Recent work has suggested that conservation efforts such as restoration ecology and invasive species eradication are largely value-driven pursuits. Concurrently, changes to global climate are forcing ecologists to consider if and how collections of species will migrate, and whether or not we should be assisting such movements. Herein, we propose a philosophical framework which addresses these issues by utilizing ecological and evolutionary interrelationships to delineate individual ecological communities. Specifically, our Evolutionary Community Concept recognizes unique collections of species that interact and (...) have co-evolved in a given geographic area. We argue this concept has implications for a number of contemporary global conservation issues. Specifically, our framework allows us to establish a biological and science-driven context for making decisions regarding the restoration of systems and the removal of exotic species. The ECC also has implications for how we view shifts in species assemblages due to climate change and it advances our understanding of various ecological concepts, such as resilience. (shrink)

A many-worlds interpretation is of quantum mechanics tells us that the linear equations of motion are the true and complete laws for the time-evolution of every physical system and that the usual quantum-mechanical states provide complete descriptions of all possible physical situations. Such an interpretation, however, denies the standard way of understanding quantum-mechanical states. When the pointer on a measuring device is in a superposition of pointing many different directions, for example, we are to understand this as many pointers, each (...) in a differentworld, each pointing in a different determinate direction. We ask here whether such talk makes any genuinely intelligible sense of the term world. We conclude that it does not. (shrink)

In the literature on multiple realizability and the identity theory, cases of neural plasticity have enjoyed a very limited role. The present article attempts to remedy this small influence by arguing that clinical and experimental evidence of quite extensive neural reorganization offers compelling support for the claim that psychological kinds are multiply realized in neurological kinds, thus undermining the identity theory. In particular, cases are presented where subjects with no measurable psychological deficits also have vast, though gradually received, neurological damage. (...) Common objections and concerns are also discussed and rejected. 1 Introduction2 The GRP, Serial Lesion Effect, and Multiple Realizability2.1 A case study of the serial lesion effect2.2 Evaluating the case study’s evidence for multiple realizability3 The GRP More Generally4 Objections to the GRP as Evidence for Multiple Realizability4.1 Small plastic effects and neurological taxonomies4.2 But do neural regions and locations even matter at all?4.3 But are there not other options besides location?5 Conclusion. (shrink)

This paper examines diverse perspectives around the concept of responsibility concerning antibiotic use in animal agriculture. Antibiotic use in agriculture has been identified as a source of antimicrobial resistance, one of the largest public health threats today. In the United States, efforts to curb antibiotic use in farming draws on a diverse range of actors—including farmers, veterinarians, consumers, and public health advocates—and relies on a mix of industry standards and federal guidelines around responsible use. The paper selects a similarly diverse (...) range of people and employs Q methodology to query the points of disagreement and consensus around the practices that constitute responsible antibiotic use in animal agriculture, and who is responsible for antimicrobial resistance. We find a diverse mix of actor types across three discourses, but with clear differences between farmers and public health advocates. We also argue that, in some cases, points of disagreement and agreement are often based on different interpretations of ideas, indicating points of common ground where there might appear to be disagreement, and areas of difference where there appears to be agreement. We argue that these flexible interpretations of some of the key issues around antibiotic use are nevertheless grounded in durable differences in views of what agriculture is and what it should be. (shrink)

In 2017 we published a paper in this journal proposing a philosophical framework for recognizing ecological communities as natural entities, the Evolutionary Community Concept. That paper attracted a lengthy reply; herein we take the opportunity to clarify critical aspects of the ECC and use a case study to demonstrate how the ECC can be made operational. We maintain the ECC provides a framework useful for establishing objectives associated with ongoing and proposed restoration and conservation efforts.

Lindquist et al. convincingly argue that the brain implements psychological operations that are constitutive of emotion rather than modules subserving discrete emotions. However, thenatureof such psychological operations is open to debate. I argue that considering appraisal theories may provide alternative interpretations of the neuroimaging data with respect to the psychological operations involved.

What would it mean to apply quantum theory, without restriction and without involving any notion of measurement and state reduction, to the whole universe? What would realism about the quantum state then imply? This book brings together an illustrious team of philosophers and physicists to debate these questions. The contributors broadly agree on the need, or aspiration, for a realist theory that unites micro- and macro-worlds. But they disagree on what this implies. Some argue that if unitary quantum evolution has (...) unrestricted application, and if the quantum state is taken to be something physically real, then this universe emerges from the quantum state as one of countless others, constantly branching in time, all of which are real. The result, they argue, is many worlds quantum theory, also known as the Everett interpretation of quantum mechanics. No other realist interpretation of unitary quantum theory has ever been found. Others argue in reply that this picture of many worlds is in no sense inherent to quantum theory, or fails to make physical sense, or is scientifically inadequate. The stuff of these worlds, what they are made of, is never adequately explained, nor are the worlds precisely defined; ordinary ideas about time and identity over time are compromised; no satisfactory role or substitute for probability can be found in many worlds theories; they can't explain experimental data; anyway, there are attractive realist alternatives to many worlds. Twenty original essays, accompanied by commentaries and discussions, examine these claims and counterclaims in depth. They consider questions of ontology - the existence of worlds; probability - whether and how probability can be related to the branching structure of the quantum state; alternatives to many worlds - whether there are one-world realist interpretations of quantum theory that leave quantum dynamics unchanged; and open questions even given many worlds, including the multiverse concept as it has arisen elsewhere in modern cosmology. A comprehensive introduction lays out the main arguments of the book, which provides a state-of-the-art guide to many worlds quantum theory and its problems. (shrink)

The focus on translational research in clinical trials has the potential to generate clinically relevant genetic data that could have importance to patients. This raises challenging questions about communicating relevant genetic research results to individual patients. An exploratory pharmacogenetic analysis was conducted in the international ovarian cancer phase III trial, AGO-OVAR 16, which found that patients with clinically important germ-line BRCA1/2 mutations had improved progression-free survival prognosis. Mechanisms to communicate BRCA results were evaluated, because these findings may be beneficial to (...) patients and their families. Communicating individual BRCA results was not anticipated during clinical trial design. Consequently, options were not available for patients to indicate their preference for receiving their individual results when they signed pharmacogenetic informed consent. Differences in local requirements, clinical practice, and opinion regarding the ethical aspects of how to convey genetic results to patients are all potential barriers to returning individual BRCA results to patients. Communicating the aggregate BRCA result from this study provided clinical investigators with a mechanism to disseminate the overall study finding to patients while taking individual circumstances, local guidelines and clinical practice into account. This study illustrates the importance of increasing the clarity and scope of informed consent and the need for patient engagement to ensure clinical trial participants can indicate their preference regarding receipt of potentially important individual pharmacogenetic results. This study was registered in the NCT Clinical Trial Registry under NCT00866697 on March 19, 2009, following approval from participating ethics committees. (shrink)

A popular issue in mind is to explain why conscious mental states are conscious. Prinz (2012) defends three claims in an effort to make such an explanation: (i)mental states become conscious when and only when we attend to them; (ii)attention is a process by which mental states become available to working memory; so (iii) mental states are conscious when and only when they become available to working memory. Here I attack Prinz's theory, made explicit in (iii), by showing that there (...) is strong empirical reason to doubt each of the foregoing claims. I rehearse defenses of the claims Prinz has made, as well as possible replies he does not explicitly employ, and show how they are inadequate to save his view. (shrink)

A popular claim is that social media is a cause of contemporary high levels of political polarization. In this paper, I consider three of the most common kinds of arguments for the thesis. One type lays out a narrative of causes, tracing the causal steps between logging on to social media and later becoming more polarized. Another type uses computer modeling to show how polarized effects can arise from systems that are analogous to use of social media. The final type (...) considers straightforward experimental evidence for the polarizing effect. I reject each of these arguments and explain why they are unconvincing. (shrink)

Brette contends that the neural coding metaphor is an invalid basis for theories of what the brain does. Here, we argue that it is an insufficient guide for building an artificial intelligence that learns to accomplish short- and long-term goals in a complex, changing environment.

Piccinini and Craver (Synthese 183:283–311, 2011) argue for the surprising view that psychological explanation, properly understood, is a species of mechanistic explanation. This contrasts with the ‘received view’ (due, primarily, to Cummins and Fodor) which maintains a sharp distinction between psychological explanation and mechanistic explanation. The former is typically construed as functional analysis, the analysis of some psychological capacity into an organized series of subcapacities without specifying any of the structural features that underlie the explanandum capacity. The latter idea, of (...) course, sees explanation as a matter of describing structures that maintain (or produce) the explanandum capacity. In this paper, I defend the received view by criticizing Piccinini and Craver’s argument for the claim that psychological explanation is not distinct from mechanistic explanation, and by showing how psychological explanations can possess explanatory force even when nothing is known about the underlying neurological details. I conclude with a few brief criticisms about the enterprise of mechanistic explanation in general. (shrink)

David Hume’s skeptical solution to the problem of induction was grounded in his belief that we learn by means of custom. We consider here how a form of reinforcement learning like custom may allow an agent to learn how to learn in other ways as well. Specifically, an agent may learn by simple reinforcement to adopt new forms of learning that work better than simple reinforcement in the context of specific tasks. We will consider how such a bootstrapping process (...) may lead to a system that includes trial-and-error forms of learning like win-stay/lose-shift, probe and adjust, and simple reinforcement itself together with higher-rationality inferential tools. (shrink)

Exposure Therapy (ET) has demonstrated its efficacy in the treatment of phobias, anxiety and Post-traumatic Stress Disorder (PTSD), however, it suffers a high drop-out rate because of too low or too high patient engagement in treatment. Virtual Reality Exposure Therapy (VRET) is comparably effective regarding symptom reduction and offers an alternative tool to facilitate engagement for avoidant participants. Neuroimaging studies have demonstrated that both ET and VRET normalize brain activity within a fear circuit. However, previous studies have employed brain imaging (...) technology which restricts people’s movement and hides their body, surroundings and therapist from view. This is at odds with the way engagement is typically controlled. We used a novel combination of neural imaging and VR technology—Functional Near-Infrared Spectroscopy (fNIRS) and Immersive Projection Technology (IPT), to avoid these limitations. Although there are a few studies that have investigated the effect of VRET on a brain function after the treatment, the present study utilized technologies which promote ecological validity to measure brain changes after VRET treatment. Furthermore, there are no studies that have measured brain activity within VRET session. In this study brain activity within the prefrontal cortex (PFC) was measured during three consecutive exposure sessions. N = 13 acrophobic volunteers were asked to walk on a virtual plank with a 6 m drop below. Changes in oxygenated (HbO) hemogl... (shrink)

Though multiple realization has been an important concept in the philosophy of mind and philosophy of psychology for more than fifty years, it has not been until quite recently that anyone proposed an actual theory of what multiple realization is. This paper argues that the most dominant current theories of multiple realization are unacceptable. It does so by mainly arguing for a particular methodology for theorizing about multiple realization. Rather than being mostly constrained by intuitions, as theorizing about folk notions (...) usually is, theorizing about multiple realization is, it argues, constrained by the theoretical context in which the concept was born. By the lights of this method for constructing theories of multiple realization, these current theories are unacceptable. (shrink)

David Lewis (1969) introduced sender-receiver games as a way of investigating how meaningful language might evolve from initially random signals. In this report I investigate the conditions under which Lewis signaling games evolve to perfect signaling systems under various learning dynamics. While the 2-state/2- term Lewis signaling game with basic urn learning always approaches a signaling system, I will show that with more than two states suboptimal pooling equilibria can evolve. Inhomogeneous state distributions increase the likelihood of pooling equilibria, (...) but learning strategies with negative reinforcement or certain sorts of mutation can decrease the likelihood of, and even eliminate, pooling equilibria. Both Moran and APR learning strategies (Bereby-Meyer and Erev 1998) are shown to promote successful convergence to signaling systems. A model is presented that illustrates how a language that codes state-act pairs in an order-based grammar might evolve in the context of a Lewis signaling game. The terms, grammar, and the corresponding partitions of the state space co-evolve to generate a language whose structure appears to reflect canonical natural kinds. The evolution of these apparent natural kinds, however, is entirely in service of the rewards that accompany successful distinctions between the sender and receiver. Any metaphysics grounded on the structure of a natural language that evolved in this way would track arbitrary, but pragmatically useful distinctions. (shrink)

This article examines a model of formation within higher education that is committed to educationally based spiritual formation, desiring to see students formed as people who love God and neighbor, devoting their lives to redemptive labor in the world. Deeply influenced by the evolving relationship between the department, the institution, and the broader evangelical culture, the Christian Formation and Ministry department of Wheaton College seeks to equip students with the theological and theoretical foundation, the personal maturity of character and faith, (...) and the practical ministry skills necessary to lead and participate in the formational and caring mission of the church in the world. Wheaton College’s unique approach to teaching spiritual formation and soul care in both their undergraduate and graduate programs is examined through a historical context of the department, a liberal arts and learning-centered approach to education that includes biblical foundations, philosophical framework, pedagogy, and teaching curriculum and assessment. (shrink)

Signaling games with reinforcement learning have been used to model the evolution of term languages (Lewis 1969, Convention. Cambridge, MA: Harvard University Press; Skyrms 2006, “Signals” Presidential Address. Philosophy of Science Association for PSA). In this article, syntactic games, extensions of David Lewis’s original sender–receiver game, are used to illustrate how a language that exploits available syntactic structure might evolve to code for states of the world. The evolution of a language occurs in the context of available vocabulary and (...) syntax—the role played by each component is compared in the context of simple reinforcement learning. (shrink)

In recent years deflationary accounts of self-deception, under the banner of motivationalism, have proven popular. On these views the deception at work is simply a motivated bias. In contrast, we argue for an account of self-deception that involves more robustly deceptive unconscious processes. These processes are strategic, flexible, and demand some retention of the truth. We offer substantial empirical support for unconscious deceptive processes that run counter to certain philosophical and psychological claims that the unconscious is rigid, ballistic, and of (...) limited cognitive sophistication. (shrink)

One of the more compelling features of Denis Dutton’s The Art Instinct is its theoretical parsimony. Utilizing what essentially amounts to one explanatory principle—that of Darwinian selection—Dutton advances a theory of aesthetics that is at once general enough to account for cross-cultural variations in artistic production and sufficiently nuanced to promote insights into individual artworks. In doing this, Dutton’s work could not offer a greater contrast to some of the more vocal trends in contemporary aesthetic theory, where ponderous theorizing and (...) rebarbative jargons have violently opposed the idea—otherwise so modest—that aesthetic activities might draw on the evolved capacities of the human imagination. On .. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Freedom, Truth, and Human Dignity: The Second Vatican Council’s Declaration on Religious Freedom: A New Translation, Redaction History, and Interpretation of “Dignitatis humanae.” by David L. Schindler and Jr. Nicholas J. HealyBarrett H. TurnerFreedom, Truth, and Human Dignity: The Second Vatican Council’s Declaration on Religious Freedom: A New Translation, Redaction History, and Interpretation of “Dignitatis humanae.” By David L. Schindler and Nicholas J. Healy, Jr. Grand (...) Rapids, Mich.: Eerdmans, 2015. Pp. xiv + 477. $45.00 (paper). ISBN: 978-0-8028-7155-8.“I fear that you are going to give the inaccurate impression that this document was exclusively the work of the Americans at the Council, or nearly so,” wrote Ernest Primeau, an American bishop who helped revise Dignitatis humanae (DH) at Vatican II, to a priest-journalist. “The truth is... that many others from other nations played an important role in the writing and passage of the declaration.” Despite Primeau’s warning, popular and scholarly interpretations of DH have often hewed closely to John Courtney Murray’s juridical approach, usually in contrast to the integralism of Cardinal Alfredo [End Page 309] Ottaviani and the Spanish episcopate. Yet “many others” did not fit into those two groups, for a large contingent of bishops favorable to religious liberty nonetheless sought to undergird the juridical reasoning for the right with an ontological foundation.David L. Schindler and Nicholas Healy promote these other voices in Freedom, Truth, and Human Dignity. Indeed, they argue that the other voices—the “French” or “ontological” school comprised of bishops such as Alfred Ancel and Karol Wojtyła—provide the true key to DH’s meaning and significance. The book thus responds from the perspective of Communio theology to Murray-ite political theologies that are critical of John Paul II’s emphasis on truth as the basis for freedom. Accompanying Schindler’s and Healy’s essays are conciliar texts charting the origin and influence of this ontological school: the six conciliar drafts, the oral and written interventions of Wojtyła, and an oral intervention of Ancel. These texts, transcribed from the Acta Synodalia Sacrosancti Concilii Oecumenici Vaticani II (AS), have been translated by Patrick T. Brannon, S.J., and Michael Camacho. Also included is a side-by-side comparison of the third and sixth drafts that displays the changes made to the juridical position in response to the ontological school.Schindler’s 170-page essay, “Freedom, Truth, and Human Dignity: An Interpretation of Dignitatis Humanae on the Right to Religious Freedom,” is the heart of the work. Schindler recapitulates in a fresh way themes from his prior analyses of liberalism and Murray. In section 1, he summarizes how Wojtyła’s interventions influenced the evolution of DH such that Murray’s juridical approach became subordinated to an emphasis on truth as the foundation and telos of freedom. He conveys Wojtyła’s concern that DH not divide reason and revelation, but that reason be presented as capable of knowing that religion is “nature’s crown and summit” (50). Section 2 outlines Murray’s postconciliar objections to DH’s final version, namely, that it assumes that the American juridical approach leads to relativism and that its insistence on truth as religious liberty’s foundation undermines the universality of the right by degrading the liberty of those in error. To the first, Schindler replies (in section 3) that Murray’s juridical approach necessarily entails what Servais Pinckaers, O.P., called the “freedom of indifference,” Murray’s denials of relativism notwithstanding. The juridical approach leads to the conception of civil space as something neutral to truth-claims about God, but finally results in a state-enforced indifferentism that limits the religious liberty of those who hold that all of existence, prior to human freedom, is intrinsically ordered to God. “The human act, considered from the perspective of the juridical order, is first empty; and truth thus becomes, from that same juridical perspective, adventitious, something that, as such, cannot but logically burden the free-intelligent human act by arbitrarily limiting and closing what is considered by government, for legal purposes, to be simply open, or abstracted from all (metaphysical-religious) content... (shrink)

I develop the decision-theoretic approach to quantum probability, originally proposed by David Deutsch, into a mathematically rigorous proof of the Born rule in (Everett-interpreted) quantum mechanics. I sketch the argument informally, then prove it formally, and lastly consider a number of proposed ``counter-examples'' to show exactly which premises of the argument they violate. (This is a preliminary version of a chapter to appear --- under the title ``How to prove the Born Rule'' --- in Saunders, Barrett, Kent and (...) Wallace, "Many worlds? Everett, quantum theory and reality", forthcoming from Oxford University Press.). (shrink)

David Buller's recent book, Adapting Minds, is a philosophical critique of the field of evolutionary psychology. Buller argues that evolutionary psychology is utterly bankrupt from both a theoretical and an empirical point of view. Although Adapting Minds has been well received in both the academic press and the popular media, we argue that Buller's critique of evolutionary psychology fails.

David Buller’s recent book, _Adapting Minds_, is a philosophical critique of the field of evolutionary psychology. Buller argues that evolutionary psychology is utterly bankrupt from both a theoretical and an empirical point of view. Although _Adapting Minds _has been well received in both the academic press and the popular media, we argue that Buller’s critique of evolutionary psychology fails.

In a recent paper in this journal (Rottschaefer and Martinsen 1990) we have proposed a view of Darwinian evolutionary metaethics that we believe improves upon Michael Ruse's (e.g., Ruse 1986) proposals by claiming that there are evolutionary based objective moral values and that a Darwinian naturalistic account of the moral good in terms of human fitness can be given that avoids the naturalistic fallacy in both its definitional and derivational forms while providing genuine, even if limited, justifications for substantive ethical (...) claims. Jonathan Barrett (this issue) has objected to our proposal contending that we cannot hold for the reality of supervenient moral properties without either falling foul of the naturalistic fallacy or suffering the consequences of postulating inexplicable moral properties. In reply, we show that Barrett's explicit arguments that we commit either the definitional or derivational form of the naturalistic fallacy fail and that his naturalistic intuitions that supervenience explanations of moral properties by nonmoral properties force us into what we call the explanatory form of the naturalistic fallacy also fail. Positively, his objections help us to clarify the nature of the naturalistic fallacy within an evolutionary based naturalistic ethics and to point out the proper role of both supervenience explanations and moral explanations in such an ethics. (shrink)

In this volume, Stephen M. Gardiner and David A. Weisbach present arguments for and against the relevance of ethics to global climate policy. Gardiner argues that climate change is fundamentally an ethical issue, since it is an early instance of a distinctive challenge to ethical action, and ethical concerns are at the heart of many of the decisions that need to be made. Consequently, climate policy that ignores ethics is at risk of.

This is Volume 9 of Oxford Studies in Political Philosophy. It contains papers on democracy, the law, political liberalism, voting, social experimentation, state neutrality, equality and incentives, self-ownership, drugs and prostitution, and Lincoln. Chapters include: “Challenging Democratic Commitments: On Liberal Arguments for Instrumentalism About Democracy” (Daniel Viehoff); “Emotional Abuse and the Law” (Elizabeth Brake); “Practical Political Liberalism” (Caleb Perl); “Beyond the Voting Debate” (Brookes Brown); “Social Experimentation in an Unjust World” (Jacob Barrett and Allen Buchanan); “State Neutrality and the (...) Dismantling of the Gendered Division of Labour” (Anca Gheaus); “If It’s Not Your Talent, How Come You’re Getting an Incentive?” (Peter Dietsch); “(Owning) our Bodies, (Owning) our Selves?” (Sean Aas); “Self-Sovereignty, Drugs, and Prostitution” (Peter de Marneffe); “Lincoln as Political Philosopher” (William A. Edmundson). (shrink)

A dualistic, discarnate picture haunts contemporary cognitive science of religion. Cognitive scientists of religion generally assert or assume a reductive physicalism, primarily through unconscious mental mechanisms that detect supernatural agency where none exists and a larger purpose to life when none exists. Accompanying this focus is a downplaying of conscious reflection in religious belief and practice. Yet the mind side of dualism enters into CSR in interesting ways. Some cognitive scientists turn practitioners of religion into dualists who allegedly believe in (...) disembodied spirits. By emphasizing supernatural agency, CSR neglects nonpersonal powers and meanings in religion, both in terms of magical thinking and practice and of nonpersonal conceptions of divinity. Additionally, some cognitive scientists of religion declare that all humans are innate dualists. They use this alleged dualism to explain beliefs about both an afterlife and transfers of consciousness. Finally, some call on this dualism to serve a salvific function, trying to salvage some meaning to human life. (shrink)

Legal theorists are familiar with John Finnis's book Natural Law and Natural Rights, but usually overlook his interventions in US constitutional debates and his membership of a group of conservative Catholic thinkers, the 'new natural lawyers', led by theologian Germain Grisez. In fact, Finnis has repeatedly advocated conservative positions concerning lesbian and gay rights, contraception and abortion, and his substantive moral theory derives from Grisez. Bamforth and Richards provide a detailed explanation of the work of the new natural lawyers within (...) and outside the Catholic Church - the first truly comprehensive explanation available to legal theorists - and criticize Grisez's and Finnis's arguments concerning sexuality and gender. New natural law is, they argue, a theology rather than a secular theory, and one which is unappealing in a modern constitutional democracy. This book will be of interest to legal and political theorists, ethicists, theologians and scholars of religious history. (shrink)

John Rawls is widely regarded as one of the most influential philosophers of the twentieth century, and his work has permanently shaped the nature and terms of moral and political philosophy, deploying a robust and specialized vocabulary that reaches beyond philosophy to political science, economics, sociology, and law. This volume is a complete and accessible guide to Rawls' vocabulary, with over 200 alphabetical encyclopaedic entries written by the world's leading Rawls scholars. From 'basic structure' to 'burdened society', from 'Sidgwick' to (...) 'strains of commitment', and from 'Nash point' to 'natural duties', the volume covers the entirety of Rawls' central ideas and terminology, with illuminating detail and careful cross-referencing. It will be an essential resource for students and scholars of Rawls, as well as for other readers in political philosophy, ethics, political science, sociology, international relations and law. (shrink)

A normative framework for modeling causal and counterfactual reasoning has been proposed by Spirtes, Glymour, and Scheines. The framework takes as fundamental that reasoning from observation and intervention differ. Intervention includes actual manipulation as well as counterfactual manipulation of a model via thought. To represent intervention, Pearl employed the do operator that simplifies the structure of a causal model by disconnecting an intervened-on variable from its normal causes. Construing the do operator as a psychological function affords predictions about how people (...) reason when asked counterfactual questions about causal relations that we refer to as undoing, a family of effects that derive from the claim that intervened-on variables become independent of their normal causes. Six studies support the prediction for causal arguments but not consistently for parallel conditional ones. Two of the studies show that effects are treated as diagnostic when their values are observed but nondiagnostic when they are intervened on. These results cannot be explained by theories that do not distinguish interventions from other sorts of events. (shrink)