Rodrigo Díaz

Human emotional expressions can communicate the emotional state of the expresser, but they can also communicate appeals to perceivers. For example, sadness expressions such as crying request perceivers to aid and support, and anger expressions such as shouting urge perceivers to back off. Some contemporary artificial intelligence (AI) systems can mimic human emotional expressions in a (more or less) realistic way, and they are progressively being integrated into our daily lives. How should we respond to them? Do we have reasons to reply to the appeals made by AI emotional expressions? In this paper, we examine the conditions under which AI emotional expressions could give us prudential or even moral reasons to change our behavior. We argue that these conditions do not depend on whether the emotional expression is genuine or not, but rather on the presence of features some of which can be implemented in emotive AI given our current level of technological development. We extract recommendations and warnings for the development of emotive AI.

Are feelings an essential part or aspect of emotion? Cases of unconscious emotion suggest that this is not the case. However, it has been claimed that unconscious emotions are better understood as either (a) emotions that are phenomenally conscious but not reflectively conscious, or (b) dispositions to have emotions rather than emotions proper. Here, I argue that these ways of accounting for unconscious emotions are inadequate, and propose a view of emotions as non-phenomenal attitudes that regard their contents as relevant to one's motivations.

Do moral beliefs motivate action? To answer this question, extant arguments have considered hypothetical cases of association (dissociation) between agents’ moral beliefs and actions. In this paper, I argue that this approach can be improved by studying people’s actual moral beliefs and actions using empirical research methods. I present three new studies showing that, when the stakes are high, associations between participants’ moral beliefs and actions are actually explained by co-occurring but independent moral emotions. These findings suggest that moral beliefs themselves have little or no motivational force, supporting the Humean picture of moral motivation.

Evaluative judgments imply positive or negative regard. But there are different ways in which something can be positive or negative. How do we tell them apart? According to Evaluative Sentimentalism, different evaluations (e.g., dangerousness vs. offensiveness) are grounded on different emotions (e.g., fear vs. anger). If this is the case, evaluation differentiation requires emotional awareness. Here, we test this hypothesis by looking at alexithymia, a deficit in emotional awareness consisting of problems identifying, describing, and thinking about emotions. The results of Study 1 suggest that high alexithymia is not only related to problems distinguishing emotions, but also to problems distinguishing evaluations. Study 2 replicated this latter effect after controlling for individual differences in attentional impulsiveness and reflective reasoning, and found that reasoning makes an independent contribution to evaluation differentiation. These results suggest that emotional sensibilities play an irreducible role in evaluative judgment while affording a role for reasoning.

Are emotions bodily feelings or evaluative cognitions? What is happiness, pain, or “being moved”? Are there basic emotions? In this chapter, I review extant empirical work concerning these and related questions in the philosophy of emotion. This will include both (1) studies investigating people’s emotional experiences and (2) studies investigating people’s use of emotion concepts in hypothetical cases. Overall, this review will show the potential of using empirical research methods to inform philosophical questions regarding emotion.

In emotion research, both conceptual analyses and empirical studies commonly rely on emotion reports. But what do people mean when they say that they are angry, afraid, joyful, etc.? Building on extant theories of emotion, this paper presents four new studies (including a pre-registered replication) measuring the weight of cognitive evaluations, bodily changes, and action tendencies in people’s use of emotion concepts. The results of these studies suggest that the presence or absence of cognitive evaluations has the largest impact on people’s emotion attributions, and that bodily changes and action tendencies are considered to depend on cognitive evaluations. Implications for theories of emotion (concepts) and the interpretation of emotion reports are discussed.

Can we experience emotion without the feeling of accelerated heartbeats, perspiration, or other changes in the body? In his paper “What is an emotion”, William James famously claimed that “if we fancy some strong emotion and then try to abstract from our consciousness of it all the feelings of its bodily symptoms, we find we have nothing left behind” (1884, p. 193). Thus, bodily changes are essential to emotion. This is known as the Subtraction Argument. The Subtraction Argument is still used to support Embodied theories of emotion. Proponents of Disembodied theories, however, have different intuitions regarding the role of bodily changes in the experience of emotion. In order to advance this debate, I conducted a series of studies testing people’s intuitions regarding the Subtraction Argument. Results show that, against James’ claims, most people consider that their hypothetical (Study 1) and actual (Study 2) emotions persist in the absence of bodily feelings. Furthermore, Study 1 found that participants’ responses were not related to individual differences in reflection or interoceptive awareness. These results pose a problem for Embodied theories of emotion and challenge extant explanations for the persistence of emotional experience in cases of impaired interoception.

Emergency situations require individuals to make important changes in their behavior. In the case of the COVID-19 pandemic, official recommendations to avoid the spread of the virus include costly behaviors such as self-quarantining or drastically diminishing social contacts. Compliance (or lack thereof) with these recommendations is a controversial and divisive topic, and lay hypotheses abound regarding what underlies this divide. This paper investigates which cognitive, moral, and emotional traits separate people who comply with official recommendations from those who don't. In four studies (three pre-registered) on both U.S. and French samples, we found that individuals' self-reported compliance with official recommendations during the COVID-19 pandemic was partly driven by individual differences in moral values, disgust sensitivity, and psychological reactance. We discuss the limitations of our studies and suggest possible applications in the context of health communication.

In a recent paper in this journal, David Chalmers introduced the meta-problem of consciousness as “the problem of explaining why we think consciousness poses a hard problem” (Chalmers, 2018, p. 6). A solution to the meta-problem could shed light on the hard problem of consciousness. In particular, it would be relevant to elucidate whether people’s problem intuitions (i.e. intuitions holding that conscious experience cannot be reduced to physical processes) are driven by factors related to the nature of consciousness, or rather by factors that are independent of consciousness. Whether people hold problem intuitions, and what factors drive those intuitions, are largely empirical questions. However, there is a lack of empirical research on these issues to date. The results of four studies will show that (1) problem intuitions are not widespread, and (2) when they arise, they do so because of factors that are unrelated to the nature of consciousness. This suggests that consciousness is, after all, not so problematic.

It is generally assumed that emotion concepts are purely descriptive. However, recent investigations suggest that the concept of happiness includes information about the morality of the agent's life. In this study, we argue that normative influences on emotion concepts are not restricted to happiness and are not about moral norms. In a series of studies, we show that emotion attribution is influenced by whether the agent's psychological and bodily states fit the situation in which they are experienced. People consider that emotions are not just about feeling in certain ways, but also about feeling the right way.

Testimonial injustices occur when individuals from particular social groups are systematically and persistently given less credibility in their claims merely because of their group identity. Recent “pluralistic” approaches to folk psychology, by taking into account the role of stereotypes in how we understand others, have the power to explain how and why cases of testimonial injustice occur. If how we make sense of others’ behavior depends on assumptions about how individuals from certain groups think and act, this can explain why speakers are given different degrees of credibility depending on their group identity. For example, if people assume that women are more emotional than men, they will systematically give less credibility to women’s claims. This explanation involves three empirical claims: people assume that women are more emotional than men, people assume that emotionality hinders credibility, and people give less credibility to women’s claims. While extant studies provide some support for and, no study to date has directly tested. In two different studies, we tested all these three claims. The results from both studies provide support for, as we found significant negative correlations between emotionality and credibility attributions. However, in contrast to what some accounts of folk psychology posit, we did not find any significant difference in people’s attributions of emotionality and credibility towards women versus men speakers. We hope that our studies here pave the way for further empirical studies testing the phenomenon of testimonial injustice in a context-sensitive way, in order to have a better understanding of the conditions in which testimonial injustices are likely to happen.

This chapter analyses the prospects of using neuroimaging methods, in particular functional magnetic resonance imaging (fMRI), for philosophical purposes. To do so, it will use two case studies from the field of emotion research: Greene et al. (2001) used fMRI to uncover the mental processes underlying moral intuitions, while Lindquist et al. (2012) used fMRI to inform the debate around the nature of a specific mental process, namely, emotion. These studies illustrate two main approaches in cognitive neuroscience: Reverse inference and ontology testing, respectively. With regards to Greene et al.’s study, the use of Neurosynth (Yarkoni 2011) will show that the available formulations of reverse inference, although viable a priori, seem to be of limited use in practice. On the other hand, the discussion of Lindquist et al.’s study will present the so far neglected potential of ontology-testing approaches to inform philosophical questions.

Research has consistently shown that people consider harmful side effects of an action more intentional than helpful side effects. This phenomenon is known as the side- effect effect (SEE), which refers to the influence of moral considerations in judgments of intentionality and other non-moral concepts. There is an ongoing debate about how to explain this asymmetric pattern of judgment and the psychological factors involved in it. It has been posited that affective reactions to agents that bring about harmful side- effects could bias intentionality attributions in these cases, explaining the asymmetric pattern of intentionality judgments that we observe in the SEE. We call this the affective bias hypothesis (ABH). Evidence for the ABH is mixed, with some findings suggesting a role for affective processes, while others suggesting that affective processes play no role in the SEE. A possible explanation for these apparently contradictory results points to affective processes involved in the SEE being confined to anger. In a series of empirical studies, we systematically measured and manipulated participants’ anger in order to test this possibility. Our findings suggest that anger play no role in intentionality judgments in SEE cases, while providing support for a non-emotional motivation to blame as a factor underlying the SEE.

Responding to recent concerns about the reliability of the published literature in psychology and other disciplines, we formed the X-Phi Replicability Project to estimate the reproducibility of experimental philosophy. Drawing on a representative sample of 40 x-phi studies published between 2003 and 2015, we enlisted 20 research teams across 8 countries to conduct a high-quality replication of each study in order to compare the results to the original published findings. We found that x-phi studies – as represented in our sample – successfully replicated about 70% of the time. We discuss possible reasons for this relatively high replication rate in the field of experimental philosophy and offer suggestions for best research practices going forward.