In the philosophical literature concerning scientific experimentation, the notion of robustness has been solely discussed in relation to experimental results. In this paper, I propose a novel sense of experimental robustness that applies to experimental procedures. I call the foregoing sense of robustness procedure robustness and characterize it as the capacity of an experimental procedure to maintain its intended function invariant during the experimental process despite possible variations in its inputs. I argue that PR (...) is a precondition for what I call result robustness, which refers to the traditional sense of experimental robustness, namely the existence of convergent experimental results obtained through different and independent means of detection. Furthermore, I argue, PR and RR constitute useful experimental strategies in the context of high-energy physics experiments, but these strategies are not without limitations. (shrink)

In the human sciences, experimental research is used to establish causal relationships. However, the extrapolation of these results to the target population can be problematic. To facilitate extrapolation, we propose to use the statistical technique Latent Class Regression Analysis in combination with the analogical reasoning theory for extrapolation. This statistical technique can identify latent classes that differ in the effect of X on Y. In order to extrapolate by means of analogical reasoning, one can characterize the latent classes (...) by a combination of features, and then compare these features to features of the target. (shrink)

This paper tackles the problem of the nature of the space of perception. Based both on philosophical arguments and on results obtained from original experimental situations, it attempts to show how space is constituted concretely, before any distinction between the “inner” and the “outer” can be made. It thus sheds light on the presuppositions of the well-known debate between internalism and externalism in the philosophy of mind; it argues in favor of the latter position, but with arguments that (...) are foundationally antecedent to this debate. We call the position we defend enactive externalism. It is based on experimental settings which, in virtue of their minimalism, make it possible both to defend a sensori-motor/enactive theory of perception; and, especially, to inquire into the origin of the space of perception, showing how it is concretely enacted before the controversy between internalism and externalism can even take place. (shrink)

Those working in experimental philosophy have raised a number of arguments against the use of conceptual analysis in philosophical inquiries. But they have typically focused on a model that pursues conceptual analysis by taking intuitions as a kind of (defeasible) evidence for philosophical hypotheses. Little attention has been given to the constitutivist alternative, which sees metaphysical modal facts as reflections of constitutive semantic rules. I begin with a brief overview of the constitutivist approach and argue that we can defend (...) a role for conceptual analysis, so understood, in ontological disputes against both the general skepticism about the relevance of intuitions, and against the specific worries raised by experimental results. Finally, I argue that even if the constitutivist view is adopted, experimental philosophy may still have quite a useful role to play, though purely empirical inquiries cannot in principle do the ontological work alone. (shrink)

H. Collins has challenged the empiricist understanding of experimentation by identifying what he thinks constitutes the experimenter’s regress: an instrument is deemed good because it produces good results, and vice versa. The calibration of an instrument cannot alone validate the results: the regressive circling is broken by an agreement essentially external to experimental procedures. In response, A. Franklin has argued that calibration is a key reasonable strategy physicists use to validate production of results independently of their (...) interpretation. The physicists’ arguments about the merits of calibration are not coextensive with the interpretation of results, and thus an objective validation of results is possible. I argue, however, that the in-situ calibrating and measurement procedures and parameters at the Large Hadron Collider are closely and systematically interrelated. This requires empiricists to question their insistence on the independence of calibration from the outcomes of the experiment and rethink their position. Yet this does not leave the case of in-situ calibration open to the experimenter’s regress argument; it is predicated on too crude a view of the relationship between calibration and measurement that fails to capture crucial subtleties of the case. (shrink)

Our epistemic access to mathematical objects, like numbers, is mediated through our external representations of them, like numerals. Nevertheless, the role of formal notations and, in particular, of the internal structure of these notations has not received much attention in philosophy of mathematics and cognitive science. While systems of number words and of numerals are often treated alike, I argue that they have crucial structural differences, and that one has to understand how the external representation works in order to form (...) an advanced conception of numbers. The relation between external representations and mathematical cognition will be discussed by drawing on experimental results from cognitive science and mathematics education, and I argue for the constitutive role of external representations for the development of an advanced conception of numbers. (shrink)

There might be value in examining the phenomenon of free will, without attempting to solve the debate surrounding its existence. Studies have suggested that diminishing belief in free will increases cheating behavior and that basic physiological states such as appetite diminish free will. These findings, if robust, could have important philosophical and ethical implications. Accordingly, we aimed to critically review methodologies and results in the body of literature that speaks to the two following questions: whether certain factors can change (...) belief in free will or not and whether changes in belief in free will impact different attitudinal or behavioral factors or not. Searching the PubMed and PsycInfo databases with different keyword strategies supplemented with reference section searches, we found 52 relevant papers for review. For each distinct study, we extracted information regarding: sample characteristics and related analyses, procedures and methodology, factors investigated, results, and effect sizes. Overall, we found that the samples were heavily constituted of women, of students and younger participants, with little information about representation of ethnic minorities. Procedures and methodology relied strongly on the use of experimental manipulations and a wide array of scales, including scales created by researchers. Several studies suggest the static and consequential properties of belief in free will. However, these conclusions are restrained by numerous limitations of the supporting body of evidence and the absence of replication studies. (shrink)

Spiritualism designates a philosophy that lays claim to the separation of mind and body and the ontological and epistemological primacy of the former. In France, it is associated with the names of Victor Cousin and René Descartes, or more precisely with what Cousin made of Descartes as the founding father of a brittle rational psychology, closed off from the positive sciences, and as a critic in respect to the empiricist legacy of the idéologues. Moreover, by considering merely the end result, (...) severed from its polemical genesis, we are prevented from understanding how the category of experience constituted a crucial question for spiritualism itself. Through returning to the origin of these discussions in the 1826 preface to Cousin’s Fragments philosophiques, this essay pursues a threefold path: to show that the public birth of Cousinian spiritualism coincides with the affirmation of applying the experimental method, issuing from Bacon, to the study of facts of consciousness; that Cousin’s later evolution follows a process of radicalization—that is, in this context, of ontologization and of reduction; and that by recovering this genesis, we can distinguish many forms of spiritualisms committed to the experimental method, both in alliance with the early Cousin and against the later Cousin. In this way, we can rediscover the interwoven philosophical links, lost in the process of institutionalization, between metaphysical demands and empiricist concerns, or between “French” philosophy and the legacy of Condillac. (shrink)

An experiment aimed at detecting a DC voltage across a conductor induced by the steady magnetic field of a coil, carried out in 1998, provided a positive (although preliminary) evidence for such an effect, which might be interpreted as a breakdown of local Lorentz invariance. We repeated in 1999 the same experiment with a different experimental apparatus and a sensitivity improved by two orders of magnitude. The results obtained are discussed here in detail. They confirm the findings of (...) the previous experiment, and show, among the others, that the effect is independent of the direction of the current. A possible interpretation of the results is given in terms of a geometric description of the gravitational and the electromagnetic interactions by means of phenomenological, energy-dependent metrics. (shrink)

Despite the fact that reproduction of experiments by peers has traditionally been regarded as of the utmost importance in enabling the intersubjectivity of scientific practice, reproductions may yield discordant results and deciding which result should be favored may not be an easy task. According to Harry Collins, experimental disagreement is resolved by the action of social, political and economic factors, but not by means of epistemic and scientific, or so-called internal reasons. His motivation for such a claim is (...) the presence of an infinite regress at the core of experimental activity that, according to him, cannot be stopped with scientific resources alone: the experimenters’ regress. The goal of this... (shrink)

There are indications that simple reaction time might have slowed in Western countries, based on both cohort- and multi-study comparisons. A possible limitation of the latter method in particular is measurement error stemming from methods variance, which results from the fact that instruments and experimental conditions change over time and between studies. We therefore set out to measure the simple auditory reaction time (SRT) of 7,081 individuals (2,997 males and 4,084 females) born in Sweden 1959-1985 (subjects were aged (...) between 27 and 54 years at time of measurement). Depending on cut-offs and adjustment for ageing related slowing on SRT, the data suggest that SRT has increased between 3 and 16 ms in the 27 birth years covered in the present sample. The slowing is unlikely to be explained by attrition, as evaluated by comparing the general intelligence × birth-year interactions and standard deviations for both male participants and dropouts, utilizing military conscript cognitive ability data. The present result is consistent with previous studies employing alternative methods, and may result from several synergistic factors, such as possible recent micro-evolutionary trends favouring lower g in Sweden and the effects of industrially produced neurotoxic substances on peripheral nerve conduction velocity. (shrink)

Do we live in a computer simulation? I will present an argument that the results of a certain experiment constitute empirical evidence that we do not live in, at least, one type of simulation. The type of simulation ruled out is very specific. Perhaps that is the price one must pay to make any kind of Popperian progress.

A pervasive feature of the sciences, particularly the applied sciences, is an experimental focus on a few (often only one) possible causal connections. At the same time, scientists often advance and apply relatively broad models that incorporate many different causal mechanisms. We are naturally led to ask whether there are normative rules for integrating multiple local experimental conclusions into models covering many additional variables. In this paper, we provide a positive answer to this question by developing several inference (...) rules that use local causal models to place constraints on the integrated model, given quite general assumptions. We also demonstrate the practical value of these rules by applying them to a case study from ecology. Experimental scope in applied sciences Fusing the results of experiments A concrete example of the inference rules Application to a case study. (shrink)

Moti Mizrahi provides experimental evidence according to which subjects judge that a person ought to ? even when she cannot ?. He takes his results to constitute a falsification of the alleged intuitiveness of the ‘Ought Implies Can’ principle. We point out that in the light of the fact that (a) ‘ought’ is multiply ambiguous, that (b) only a restricted set of readings of ‘ought’ will be relevant to the principle, and that (c) he did not instruct his (...) subjects appropriately – or otherwise ensure that in their ‘ought’ judgements they applied the relevant concept(s) – Mizrahi’s conclusions appear premature. We suggest two ways in which the experimental design could be adjusted or supplemented. First, Mizrahi could instruct (or prime) subjects to read the ‘ought’ question in a particular way. Second, he could complement his experiment by asking follow-up questions aimed at uncovering the implications for blame of subjects’ judgements. Once these adjustments are applied, an experiment with a similar outcome would be more significant. (shrink)

Various analytical tools originally developed for theories of mechanistic explanation have recently been imported into the ongoing debate on the hypothesis of extended cognition. One such tool that appears particularly relevant to that debate is Craver’s mutual manipulability account of constitution, most of all because it promises to settle the debate on experimental grounds. This paper investigates whether it is possible to deliver on that promise. We first find that, far from grounding an experimental evaluation of HEC, (...) MM is conceptually incompatible with both internalist and externalist accounts of cognition. Next, we propose a suitable modification of MM, MM*, but it turns out that MM* presupposes rather than produces clarity on the extension of cognition. Moreover, subject to MM* the inference to constitution is radically empirically underdetermined. Finally, we argue that our results can be generalized and conclude that, for principled reasons, it is impossible to experimentally determine whether cognitive processes have extracerebral constituents. Determining the extension of cognition is an inherently pragmatic matter. (shrink)

Formal epistemology is just what it sounds like: epistemology done with formal tools. Coinciding with the general rise in popularity of experimental philosophy, formal epistemologists have begun to apply experimental methods in their own work. In this entry, I survey some of the work at the intersection of formal and experimental epistemology. I show that experimental methods have unique roles to play when epistemology is done formally, and I highlight some ways in which results from (...) formal epistemology have been used fruitfully to advance epistemically-relevant experimental work. The upshot of this brief, incomplete survey is that formal and experimental methods often constitute mutually informative means to epistemological ends. (shrink)

Introduction: Traditionally, empathy has been studied from two main perspectives: the theory-theory approach and the simulation theory approach. These theories claim that social emotions are fundamentally constituted by mind states in the brain. In contrast, classical phenomenology and recent research based on enactive theories consider empathy as the basic process of contacting others’ emotional experiences through direct bodily perception and sensation. Objective: This study aims to enrich knowledge of the empathic experience of pain by using an experimental phenomenological method. (...) Method: Implementing an experimental paradigm used in affective neuroscience, we exposed 28 healthy adults to a video of sportspersons suffering physical accidents while practicing extreme sports. Immediately after watching the video, each participant underwent a phenomenological interview to gather data on embodied, multi-layered dimensions (bodily sensations, emotions, and motivations) and temporal aspects of empathic experience. We also performed quantitative analyses of the phenomenological categories. Results: Experiential access to the other person’s painful experience involves four main-themes. Bodily resonance: participants felt a multiplicity of bodily, affective, and kinesthetic sensations. Attentional focus: some participants centered their attention more on their own personal discomfort and sensations of rejection, while others on the pain and suffering experienced by the sportspersons. Kinesthetic motivation: some participants experienced the feeling in their bodies to avoid or escape from watching the video, while others experienced the need to help the sportspersons avoid suffering any injury while practicing extreme sports. Temporality of experience: participants witnessed temporal fluctuations in their experiences, bringing intensity changes in their bodily resonance, attentional focus, and kinesthetic motivation. Finally, two experiential structures were found: one structure is self-centered empathic experience, characterized by bodily resonance, attentional focus centered on the participant’s own experience of seeing the sportsperson suffering, and self-protective kinesthetic motivation; the other structure is other-centered empathic experience, characterized by bodily resonance, attentional focus centered on the sportsperson, and prosocial kinesthetic motivation to help them. Discussion: We show how phenomenological data may contribute to comprehending empathy for pain in social neuroscience. In addition, we address the phenomenological aspect of the enactive approach to the three dimensions of embodiment of human consciousness, especially the intersubjective dimension. Also, based on our results, we suggest an extension of the enactive theory for non-interactive social experience. (shrink)

The purpose of the study is to reveal the stages and content of experimental work on the spiritual and moral education of contract servicemen in the army environment. The article focuses on the presence of certain patterns in the assimilation of spiritual and moral qualities by contract servicemen, which formed the basis of the tested method of spiritual and moral education. The scientific novelty lies in the substantiation and experimental verification of the methodology for the spiritual and moral (...) education of contract servicemen in the socio-cultural army environment, based on the consistent formation of the ideals and values of their centuries-old domestic and military culture. As a result of the study, a positive dynamics of the level of formation of spiritual and moral qualities among contract servicemen at the control stage was revealed, which proves the effectiveness of the developed methodology. (shrink)

This chapter first evokes the objects of chemistry and the role played by experimentation in the constitution of its objects. It then studies how chemists set up experimental protocols to deal with the dependence of chemical bodies on the inert or living environments in which they are found. To this end, its pays particular attention to the preparation of reference matrices for measurement and for the validation of results. In so doing, it stresses the fact that chemists (...) use a dizzying pluralism of instruments, procedures, reasonings, and methods in order to characterize and quantify substances, which are never truly detachable, except in the case of approximations satisfying particular objectives, from the empirical complex {apparatus-methods-chemical substances-associated medium} in which they are scrutinized. (shrink)

I examine two sets of experimental results about the semantics of general terms, by Genone and Lombrozo (2012) and by Nichols, Pinillos and Mallon (forthcoming) that allegedly reveal significant variations in semantic intuitions as regards the correct application of general terms. The two sets of authors propose two entirely different semantic treatments: Genone and Lombrozo espouse a hybrid semantics whereas Nichols, Pinillos and Mallon are inclined towards an appeal to ambiguity. I cast some doubts on the coherence of (...) a hybrid theory and argue in favor of the ambiguity approach. But I also argue that the sort of ambiguitiy Nichols, Pinillos and Mallon postulate is easy to incorporate to non-descriptivist approaches. (shrink)

From the late 1950s until 1975, cognition was understood mainly as disembodied symbol manipulation in cognitive psychology, linguistics, artificial intelligence, and the nascent field of Cognitive Science. The idea of embodied cognition entered the field of Cognitive Linguistics at its beginning in 1975. Since then, cognitive linguists, working with neuroscientists, computer scientists, and experimental psychologists, have been developing a neural theory of thought and language (NTTL). Central to NTTL are the following ideas: (a) we think with our brains, that (...) is, thought is physical and is carried out by functional neural circuitry; (b) what makes thought meaningful are the ways those neural circuits are connected to the body and characterize embodied experience; (c) so-called abstract ideas are embodied in this way as well, as is language. Experimental results in embodied cognition are seen not only as confirming NTTL but also explained via NTTL, mostly via the neural theory of conceptual metaphor. Left behind more than three decades ago is the old idea that cognition uses the abstract manipulation of disembodied symbols that are meaningless in themselves but that somehow constitute internal “representations of external reality” without serious mediation by the body and brain. This article uniquely explains the connections between embodied cognition results since that time and results from cognitive linguistics, experimental psychology, computational modeling, and neuroscience. (shrink)

I consider a problem for Kant’s transcendental idealism if one construes it as a claim that human beings know from a particular, human perspective. Namely: ordinarily, when we speak someone seeing from a perspective, we understand other people to have other perspectives, and think that people can change their perspectives by moving away from them, to a different one. So one may recognize that one’s own perspective is a perspective: by comparing to others, by seeing a former perspective from a (...) new vantage point. But Kant denies such plurality and variability for his human cognitive perspective. Thus one may worry that Kant’s view is incoherent: Kant claims that we can know only from one perspective, yet, in order to recognize that perspective as such, he himself must stand "outside" of it. I consider a potential Kantian response to this charge, by way of interpreting the Dialectic of the first Critique. When one attempts to know things that lie beyond experience, one attempts to exit the human perspective; in the Dialectic, Kant argues that in doing so, one falls into contradictions and empty thinking. These failed attempts, I suggest, allow human knowers (and Kant describing them) to recognize the human perspective as such – by taking up a different vantage point, as it were – but also, as failures, do not constitute a true alternative to the universally shared, necessary human cognitive perpsective. So, I propose, can one interpret Kant’s claim in the B Preface to the Critique of Pure Reason that the Dialectic is a confirming result – a “splendid touchstone” -- in an a priori experiment: it is an experimental, failed attempt to exit the human perspective. (shrink)

The idea that experimentation is autonomous is widely shared amongst the New Experimentalists. However, it is not precisely stated how we should understand this thesis, or how to interpret it. In consequence, the aim of this paper is to explicate the different ways in which the autonomy of experiment thesis could be read, and to suggest, taking into account an analysis of the process by which an experimental result is constituted and exemplifying this process by the means of the (...) study of an experiment, the measurement of the speed of light, how this thesis could be clarified and how to establish its scope and limits. (shrink)

One aim of this essay is to contribute to understanding aesthetic communication—the process by which agents aim to convey thoughts and transmit knowledge about aesthetic matters to others. Our focus will be on the use of aesthetic adjectives in aesthetic communication. Although theorists working on the semantics of adjectives have developed sophisticated theories about gradable adjectives, they have tended to avoid studying aesthetic adjectives—the class of adjectives that play a central role in expressing aesthetic evaluations. And despite the wealth of (...) attention paid to aesthetic adjectives by philosophical aestheticians, they have paid little attention to contemporary linguistic theories of adjectives. We take our work to be a first step in remedying these lacunae. In this paper, we present four experiments that examine one aspect of how aesthetic adjectives ordinarily function: the context-sensitivity of their application standards. Our results present a prima facie empirical challenge to a common distinction between relative and absolute gradable adjectives because aesthetic adjectives are found to behave differently from both. Our results thus also constitute a prima facie vindication of some philosophical aestheticians’ contention that aesthetic adjectives constitute a particularly interesting segment of natural language, even if the boundaries of this segment might turn out to be different from what they had in mind. (shrink)

This Element introduces major issues in the epistemology of experimental physics through discussion of canonical physics experiments and some that have not yet received much philosophical attention. The primary challenge is to make sense of how physicists justify crucial decisions made in the course of empirical research. Judging a result as epistemically significant or as calling for further technical scrutiny of the equipment is one important context of such decisions. Judging whether the instrument has been calibrated, and which data (...) should be included in the analysis are others. To what extent is it possible to offer philosophical analysis, systematization, and prescriptions regarding such decisions? To what extent can there be explicit epistemic justification for them? The primary aim of this Element is to show how a nuanced understanding of science in practice informs an epistemology of experimental physics that avoids strong social constructivism. (shrink)

In this paper we use an experimental approach to investigate how linguistic conventions can emerge in a society without explicit agreement. As a starting point we consider the signaling game introduced by Lewis. We find that in experimental settings, small groups can quickly develop conventions of signal meaning in these games. We also investigate versions of the game where the theoretical literature indicates that meaning will be less likely to arise—when there are more than two states for actors (...) to transfer meaning about and when some states are more likely than others. In these cases, we find that actors are less likely to arrive at strategies where signals have clear conventional meaning. We conclude with a proposal for extending the use of the methodology of experimental economics in experimental philosophy. (shrink)

In his recent book, The Opacity of Mind, Peter Carruthers advances a skeptical theory of self-knowledge, integrating results from experimental psychology and cognitive science.1 In this essay, I want to suggest that the situation is not quite as dire as Carruthers makes it out to be. I respond to Carruthers by advancing a constitutive theory of self-knowledge. I argue that self-knowledge, so understood, is not only compatible with the empirical research that Carruthers utilizes, but also helps to make (...) sense of these results. (shrink)

The Constitution of Independence is a contribution to the newly rejuvenated subject of comparative Commonwealth constitutional law, politics, and history. In Australia, Canada, and New Zealand, a series of fascinating developments have been under way for more than a decade, characterized by independent thinking, experimentation, and cross-Commonwealth borrowing of constitutional ideas. These include the final termination of constitutional ties with the United Kingdom Parliament and the emergence of controversial issues including variably entrenched or implied rights and freedoms; wide-ranging claims (...) by indigenous peoples; republicanism; and assertions of national, popular, and sectional sovereignty.This book explores the development of constitutional thinking in Australia, Canada, and New Zealand from early domination by Imperial ideas, through the adoption of the Statute of Westminster and the contemplation of severing Imperial connections, to irreversible acquisition of constitutional independence in the 1980s. This book focusses primarily on sovereignty and the legal system, concepts which are also central to contemporary constitutional theory in Europe and the United States. The book closes with an evaluation of recent varied and often contradictory accounts of the constitutional foundations of Australia, Canada, and New Zealand, which depict a wide range of scenarios: from constitutional continuity and respect for the rule of law, to popular sovereignty and disguised revolution. Oliver argues that explanations of constitutional independence are characterized by their reliance on independent, country-specific constitutional thinking that evolved over the last century. on. (shrink)

This paper reports the results of a series of experiments examining intertemporal choice. The paper makes three contributions: First, it presents a new analytic device, the intertemporal choice triangle, which is analogous to the Marschak--Machina choice triangle used in the analysis of choice under risk. Second, we have developed a new experimental design based on the intertemporal choice triangle which allows subjects greater flexibility in making choices, and which allows the researcher to make more subtle inferences, than are (...) possible with designs previously employed. Subjects are able to create their most-preferred outcome in each choice situation by choosing a constrained linear combination of two extreme options. Third, our results show that while subjects do not typically maximize present value, they are significantly influenced break by present value considerations. We refer to this finding as it present value-seeking behavior. We find only weak evidence of several previously documented intertemporal choice anomalies in our framework. (shrink)

This chapter offers a definition of luck from Aristotle's Physics, considers how this definition of luck from the Physics relates to Aristotle's treatment of luck in his works on ethics and the good life, as well as how it compares with the modern understanding of moral luck.

Dissociation is an important aspect of responses to traumatic events. According to a number of influential theories, it negatively impacts cognitive performance including encoding of the trauma memories, leading to an increased risk of later conditions such as posttraumatic stress disorder . We tested this hypothesis experimentally in two studies by inducing dissociation in the laboratory and investigating the effects on several aspects of cognition, including time estimation, digit and spatial span, and story recall. Dissociation was related to decrements in (...) time estimation, digit span, and story retention, but did not affect perceptual attention, spatial span, or immediate story recall. The results are discussed in the context of theoretical models of PTSD and their implications for official questioning of traumatized individuals such as sexual assault survivors. (shrink)

Laboratory experimentation was once considered impossible or irrelevant in economics. Recently, however, economic science has gone through a real ‘laboratory revolution’, and experimental economics is now a most lively subfield of the discipline. The methodological advantages and disadvantages of controlled experimentation constitute the main subject of this thesis. After a survey of the literature on experiments in philosophy and economics, the problem of testing normative theories of rationality is tackled. This philosophical issue was at the centre of a famous (...) controversy in decision theory, during which a methodology of normative falsification was first articulated and used to assess experimental results. In the third chapter, the methodological advantages of controlled experimentation are illustrated and discussed with examples taken from the experiments on the so-called ‘preference reversal’ phenomenon. Laboratory testing allows to establish with a high degree of certainty that certain phenomena lie behind the experimental data, by means of independent testing, elimination of alternative hypotheses, and the use of different instruments of observation. The fourth chapter is devoted to a conceptual analysis of the problem of ‘parallelism’. This is the problem of inferring from the occurrence of a phenomenon in the laboratory, to its instantiation also in non-laboratory environments. Experimental economists have discussed parallelism at length, and their views are presented and criticised. Eventually, it is argued that parallelism is a factual matter and as such can only be established on empirical grounds. The fifth chapter provides an example of how one can argue for parallelism, focusing on the case of experimentation on the ‘winner’s curse’ phenomenon. The role of experiments as ‘mediators’ between theoretical models and their target domain of application is illustrated, and the structure of parallelism arguments analysed in detail. Finally, in the last chapter, economic experiments are compared to simulations, in order to highlight their specific characteristics. (shrink)

The Handbook of Experimental Economic Methodology, edited by Guillaume R. Fréchette and Andrew Schotter, aims to confront and debate the issues faced by the growing field of experimental economics. For example, as experimental work attempts to test theory, it raises questions about the proper relationship between theory and experiments. As experimental results are used to inform policy, the utility of these results outside the lab is questioned, and finally, as experimental economics tries to (...) integrate ideas from other disciplines like psychology and neuroscience, the question of their proper place in the discipline of economics becomes less clear.This book contains papers written by some of the most accomplished scholars working at the intersection of experimental, behavioral, and theoretical economics talking about methodology. It is divided into four sections, each of which features a set of papers and a set of comments on those papers. The intention of the volume is to offer a place where ideas about methodology could be discussed and even argued. Some of the papers are contentious---a healthy sign of a dynamic discipline---while others lay out a vision for how the authors think experimental economics should be pursued. This exciting and illuminating collection of papers brings light to a topic at the core of experimental economics. Researchers from a broad range of fields will benefit from the exploration of these important questions. (shrink)

Experimental taxonomy was a diverse area of research, and botanists who helped develop it were motivated by a variety of concerns. While experimental taxonomy was never totally a taxonomic enterprise, improvement in classification was certainly one major motivation behind the research. Hall's and Clements' belief that experimental methods added more objectivity to classification was almost universally accepted by experimental taxonomists. Such methods did add a new dimension to taxonomy — a dimension that field and herbarium studies, (...) however rigorous, could not duplicate. Nonetheless, experimental techniques were never completely divorced from traditional taxonomic methods. In practice, all experimental taxonomists employed a combination of descriptive and experimental methods. Most researchers freely acknowledged a debt to traditional taxonomy. Furthermore, the greater rigor of twentieth-century taxonomy was not due entirely to experimentalism. Both the experimental and descriptive aspects of taxonomy were improved by the increased use of quantitative methods, particularly statistics.52From the beginning, a number of experimental taxonomists were interested primarily in classification. But many approached their research from fields other than taxonomy. These botanists were concerned primarily with ecological and genetic problems rather than with classification. There is little indication that they drew a sharp distinction: for example, taxonomic and cytogenetic conclusions were interwoven in Babcock and Stebbins' 1938 study of Crepis 53 (this was even more true of Babcock's final mongraph on the genus, published in 1947). Similarly, the extensive series of monographs, “Experimental Studies on the Nature of Species,” initiated by the Carnegie Institution group in 1940 combined ecological, cytogenetic, and taxonomic conclusions. Indeed, the significance of the major projects completed by experimental taxonomists was largely due to the fact that they were comprehensive studies rather than strictly taxonomic or cytogenetic.In a general sense, the primary motivation behind much of experimental taxonomy was evolutionary. Beginning in the second decade of the century Hall and Clements exhorted taxonomists to take an explicitly evolutionary perspective on research. Hall undoubtedly spoke for the majority of experimental taxonomists when he stated, “If there be anything at all to organic evolution, then taxonomy is dealing with the products of evolution and it is this that gives to taxonomy both its highest mission and its greatest responsibility.”54Aside from a common interest in evolution, however, the theoretical orientations of experimental taxonomists were varied. This diversity is strikingly illustrated by the evolutionary views of members of the Carnegie Institution research group. Experimental taxonomy was initiated by Clements as one aspect of his Lamarckian study of adaptation and speciation. In contrast, Hall's research was inspired by a broad concern for evolutionary problems. Hall rarely referred to specific evolutionary mechanisms; rather, he applied a general conception of evolutionary processes to deduce phylogenetic relationships. His later associates at the Carnegie Institution explicitly dissociated themselves from Clements' theoretical framework. The neo-Darwinian interpretations of adaptation and speciation presented by Clausen, Keck, and Hiesey could hardly have been more different than those of Clements. However, this major shift in theoretical orientation should not obscure significant similarities between the research of Clements and later Carnegie workers. In terms of research problems and methodology, the first volume of “Experimental Studies on the Nature of Species” was an extension of the Clementsian research program. Clausen, Keck, and Hiesey's monograph was the mature discussion of transplant experimentation that Clements had very tentatively initiated during the first decades of the twentieth century. The bond that linked the members of the Carnegie Institution research group to experimental taxonomists in general was one of shared methodology rather than common theoretical orientation. While Clements' evolutionary views were eventually repudiated, his enthusiasm for innovative experimental methods was shared by later workers.The development of experimental taxonomy faced significant problems. During the period 1920–1950 this area of botanical research remained a hybrid discipline. The aims and scope of experimental taxonomy were never articulated in a completely unified manner. Consequently, even among experimental taxonomists, there were disagreements over the relation of their research to other botanical endeavors. Even though experimental taxonomy had close ties with general taxonomy, a number of experimental taxonomists questioned the “taxonomic” nature of their research55. Even to the extent that this hybrid discipline could be identified as a branch of taxonomy, problems arose. Taxonomists, as we have seen, were justifiably skeptical of what appeared to be a rapid influx of untested methods and ideas. Experimental taxonomists were not merely incorporating well-accepted methods from ecology and cytogenetics; during the period 1920–1950 the fields from which experimental taxonomists borrowed were themselves undergoing major theoretical and methodological changes. Despite problems and conflicts, experimental taxonomists did contribute improvements to classification. Furthermore, they made significant contributions to plant ecology and evolutionary genetics.The development of experimental taxonomy indicates that twentieth-century botanists were not necessarily isolated in naturalist and experimentalist camps. The joint session of taxonomists, cytologists, and geneticists at the 1926 International Congress of Plant Sciences indicates communication among specialists fairly early in the century. The papers and commentaries presented during this session do not reveal the hostility and intolerance that supposedly characterized encounters between experimentalists and naturalists. Nor do they suggest incompatible conceptual worlds separating geneticists and taxonomists.Discussions between taxonomists and other specialists were not limited to a single international congress. Particularly during the 1930s discussions among specialists appear to have been fairly widespread. Groups such as the Biosystematists and the Society for the Study of Systematics in Relation to General Biology served as forums for discussion among biologists from a variety of disciplines. The naturalist-experimentalist dichotomy tends to obscure the broad research interests of a number of prominent twentieth-century botanists. Most of the experimental taxonomists cannot be characterized adequately as either naturalists or experimentalists. Traditionally trained taxonomists such as Hall, Keck, and Turrill throughout their careers participated in both experimental and herbarium research. And a number of specialists in fields other than taxonomy took an active interest in taxonomic problems, not necessarily limited to experimental aspects. For example, Anderson suggested a number of innovations to make herbarium collections more amenable to statistical analysis.This historical study of experimental taxonomy indicates a different relationship between experimentalism and taxonomy than that portrayed by the naturalist-versus-experimentalist dichotomy. F. E. Clements originated experimental taxonomy as a revolt against descriptive botany. In retrospect, this revolution was not vigorously waged and was not successfully completed. Experimental taxonomy was never an entirely experimental approach to botanical research. Even the most ardent advocates of experimentalism relied heavily on methods inherited from traditional taxonomy. Moderate exponents of experimental taxonomy stressed the compatibility of experimental methods, field observation, and herbarium techniques. Attempts to fuse cytogenetics, ecology, and taxonomy during the period 1920–1950 resulted in an impressive body of research. However, this fusion constituted neither a repudiation of descriptive botany nor a complete revision of taxonomic theory of practice. (shrink)

We investigate argumentation where an expression is substituted with a less precise expression. We propose that the effect that this deprecization has on the audience be called deprecization effect. When the audience agrees more with the less precise version of the argument, there is a positive deprecization effect. We conducted an experiment where the participants were presented with a court room scenario. The results of the experiment confirm the following hypothesis: If the participants find it hard to agree with (...) the precise version of the argument and accept the use of the imprecise term, they will agree more with the imprecise version of the argument. Furthermore, we show that a person who reacts in this way to deprecization commits the fallacy of equivocation. (shrink)

In studies of scientific methodology, surprisingly little attention has been given to tests of hypotheses. Such testing constitutes a methodology common to various scientific disciplines and is an essential factor in the development of science since it determines which theories are retained. The classical theory of tests is a major accomplishment but requires modification in order to produce a theory that accounts for the success of science. The revised theory is an analysis of the nondeductive aspect of scientific reasoning. It (...) results in a new definition of probability and a nonclassical point of view with regard to the foundations of probability. (shrink)

In studies of scientific methodology, surprisingly little attention has been given to tests of hypotheses. Such testing constitutes a methodology common to various scientific disciplines and is an essential factor in the development of science since it determines which theories are retained. The classical theory of tests is a major accomplishment but requires modification in order to produce a theory that accounts for the success of science. The revised theory is an analysis of the nondeductive aspect of scientific reasoning. It (...) results in a new definition of probability and a nonclassical point of view with regard to the foundations of probability. (shrink)

In studies of scientific methodology, surprisingly little attention has been given to tests of hypotheses. Such testing constitutes a methodology common to various scientific disciplines and is an essential factor in the development of science since it determines which theories are retained. The classical theory of tests is a major accomplishment but requires modification in order to produce a theory that accounts for the success of science. The revised theory is an analysis of the nondeductive aspect of scientific reasoning. It (...) results in a new definition of probability and a nonclassical point of view with regard to the foundations of probability. (shrink)

The circumstances under which classical genetics became established at the turn of the nineteenth century have become an integral part of the standard narrative on the history of genetics. Yet, despite considerable scholarly efforts, it has remained a matter of debate how exactly the so-called 'rediscovery' of Mendel's laws came about around 1900. In this situation, unpublished research records can be invaluable tools to arrive at a more substantial and more satisfying picture of the order of historical events. This paper (...) makes extended use of the research protocols covering Carl Correns' hybridisation experiments with Pisum sativum between 1896 and 1899. The resulting reconstruction sketches the portrait of a scientist following a particular research question — xenia — struggling with his experimental material, and slowly building up an epistemic regime in which questions and observations could acquire a relevance which did not strike Correns when he first took note of them. The microhistorical gaze through the magnifying glass of research notes reveals the kind of delays that appear to be constitutive for empirically-driven thinking in general. The research notes of Correns help not only to make this point, they also display some of the intricacies and material peculiarities which characterise the experimental process of hybridisation and the particular type of inferences it allows one to make. (shrink)

Hypoxia hampers ATP production and threatens cell survival. Since cellular energetics tightly controls cell responses and fate, ATP levels and dynamics are of utmost importance. An integrated mathematical model of ATP synthesis by the mitochondrial oxidative phosphorylation/electron transfer chain system has been recently published :e36, 2005). This model was validated under static conditions. To evaluate its performance under dynamical situations, we implemented and simulated it . Inner membrane potential and [NADH] were used as indicators of mitochondrial function. Root mean squared (...) error was used to compare simulations and experiments :39155–39165, 2003). Steady-state experimental data were reproduced within 2–6%. Model dynamics were evaluated under: baseline, activation of NADH production, addition of ADP, addition of inorganic phosphate, oxygen exhaustion. In all phases, except the last one, ΔΨ and [NADH] as well as oxygen consumption, were reproduced . Under anoxia, simulated ΔΨ markedly depolarized . In conclusion, the model reproduces dynamic data as long as oxygen is present. Anticipated improvement by the inclusion of ATP consumption and explicit Krebs cycle are under evaluation. (shrink)