)

A letter replying to Bayne et al. "Tests for consciousness in humans and beyond", 2024, arguing that the search for consciousness "beyond" healthy adult humans should begin with other animals.

Comparative cognitive science often involves asking questions like ‘Do nonhumans have C?’ where C is a capacity we take humans to have. These questions frequently generate unproductive disagreements, in which one party affirms and the other denies that nonhumans have the relevant capacity on the basis of the same evidence. I argue that these questions can be productively understood as questions about natural kinds: do nonhuman capacities fall into the same natural kinds as our own? Understanding such questions in this (...) way has several advantages: it preserves the intuition that these are substantive empirical questions worth asking; it helps us to understand why they so frequently give rise to disagreements of the kind described; and it provides clues about how to diagnose and resolve them. (shrink)

With an extensive amount of research on the social lives of primates, Frans de Waal has been a pioneering advocate for the continuity of human and non-human minds, putting forward the idea that these creatures exhibit rudimentary political and moral behaviors. One of the traits which de Waal focuses on is animal normativity, a set of behaviors functionally defined as adherence to social standards. Recently, some philosophers have endorsed this position, holding that animals show a psychological capacity called normative cognition (...) underlying those and other social behaviors. In this paper, I assess whether advocacy for animal normativity is an exercise of theory construction in comparative cognition. To that end, I present three features of this kind of theory construction. First, the explanatory goal of building functional analyses of cognitive capacities. Second, the conceptual aid of comparative thinking for theory construction. Third, the heuristic value of theory in specifying possible roads of inquiry. Taking these features into account, I assess whether the claims advocates make regarding animal normativity consider them. My answer is negative. First, since some advocates focus on behavioral traits and not on psychological capacities, they are not producing theory in comparative cognition, although, as I argue, they should. Second, there is a disregard for hypothesis testing and no evolutionary considerations to support their views. Finally, the claim that non-human animals exhibit normativity does not seem to have heuristic value. (shrink)

The distinction between personal and subpersonal levels of psychological explanation has proved useful in order to differentiate ways of understanding human behavior. Yet little has been discussed about how these kinds of explanations would work in making sense non-animals’ intelligent behavior. In this paper I assess the main characterizations of personal and subpersonal explanations and how they could be applied in interpreting animal behavior in a scientific setting. Specifically, my claim is that personal level explanation is especially relevant to explain (...) human actions as singular events. Through this, I will argue that instances of animal behavior can potentially be taken as singular events in the same way in which we take human action to be. Thus, personal level explanation plays an important role in behavioral sciences of non-human animals. -/- La distinción entre los niveles personal y subpersonal de explicación psicológica ha resultado de gran utilidad para diferenciar distintos modos de comprender el comportamiento humano. La discusión teórica en torno a la distinción se ha enfocado particularmente en torno a cómo caracterizar el nivel personal. Sin embargo, poco se ha dicho sobre cómo estas explicaciones operarían a la hora de hacer inteligible el comportamiento inteligente de animales no humanos. En este trabajo analizo las principales caracterizaciones que se han dado de las explicaciones de nivel personal y cómo éstas aplicarían a la interpretación del comportamiento animal en contextos científicos. Específicamente, defenderé que las explicaciones de nivel personal son especialmente relevantes para explicar las acciones humanas en tanto eventos singulares. A partir de esto, argumentaré que también los comportamientos animales pueden potencialmente ser eventos singulares como lo son las acciones humanas. Así, las explicaciones de nivel personal juegan un rol importante en las ciencias del comportamiento animal. (shrink)

There are two main approaches within classical cognitive science to explaining how humans can entertain mental states that integrate contents across domains. The language-based framework states that this ability arises from higher cognitive domain-specific systems that combine their outputs through the language faculty, whereas the language-independent framework holds that it comes from non-language-involving connections between such systems. This article turns on its head the most influential empirical argument for the language-based framework, an argument that originates from research on spatial reorientation. (...) I make the case that neuroscientific findings about spatial reorientation in rodents and humans bolster the language-independent framework instead. (shrink)

Recently, various philosophers and ethologists have argued or hypothesised that, in addition to humans, there are also non-human animals that are capable of following rules and implementing normative behaviours. The investigation of animal normativity until now, however, has been almost exclusively focused on mammals and, in particular, non-human primates and cetaceans. In contrast, this work aims to extend this research to the world of invertebrates and, more specifically, to the world of eusocial insects. For the purpose of investigating whether there (...) are clues of normativity in the world of eusocial insects, we will inquire into the question of whether certain behaviours of ants can be considered normatively conditioned behaviours. -/- . (shrink)

While growing empirical evidence suggests a continuity between human and non-human psychology, many philosophers still think that only humans can act and form beliefs rationally. In this paper, we challenge this claim. We first clarify the notion of rationality. We then focus on the rationality of beliefs and argue that, in the relevant sense, humans are not the only rational animals. We do so by first distinguishing between unreflective and reflective responsiveness to epistemic reasons in belief formation and revision. We (...) argue that unreflective responsiveness is clearly within the reach of many animals. We then defend that a key demonstration of reflective responsiveness would be the ability to respond to undermining defeaters. We end by presenting some empirical evidence that suggests that some animal species are capable of processing these defeaters, which would entail that even by the strictest standards, humans are not the only rational animals. (shrink)

Darwin’s theory is often illustrated with depictions of different finch beaks or with lined-up skeletons displaying subtle bone-structure changes throughout evolutionary history. In The Deep Histor...

Like many others, I see Crump et al. (2022) as a milestone for improving upon previous guidelines and for extending their framework to decapod crustaceans. Their proposal would benefit from a firm evolutionary foundation by adding the comparative measurement of life-history complexity as a ninth criterion for attributing sentience to nonhuman animals.

I try to identify elements of our mental capacities that separate us from animals. I focus on our command of logical concepts, demonstrable already in children in the second or third year of their life, which to date no animal has been shown to master. I draw various conclusions about the behavioural, intellectual, emotional, and moral capacities that depend on this mastery, and discuss recent empirical research that either supports or apparently disagrees with the claim that animals, even those we (...) consider intelligent, are limited in these respects. My discussion is built around observations extracted from Wittgenstein. (shrink)

In this book, the author investigates if animals have consciousness. Two salient issues covered in it are the nature of subjectivity and how a sense of self (and awareness of the other) evolves from its biological underpinnings.

Os debates sobre a existência da consciência em animais não humanos vêm ganhando cada vez mais destaque nos círculos científicos e filosóficos ao redor do mundo. Um importante empecilho que a área atualmente enfrenta diz respeito à construção de um método confiável capaz de identificar se um determinado animal não humano possui estados mentais conscientes. A literatura nomeia essa questão de “o problema da mensuração da consciência animal”. A presente dissertação possui como objetivo analisar e responder esse problema através da (...) combinação entre o uso de evidências empíricas e de ferramentas filosóficas. Dito isso, existem inúmeras formas de respondê-lo. Ao longo do texto, analisarei algumas das que são consideradas mais relevantes na discussão atual. Uma delas é a concepção cética de que não há questão de fato sobre os animais não humanos serem ou não conscientes. Em contraste, as abordagens neutras e newtonianas buscam se esquivar de compromissos metafísicos e teóricos para atribuir consciência aos animais. Ao final da dissertação defenderei a chamada “abordagem teórica leve”, posição originalmente proposta pelo filósofo Jonathan Birch. Buscarei mostrar que ela é atualmente a hipótese empiricamente mais adequada e filosoficamente plausível dentre as disponíveis na literatura. (shrink)

It is generally assumed that humans are the only animals who can possess a concept of death. However, the ubiquity of death in nature and the evolutionary advantages that would come with an understanding of death provide two prima facie reasons for doubting this assumption. In this paper, my intention is not to defend that animals of this or that nonhuman species possess a concept of death, but rather to examine how we could go about empirically determining whether animals can (...) have a concept of death. In order to answer this question, I begin by sketching an account of concept possession that favours intensional classification rather than mere extensional discrimination. Further, I argue that the concept of death should be construed as neither binary nor universal. I then present a proposal for a set of minimal conditions that must be met to have a concept of death. I argue that having a minimal understanding of death entails first expecting a dead individual to be alive, and then grasping its non-functionality and irreversibility. Lastly, I lay out the sort of observational and experimental evidence that we should look for to determine whether animals have the capacity for a minimal comprehension of death. (shrink)

The human relationship to nature is a deeply ambiguous one. Human animals are both a part of nature and distinct from it. They are part of nature in the sense that, like other forms of life, they were brought into existence by natural processes, and, like other forms of life, they are dependent on their environment for survival and success. Yet humans are also reflective animals with sophisticated cultural systems. Because of their immense power and their ability to wield it (...) intentionally, humans have duties and responsibilities that other animals do not. (shrink)

The indeterminacy problem is one of the most prominent objections against naturalistic theories of content. In this essay I present this difficulty and argue that extant accounts are unable to solve it. Then, I develop a particular version of teleosemantics, which I call ’explanation-based teleosemantics’, and show how this outstanding problem can be addressed within the framework of a powerful naturalistic theory.

Recently, psychological phenomena have been expanded to new domains, crisscrossing boundaries of organizational levels, with the emergence of areas such as social personality and ecosystem learning. In this contribution, we analyze the ascription of an individual-based concept (personality) to the social level. Although justified boundary crossings can boost new approaches and applications, the indiscriminate misuse of concepts refrains the growth of scientific areas. The concept of social personality is based mainly on the detection of repeated group differences across a population, (...) in a direct transposition of personality concepts from the individual to the social level. We show that this direct transposition is problematic for avowing the nonsensical ascription of personality even to simple electronic devices. To go beyond a metaphoric use of social personality, we apply the organizational approach to a review of social insect communication networks. Our conceptual analysis shows that socially self-organized systems, such as isolated ant trails and bee’s recruitment groups, are too simple to have social personality. The situation is more nuanced when measuring the collective choice between nest sites or foraging patches: some species show positive and negative feedbacks between two or more self-organized social structures so that these co-dependent structures are inter-related by second-order, social information systems, complying with a formal requirement for having social personality: the social closure of constraints. Other requirements include the decoupling between individual and social dynamics, and the self-regulation of collective decision processes. Social personality results to be sometimes a metaphorical transposition of a psychological concept to a social phenomenon. The application of this organizational approach to cases of learning ecosystems, or evolutionary learning, could help to ground theoretically the ascription of psychological properties to levels of analysis beyond the individual, up to meta-populations or ecological communities. (shrink)

We have structured our response according to five questions arising from the commentaries: (i) What is sentience? (ii) Is sentience a necessary or sufficient condition for moral standing? (iii) What methods should guide comparative cognitive research in general, and specifically in studying invertebrates? (iv) How should we balance scientific uncertainty and moral risk? (v) What practical strategies can help reduce biases and morally dismissive attitudes toward invertebrates?

Philosophical attention to animals can be found in a wide range of texts throughout the history of philosophy, including discussions of animal classification in Aristotle and Ibn Bâjja, of animal rationality in Porphyry, Chrysippus, Aquinas and Kant, of mental continuity and the nature of the mental in Dharmakīrti, Telesio, Conway, Descartes, Cavendish, and Voltaire, of animal self-consciousness in Ibn Sina, of understanding what others think and feel in Zhuangzi, of animal emotion in Śāntarakṣita and Bentham, and of human cultural uniqueness (...) in Xunzi. In recent years, there has been increased attention to animal minds in philosophical discussions across many areas of metaphysics, epistemology, and value theory. Given that nonhuman animals share some biological and psychological features with humans, and that we share community, land, and other resources, consideration of nonhuman animals has much to contribute to our philosophical activities. -/- Contemporary philosophy of animal minds often also engages with the sciences of animal cognition and behavior. The science of comparative cognition is a thriving area of research, complementing the philosophical study in two ways. For one, philosophers of animal cognition can use claims resulting from animal cognition studies as premises in philosophical discussions. For example, Jacob Beck (2012) relies on pigeons’ abilities to compare quantities to argue for nonconceptual content; Sidney Carls-Diamante (forthcoming) appeals to octopus behavior and physiology to defend embodied cognition; Richard Moore (2016a) refers to ape gestural communication to rethink the requirements for intentional communication; Andrew Barron and Colin Klein (2016) appeal to insect cognition research to defend new theories of consciousness; Sarah Vincent, Rebecca Ring, and Kristin Andrews (2019) cite dolphins’ social practices to argue for the existence of norms that do not require metacognition. -/- In addition, philosophers of animal cognition can examine the epistemology and methods used to justify the claims that arise from the science. Research into animal cognition has resulted in surprising claims about animal capacities, such as sociality in garter snakes (Skinner & Miller 2020), tool-use in ants (Maák et al. 2017), mirror self-recognition in fish (Kohda et al. 2019), empathy in rats (Bartal et al. 2011), social learning in fruit flies (Danchin et al. 2018), episodic memory in dogs (Fugazza et al. 2020), addition and subtraction in bees (Howard et al. 2019). How should we evaluate such claims? -/- Some philosophers have argued that animal cognition research is held to a higher standard than human cognition research, and that scientists working with animals are sometimes asked to solve skeptical problems (Halina 2015). Others have challenged scientific assumptions about the relationship between brain size and intelligence, as well as biases against invertebrates (Mikhalevich & Powell 2020). -/- Animal cognition research challenges philosophers to consider that many capacities and behaviors often assumed to require language, sophisticated technological capacities, or legal systems may in fact be had by other animals who lack these properties. In this way, animal cognition research often surprises us by showing that sophisticated-looking activity can be caused through rather simple mechanisms. -/- 1. What is Animal Cognition? 2. Philosophical Assumptions in the Study of Animal Cognition 2.1 Theory-ladenness 2.2 Value-ladenness 2.3 Objectivity 2.4 Simplicity 2.5 Summary 3. Animal Cognition Applied to Philosophy 3.1 The problem of other minds 3.2 The mind-body problem 3.3 Consciousness 3.4 Thought 3.5 Communication 3.6 Social understanding 3.7 The influence of animal cognition on value theory 3.7.1 Ethics 3.7.2 Political theory 3.8 Summary Bibliography Academic Tools Other Internet Resources Related Entries. (shrink)

Humans interact with animals in numerous ways and on numerous levels. We are indeed living in an “animal”s world,’ in the sense that our lives are very much intertwined with the lives of animals. This also means that animals, like those dogs we commonly refer to as our pets, are living in a “human’s world” in the sense that it is us, not them, who, to a large degree, define and manage the interactions we have with them. In this sense, (...) the human-animal relationship is nothing we should romanticize: it comes with clear power relations and thus with a set of responsibilities on the side of those who exercise this power. This holds, despite the fact that we like to think about our dogs as human’s best friend. Dogs have been part of human societies for longer than any other domestic species. Like no other species they exemplify the role of companion animals. Relationships with pet dogs are both very widespread and very intense, often leading to strong attachments between owners or caregivers and animals and to a treatment of these dogs as family members or even children. But how does this relationship look from the dogs’ perspective? How do they perceive the humans they engage with? What responsibilities and duties arise from the kind of mutual understanding, attachment, and the supposedly “special” bonds we form with them? Are there ethical implications, maybe even ethical implications beyond animal welfare? The past decades have seen an upsurge of research from comparative cognition on pet dogs’ cognitive and social skills, especially in comparison with and reference to humans. We will therefore set our discussion about the nature and ethical dimensions of the human–dog relationship against the background of the current empirical knowledge on dog (social) cognition. This allows us to analyze the human–dog relationship by applying an interdisciplinary approach that starts from the perspective of the dog to ultimately inform the perspective of humans. It is our aim to thereby identify ethical dimensions of the human–dog relationship that have been overlooked so far. (shrink)

—Commentary on Mikhalevich and Powell on invertebrate minds.— Whether or not arthropods are sentient, they can have moral standing. Appeals to sentience are not necessary and retard progress in human treatment of other species, including invertebrates. Other increasingly well-documented aspects of invertebrate minds are pertinent to their welfare. Even if arthropods are not sentient, they can be agents whose goals—and therefore interests—can be frustrated. This kind of agency is sufficient for moral status and requires that we consider their welfare.

The philosophy of animal minds addresses profound questions about the nature of mind and the relationships between humans and other animals. In this fully revised and updated introductory text, Kristin Andrews introduces and assesses the essential topics, problems, and debates as they cut across animal cognition and philosophy of mind, citing historical and cutting-edge empirical data and case studies throughout. The second edition includes a new chapter on animal culture. There are also new sections on the evolution of consciousness and (...) tool use in animals, as well as substantially revised sections on mental representation, belief, communication, theory of mind, animal ethics, and moral psychology. Further features such as chapter summaries, annotated further reading, and a glossary make The Animal Mind an indispensable introduction to those teaching philosophy of mind, philosophy of animal minds or animal cognition. It will also be an excellent resource for those in fields such as ethology, biology, and psychology. (shrink)

If a conclusion was reached that creatures without a language capability exhibit some form of a capability for logic, this would shed a new light on the relationship between logic, language, and thought. Recent experimental attempts to test whether some animals, as well as pre-linguistic human infants, are capable of exclusionary reasoning are taken to support exactly that conclusion. The paper discusses the analyses and conclusions of two such studies: Call’s (2004) two cups task, and Mody and Carey’s (2016) four (...) cups task. My paper exposes hidden assumptions within these analyses, which enable the authors to settle on the explanation which assigns logical capabilities to the participants of the studies, as opposed to the explanations which do not. The paper then demonstrates that the competing explanations of the experimental results are theoretically underdeveloped, rendering them unclear in their predictions concerning the behavior of cognitive subjects, and thus difficult to distinguish by use of experiments. Additionally, it is questioned whether the explanations are rivals at all, i.e. whether they compete to explain the cognitive processes of the same level. The contribution of the paper is conceptual. Its aim is to clear up the concepts involved in these analyses, in order to avoid oversimplified or premature conclusions about the cognitive abilities of pre- and non-linguistic creatures. It is also meant to show that the theoretical space surrounding the issues involved might be much more diverse and unknown than many of these studies imply. (shrink)

Kant holds that “on the basis of their actions” we can infer that “animals act in accordance with representations” (Critique of the Power of Judgment, 5: 464, fn.). Animals, like humans, have the powers of sensibility, imagination and choice, but lack the human powers of understanding, reason and free choice. They also lack first-person representation, consciousness, concepts and inner sense. Nevertheless, animals have an analog of reason that involves connections of representations that explain their behavior. Kant cannot call such connections (...) beliefs because he identifies beliefs with judgments, but a present-day Kantian who distinguishes animal beliefs from judgments can do so. Kant’s examples of the types of things to which animals are responsive make it clear that he holds that they perceive—and, more generally, represent—Gibsonian affordances. Such affordances go beyond the information contained in an animal’s sensory impressions at any given moment, so their perceptual representation must involve what Kant calls synthesis of the imagination. But this does not imply that Kant thinks that human perception is like animal perception in the sense that it does not involve or depend upon concepts. (shrink)

While many animals — pigeons, for example — have analogue magnitude states , it has recently been argued that certain discriminatory tasks provide evidence for the claim that these states are non-conceptual . These states are taken to be nonconceptual in that they cannot meet a test for concept possession such as Evans’s Generality Constraint. I argue that while such animals probably do not have numerical concepts, the evidence suggests that they could have numerical-ish concepts. On what I call ‘the (...) diffuse’ account of numerical-ish concepts, animals could have analogue magnitude states which represent amount and these states could meet the Generality Constraint . This account also avoids the problems faced by a ‘centred’ account of numerical-ish concepts which cannot meet the Generality Constraint. (shrink)

Everyone allows that human and animal minds are distinctively (indeed, massively) different in their manifest effects. Humans have been able to colonize nearly every corner of the planet, from the artic, to deserts, to rainforests (and they did so in the absence of modern technological aids); they live together in large cooperative groups of unrelated individuals; they communicate with one another using the open-ended expressive resources of natural language; they are capable of cultural learning that accumulates over generations to result (...) in science, art, and agriculture; and they are remarkably thoughtful and inventive. There is much less agreement about how these manifest differences should be explained, however. (shrink)

Rendell and Whitehead's thorough review dispels notions that culture is an exclusive faculty of humans and higher primates. We applaud the authors, but differ with them regarding the evolution of cetacean culture, which we argue resulted from the availability of abundant but spatially and temporally patchy prey such as schooling fish. We propose two examples of gene-culture coevolution: (1) acoustic abilities and acoustic traditions, and (2) transmission of environmental information and longevity.

Henrich et al. describe an innovative research program investigating cross-cultural differences in the selfishness axiom (in economic games) in humans, yet humans are not the only species to show such variation. Chimpanzees and capuchin monkeys show signs of deviating from the standard self-interest paradigm in experimental settings by refusing to take foods that are less valuable than those earned by conspecifics, indicating that they, too, may pay attention to relative gains. However, it is less clear whether these species also show (...) the other-regarding preferences seen in humans. (shrink)

Hull et al. argue that information and replication are both essential ingredients in any selection process. But both information and replication are found in only some selection processes, and should not be included in abstract descriptions of selection intended to help researchers discover and describe selection processes in new domains.

We present behavioral lateralizations of spiders and ants and their probable survival value. They clearly conform to the vertebrate lateralizations reviewed by Vallortigara & Rogers and to earlier arthropod studies. We suggest two complementary reviews: differences in lesion susceptibility and muscle strength between left and right body side, and perceptual biases and predator inspection in invertebrates.

For a long time, several natural phenomena have been considered unproblematically selection processes in the same sense of “selection.” In our target article we dealt with three of these phenomena: gene-based selection in biological evolution, the reaction of the immune system to antigens, and operant learning. We characterize selection in terms of three processes (variation, replication, and environmental interaction) resulting in the evolution of lineages via differential replication. Our commentators were largely supportive with respect to variation and environmental interaction but (...) critical with respect to replication, in particular its appeal to information. With some reservations, our commentators think that our general analysis of selection may fit gene-based selection in biological evolution and the reaction of the immune system but not operant learning. If nothing else, this article shows that the notion of selection is not as straightforward as it may seem. (shrink)

Although there are some common underlying mechanisms for many nonhuman behavioural asymmetries, the evidence at present is not compelling for commonalities in cerebral organisation across vertebrates. Phylogenetic analysis of detour behaviour in fish suggests that more closely related species are not particularly similar in the direction of turning; contingency and demands of ecological niches may better explain such asymmetries.

The types of cetacean cultural behavior patterns described (primarily food-related and communication-related) reflect a very different research focus than that found in primatology, where dietary variation and food processing is emphasized and other potentially patterns have (until recently) been relatively neglected. The lack of behavioral research in all but a few cetacean species is also notable, as it mirrors a bias in primatology towards only a few genera.

Over the last quarter century, the dominant tendency in comparative cognitive psychology has been to emphasize the similarities between human and nonhuman minds and to downplay the differences as (Darwin 1871). In the present target article, we argue that Darwin was mistaken: the profound biological continuity between human and nonhuman animals masks an equally profound discontinuity between human and nonhuman minds. To wit, there is a significant discontinuity in the degree to which human and nonhuman animals are able to approximate (...) the higher-order, systematic, relational capabilities of a physical symbol system (PSS) (Newell 1980). We show that this symbolic-relational discontinuity pervades nearly every domain of cognition and runs much deeper than even the spectacular scaffolding provided by language or culture alone can explain. We propose a representational-level specification as to where human and nonhuman animals' abilities to approximate a PSS are similar and where they differ. We conclude by suggesting that recent symbolic-connectionist models of cognition shed new light on the mechanisms that underlie the gap between human and nonhuman minds. (shrink)

In our target article, we argued that there is a profound functional discontinuity between the cognitive abilities of modern humans and those of all other extant species. Unsurprisingly, our hypothesis elicited a wide range of responses from commentators. After responding to the commentaries, we conclude that our hypothesis lies closer to Darwin's views on the matter than to those of many of our contemporaries.

From an early age, humans know a surprising amount about basic physical principles, such as gravity, force, mass, and shape. We can see this in the way that young children play, and manipulate objects around them. The same behaviour has long been observed in primates - chimpanzees have been shown to possess a remarkable ability to make and use simple tools. But what does this tell us about their inner mental state - do they therefore share the same understanding to (...) that of a young child? Do they understand the simple, underlying physical principles involved? Though some people would say that they do, this book reports groundbreaking research that questions whether this really is the case. -/- Folk Physics for Apes challenges the assumptions so often made about apes. It offers us a rare glimpse into the workings of another mind, examining how apes perceive and understand the physical world - an understanding that appears to be both similar to, and yet profoundly different from our own. The book will have broad appeal to evolutionary psychologists, developmental psychologists, and those interested in the sub-disciplines of cognitive science (philosophy, anthropology). The book additionally offers for developmental psychologists some valuable new non-verbal techniques for assessing causal understanding in young children. (shrink)

We suggest that the phenomenon of uncertainty monitoring in nonhuman animals contributes richly to the conception of nonhuman animals' self-monitoring. We propose that uncertainty may play a role in the emergence of new forms of behavior that are adaptive. We recommend that Smith et al. determine the extent to which the uncertain response transfers immediately to other test paradigms.

There are good arguments for examining great ape communicative achievements for what they contribute to our understanding of great ape cognition and its evolution (Russon & Begun, in press a). Our concern is whether Shanker & King's (S&K's) thesis advances communication studies from a broader cognitive and evolutionary perspective.

Atran & Norenzayan's (A&N's) analysis fits with other perspectives on evoked culture: Cultural beliefs might emerge simply from the fact that people share a common cognitive architecture. But no perspective on culture can be complete without incorporating the unstoppable role of communication. The evolutionary landscape of culture will be most completely mapped by theories that describe specifically how communication translates evolved cognitive canals into cultural beliefs.