Thomas Nadelhoffer

Some have argued that advances in the science of human decision-making, particularly research on automaticity and unconscious priming, would ultimately thwart our commonsense understanding of free will and moral responsibility. Do people interpret this research as a threat to their self-understanding as free and responsible agents? We approached this question by seeing how feelings of surprise mediate the relationship between personal sense of control and third-personal attributions of free will and responsibility. Across three studies (N = 1,516) we found that people with a greater sense of personal control were more surprised at the results of experiments showing effects of unconscious priming on moral behavior. Surprise differentially mediated the relationship between personal control and attributions of free will and responsibility: people attributed less free will and more responsibility as they were more surprised. This suggests that people exhibit defensive thinking with respect to responsibility, but not free will.

While some philosophers believe disabilities constitute a “bad-difference,” others think they constitute a “mere-difference” (Barnes 2016). On this latter view, while disabilities may create certain hardships, having a disability is not bad in itself. I argue that chronic pain problematizes this disability-neutral view. In doing so, I first survey the literature on chronic pain (§1). Then, I argue that Barnes’s mere-difference view cannot adequately accommodate the lived experiences of many people who suffer from chronic pain (§2). Next, I consider two ways Barnes might respond and I explain why these responses are not workable (§3). Finally, I conclude with a brief discussion of disability variantism, the view that just as some disabilities can be neutral or even positive for some individuals, other disabilities like chronic pain can understandably make some people’s lives miserable not because society has failed them but simply because some conditions can openly conflict with well-being (§4).

While some philosophers believe disabilities constitute a “bad-difference,” others think they constitute a “mere-difference” (Barnes 2016). On this latter view, while disabilities may create certain hardships, having a disability is not bad in itself. I argue that chronic pain problematizes this disability-neutral view. In doing so, I first survey the literature on chronic pain (§1). Then, I argue that Barnes’s mere-difference view cannot adequately accommodate the lived experiences of many people who suffer from chronic pain (§2). Next, I consider two ways Barnes might respond and I explain why these responses are not workable (§3). Finally, I conclude with a brief discussion of disability variantism, the view that just as some disabilities can be neutral or even positive for some individuals, other disabilities like chronic pain can understandably make some people’s lives miserable not because society has failed them but simply because some conditions can openly conflict with well-being (§4).

Research on the folk psychology of free will suggests that people believe free will is incompatible with determinism and that human decision-making cannot be exhaustively characterized by physical processes. Some suggest that certain elements of Western cultural history, especially Christianity, have helped to entrench these beliefs in the folk conceptual economy. Thus, on the basis of this explanation, one should expect to find three things: a significant correlation between belief in dualism and belief in free will, that people with predominantly incompatibilist commitments are likely to exhibit stronger dualist beliefs than people with predominantly compatibilist commitments, and people who self-identify as Christians are more likely to be dualists and incompatibilists than people who do not self-identify as Christians. We present the results of two studies that challenge two of these expectations. While we do find a significant correlation between belief in dualism and belief in free will, we found no significant difference in dualist tendencies between compatibilists and incompatibilists. Moreover, we found that self-identifying as Christian did not significantly predict preference for a particular metaphysical conception of free will. This calls into question assumptions about the relationship between beliefs about free will, dualism, and Christianity.

Experimental work on free will typically relies on deterministic stimuli to elicit judgments of free will. We call this the Vignette-Judgment model. We outline a problem with research based on this model. It seems that people either fail to respond to the deterministic aspects of vignettes when making judgments or that their understanding of determinism differs from researcher expectations. We provide some empirical evidence for this claim. In the end, we argue that people seem to lack facility with the concept of determinism, which calls into question the validity of experimental work operating under the Vignette-Judgment model. We also argue that alternative experimental paradigms are unlikely to elicit judgments that are philosophically relevant to questions about the metaphysics of free will.

Theories of free will are often measured against how well they capture everyday intuitions about free will. But what are these everyday intuitions, and what theoretical commitments do they express? Empirical methods have delivered mixed messages. In response, some free will theorists have developed error theories to undermine the credentials of countervailing intuitions. These efforts are predicated on the idea that people might misunderstand determinism in any of several ways. This paper sheds light on the comprehension problem. We first discuss recent efforts to explain systematic errors in how people interpret determinism. Then, we present the alarming results of two new preregistered studies exploring three types of comprehension failure: (a) epiphenomenal bypassing, (b) fatalistic bypassing, and (c) indeterministic intrusion. Our findings suggest that misunderstanding runs deeper than others have supposed. This casts doubt on existing models of commonsense thinking about free will. Unless and until researchers properly control for the kinds of misunderstandings we identify, research on free will intuitions cannot shed light on whether ordinary thinking reflects commitments to compatibilism or incompatibilism.

Judgments of blame for others are typically sensitive to what an agent knows and desires. However, when people act negligently, they do not know what they are doing and do not desire the outcomes of their negligence. How, then, do people attribute blame for negligent wrongdoing? We propose that people attribute blame for negligent wrongdoing based on perceived mental control, or the degree to which an agent guides their thoughts and attention over time. To acquire information about others’ mental control, people self-project their own perceived mental control to anchor third-personal judgments about mental control and concomitant responsibility for negligent wrongdoing. In four experiments (N = 841), we tested whether perceptions of mental control drive third-personal judgments of blame for negligent wrongdoing. Study 1 showed that the ease with which people can counterfactually imagine an individual being non-negligent mediated the relationship between judgments of control and blame. Studies 2a and 2b indicated that perceived mental control has a strong effect on judgments of blame for negligent wrongdoing and that first-personal judgments of mental control are moderately correlated with third-personal judgments of blame for negligent wrongdoing. Finally, we used an autobiographical memory manipulation in Study 3 to make personal episodes of forgetfulness salient. Participants for whom past personal episodes of forgetfulness were made salient judged negligent wrongdoers less harshly compared to a control group for whom past episodes of negligence were not salient. Collectively, these findings suggest that first-personal judgments of mental control drive third-personal judgments of blame for negligent wrongdoing and indicate a novel role for counterfactual thinking in the attribution of responsibility.

Advances in Experimental Philosophy of Free Will and Responsibility brings together leading researchers from psychology and philosophy to present new findings and ideas about human agency and moral responsibility. Their contributions reflect the growth of research in these areas over the past decade and highlight both the ways that philosophy can be relevant to empirical research and how empirical work can be relevant to philosophical investigations. Mixing new empirical work with the meta-philosophical and philosophical upshot of the latest research being done, chapters cover motivated cognition and free will beliefs, folk intuitions about manipulation and agency, mental control in assessments of responsibility, the importance of skilled decision making to free will judgments and the relationship between free will and substance dualism. Blending cutting-edge research from philosophy with methods from psychology, this collection is a compelling example of the value of interdisciplinary approaches, contributing to our understanding of the complex networks of attitudes, beliefs, and judgments that inform how we think about agency and responsibility.

There is a longstanding debate in philosophy concerning the relationship between intention and intentional action. According to the Single Phenomenon View, while one need not intend to A in order to A intentionally, one nevertheless needs to have an A-relevant intention. This view has recently come under criticism by those who think that one can A intentionally without any relevant intention at all. On this view, neither distal nor proximal intentions are necessary for intentional action. In this paper we present the results of two studies that explore folk ascriptions of proximal intentions and intentional actions in garden-variety, non-moral cases. Our findings suggest a very tight relationship between the two. We argue that the results from these two studies cohere with the Single Phenomenon View and give theorists who reject this view on conceptual grounds reason to worry.

A key source of support for the view that challenging people’s beliefs about free will may undermine moral behavior is two classic studies by Vohs and Schooler (2008). These authors reported that exposure to certain prompts suggesting that free will is an illusion increased cheating behavior. In the present paper, we report several attempts to replicate this influential and widely cited work. Over a series of five studies (sample sizes of N = 162, N = 283, N = 268, N = 804, N = 982) (four preregistered) we tested the relationship between (1) anti-free-will prompts and free will beliefs and (2) free will beliefs and immoral behavior. Our primary task was to closely replicate the findings from Vohs and Schooler (2008) using the same or highly similar manipulations and measurements as the ones used in their original studies. Our efforts were largely unsuccessful. We suggest that manipulating free will beliefs in a robust way is more difficult than has been implied by prior work, and that the proposed link with immoral behavior may not be as consistent as previous work suggests.

Research on the folk psychology of free will suggests that people believe free will is incompatible with determinism and that human decision-making cannot be exhaustively characterized by physical processes. Some suggest that certain elements of Western cultural history, especially Christianity, have helped to entrench these beliefs in the folk conceptual economy. Thus, on the basis of this explanation, one should expect to find three things: (1) a significant correlation between belief in dualism and belief in free will, (2) that people with predominantly incompatibilist commitments are likely to exhibit stronger dualist beliefs than people with predominantly compatibilist commitments, and (3) people who self-identify as Christians are more likely to be dualists and incompatibilists than people who do not self-identify as Christians. We present the results of two studies (n = 378) that challenge two of these expectations. While we do find a significant correlation between belief in dualism and belief in free will, we found no significant difference in dualist tendencies between compatibilists and incompatibilists. Moreover, we found that self-identifying as Christian did not significantly predict preference for a particular metaphysical conception of free will. This calls into question assumptions about the relationship between beliefs about free will, dualism, and Christianity.

"The development of modern diagnostic neuroimaging techniques led to discoveries about the human brain and mind that helped give rise to the field of neurolaw. This new interdisciplinary field has led to novel directions in analytic jurisprudence and philosophy of law by providing an empirically-informed platform from which scholars have reassessed topics such as mental privacy and self-determination, responsibility and its relationship to mental disorders, and the proper aims of the criminal law. Similarly, the development of neurointervention techniques that promise to deliver new ways of altering people's minds creates opportunities and challenges that raise important and rich conceptual, moral, jurisprudential, and scientific questions. The specific purpose of this volume is to make a contribution to the field of neurolaw by investigating the legal issues raised by the development and use of neurointerventions "--

Much of the literature from political psychology has focused on the negative traits that are positively associated with affective polarization—e.g., animus, arrogance, distrust, hostility, and outrage. Not as much attention has been focused on the positive traits that might be negatively associated with polarization. For instance, given that people who are intellectually humble display greater openness and less hostility towards conflicting viewpoints (Krumrei-Mancuso & Rouse, 2016; Hopkin et al., 2014; Porter & Schumann, 2018), one might reasonably expect them to be less polarized. We ran two studies designed to explore the relationship between various forms of humility and polarization. Our chief finding is that people who value humility are prone to what we are calling epistemic polarization—that is, judging the epistemic traits of contrapartisans negatively—which in turn plays a role in polarization more generally. Not only are contrapartisans deemed to have the wrong moral and political beliefs, they are also viewed as less humble and more arrogant, close-minded, and irrational. This makes matters even worse when it comes to the growing partisan divide. In light of our findings, we believe that the novel concept of epistemic polarization that we introduce is a promising target for further investigation.

In a series of pre-registered studies, we explored (a) the difference between people’s intuitions about indeterministic scenarios and their intuitions about deterministic scenarios, (b) the difference between people’s intuitions about indeterministic scenarios and their intuitions about neurodeterministic scenarios (that is, scenarios where the determinism is described at the neurological level), (c) the difference between people’s intuitions about neutral scenarios (e.g., walking a dog in the park) and their intuitions about negatively valenced scenarios (e.g., murdering a stranger), and (d) the difference between people’s intuitions about free will and responsibility in response to first-person scenarios and third-person scenarios. We predicted that once we focused participants’ attention on the two different abilities to do otherwise available to agents in indeterministic and deterministic scenarios, their intuitions would support natural incompatibilism—the view that laypersons judge that free will and moral responsibility are incompatible with determinism. This prediction was borne out by our findings.

The claim that common sense regards free will and moral responsibility as compatible with determinism has played a central role in both analytic and experimental philosophy. In this paper, we show that evidence in favor of this “natural compatibilism” is undermined by the role that indeterministic metaphysical views play in how people construe deterministic scenarios. To demonstrate this, we re-examine two classic studies that have been used to support natural compatibilism. We find that although people give apparently compatibilist responses, this is largely explained by the fact that people import an indeterministic metaphysics into deterministic scenarios when making judgments about freedom and responsibility. We conclude that judgments based on these scenarios are not reliable evidence for natural compatibilism.

Incompatibilists believe free will is impossible if determinism is true, and they often claim that this view is supported by ordinary intuitions. We challenge the claim that incompatibilism is intuitive to most laypersons and discuss the significance of this challenge to the free will debate. After explaining why incompatibilists should want their view to accord with pretheoretical intuitions, we suggest that determining whether incompatibilism is in fact intuitive calls for empirical testing. We then present the results of our studies, which put significant pressure on the claim that incompatibilism is intuitive. Finally, we consider and respond to several potential objections to our approach.

While most philosophers agree that the concept of intentional action plays an important role in our folk psychology, there is still wide-scale disagreement about the precise nature of this role. Unfortunately, there has traditionally been a dearth of empirical data about folk ascriptions of intentional action. Lately, however, philosophers and psychologists have begun making a concerted effort to fill in this empirical lacuna. In this dissertation, I discuss how this research sheds new light on problems in action theory, moral philosophy, and the philosophy of law. First, I set the stage with a discussion of some of the problems traditionally associated with the concept of intentional action. Here, questions include: What is it to do something intentionally? How are intentional actions related to intentions? What is the relationship between intentional action and conative, cognitive, and moral considerations? In this first section, my main goal is to survey the relevant literature from action theory in order to give the reader a perspicuous view of the kinds of debates that shape the philosophical landscape. Having laid out some of the salient problems, I then turn my attention to some recent empirical research on the folk concept of intentional action and discuss the relevance of this research to the philosophy of action. Next, I compare and contrast the folk concepts of intention and intentional action with their legal counterparts. My goal is to flesh out the extent to which these concepts diverge—a problem that is particularly pressing given that in litigated cases involving juries, jurors are often asked to judge whether the defendant acted intentionally, purposely, knowingly, etc. Finally, I flesh out the implications of the aforementioned data on the folk concept of intentional action and moral psychology—especially blame attribution—for the problem of jury partiality. I argue that the biasing effect that moral considerations have on our ascriptions of intentional action further complicates our attempt to ascertain the proper role that the concepts of intention and intentional action should play in criminal proceedings

Whether psychopathy is a mental disease or illness can affect whether psychiatrists should treat it and whether it could serve as the basis for an insanity defense in criminal trials. Our understanding of psychopathy has been greatly improved in recent years by new research in psychology and neuroscience. This illuminating research enables us to argue that psychopathy counts as a mental disease on any plausible account of mental disease. In particular, Szasz's and Pickard's eliminativist views and Sedgwick's social constructivist account of mental illness that might exclude psychopathy are not plausible, and there is no reason to exclude psychopathy under Boorse's and Scadding's biomedical accounts, Wakefield's harmful dysfunction account, and the DSM-IV-TR objective harm account of mental disease. The basic reason is that psychopathy involve neural dysfunction that increases risk of serious harm and loss to people with psychopathy.

Philosophers working in the nascent field of ‘experimental philosophy’ have begun using methods borrowed from psychology to collect data about folk intuitions concerning debates ranging from action theory to ethics to epistemology. In this paper we present the results of our attempts to apply this approach to the free will debate, in which philosophers on opposing sides claim that their view best accounts for and accords with folk intuitions. After discussing the motivation for such research, we describe our methodology of surveying people’s prephilosophical judgments about the freedom and responsibility of agents in deterministic scenarios. In two studies, we found that a majority of participants judged that such agents act of their own free will and are morally responsible for their actions. We then discuss the philosophical implications of our results as well as various difficulties inherent in such research

In this paper, our goal is to survey some of the legal contexts within which violence risk assessment already plays a prominent role, explore whether developments in neuroscience could potentially be used to improve our ability to predict violence, and discuss whether neuropredictive models of violence create any unique legal or moral problems above and beyond the well worn problems already associated with prediction more generally. In Violence Risk Assessment and the Law, we briefly examine the role currently played by predictions of violence in three high stakes legal contexts: capital sentencing, civil commitment hearings, and sexual predator statutes. In Clinical vs. Actuarial Violence Risk Assessment, we briefly examine the distinction between traditional clinical methods of predicting violence and more recently developed actuarial methods, exemplified by the Classification of Violence Risk software created by John Monahan and colleagues as part of the MacArthur Study of Mental Disorder and Violence [1]. In The Neural Correlates of Psychopathy, we explore what neuroscience currently tells us about the neural correlates of violence, using the recent neuroscientific research on psychopathy as our focus. We also discuss some recent advances in both data collection and data analysis that we believe will play an important role when it comes to future neuroscientific research on violence. In The Potential Promise of Neuroprediction, we discuss whether neuroscience could potentially be used to improve our ability to predict future violence. Finally, in The Potential Perils of Neuroprediction, we explore some potential evidentiary, constitutional, and moral issues that may arise in the context of the neuroprediction of violence

During the past two decades, an interest among philosophers in fictitious and illusory beliefs has sprung up in fields ranging anywhere from mathematics and modality to morality.1 In this paper, we focus primarily on the view that Saul Smilansky has dubbed “free will illusionism”—i.e., the purportedly descriptive claim that most people have illusory beliefs concerning the existence of libertarian free will, coupled with the normative claim that because dispelling these illusory beliefs would produce negative personal and societal consequences, those of us who happen to know the dangerous and gloomy truth about the non-existence of libertarian free will should simply keep quiet in the name of the common good.

In this paper, I first review some of the recent empirical work on the biasing effect that moral considerations have on folk ascriptions of intentional action. Then, I use Mark Alicke's affective model of blame attribution to explain this biasing effect. Finally, I discuss the relevance of this research - both philosophical and psychological - to the problem of the partiality of jury deliberation. After all, if the immorality of an action does affect folk ascriptions of intentionality, and all serious criminal offenses - e.g., murder and rape - are immoral in addition to being illegal, then a juror's ability to determine the relevant mens rea (i.e., guilty mind) of a defendant in an unbiased way may be seriously undermined.

In this paper, we examine Adam Feltz and Edward Cokely’s recent claim that “the personality trait extraversion predicts people’s intuitions about the relationship of determinism to free will and moral responsibility”. We will first present some criticisms of their work before briefly examining the results of a recent study of our own. We argue that while Feltz and Cokely have their finger on the pulse of an interesting and important issue, they have not established a robust and stable connection between extraversion and compatibilist-friendly intuitions.

On the surface, it seems plausible that the goodness or badness of an agent’s actions should be completely irrelevant to the question of whether she performed them intentionally, but there is growing evidence that ascriptions of intentional actions are affected by moral considerations. Joshua Knobe, for instance, has recently published a series of groundbreaking papers (2003a, 2003b, 2004) in which he suggests that people’s judgments concerning the intentionality of an action may sometimes depend on what they think about the action – morally speaking. One of the more interesting results of Knobe’s psychological experiments is the discovery that people may have a lower threshold for judging that lucky (or unskilled) actions are intentional when these actions are praiseworthy or blameworthy than they do for judging that equally lucky (or unskilled) morally neutral actions are intentional. In this paper I show that this discovery – when supplemented with some additional empirical data – gives us a way of shedding new light on a controversy that was sparked by Ronald Butler in 1977 when he posed the following problem to the readers of Analysis.