•  99
    Evolution, situationism, and virtue ethics
    Philosophical Studies. 2026.
    In this paper, we introduce an evolutionary perspective into the virtue ethics-situationism debate. Theories of indirect reciprocity have shown us that cooperation can evolve in populations if individuals cooperate selectively with those who have a reputation for cooperation. According to this account, the language of virtues was likely shaped by reputation tracking to stabilize cooperation, and virtuous dispositions were stabilized by the very language that picks them out (and their opposing vi…Read more
  •  1500
    Joshua Greene has argued that the empirical findings of cognitive science have implications for ethics. In particular, he has argued (1) that people’s deontological judgments in response to trolley problems are strongly influenced by at least one morally irrelevant factor, personal force, and are therefore at least somewhat unreliable, and (2) that we ought to trust our consequentialist judgments more than our deontological judgments when making decisions about unfamiliar moral problems. While m…Read more
  •  478
    Artificial intelligence can now recognize our emotions using algorithms that interpret our facial expressions. This technology is used to help assess an applicant’s interview performance, an individual’s potential for criminal behavior, whether a student is paying attention during an online class, and more. Assuming that such technology could reliably recognize human emotions, it nonetheless cannot assess whether an emotion is apt, which matters for how we ought to treat someone. Specifically, w…Read more
  •  317
    Robots, Wrasse, and the Evolution of Reciprocity
    In Martin Hähnel & Regina Müller (eds.), A Companion to Applied Philosophy of AI, Wiley-blackwell. pp. 211-223. 2025.
    Due to its prominent role in human sociality, robotics researchers have increasingly considered to what extent reciprocity might be important in human-robot interaction, and whether it should be included as a design feature in social robots. However, very little has been said of the original function of reciprocity. Indeed, evolutionary biology has revealed that reciprocity evolved to foster cooperation among human groups, yet this fact has for the most part remained unexplored in the robotics l…Read more
  •  590
    Dennis L. Krebs, Survival of the Virtuous: How We Became a Moral Animal (review)
    The Philosophical Review 134 (1): 96-100. 2025.
    In his book Survival of the Virtuous, Dennis Krebs explores the origins of human morality. His approach is decidedly evolutionary. Indeed, he contends that the key to understanding our moral nature is considering the adaptive functions of our moral traits. He does acknowledge the importance of cultural and psychological explanations in filling in some of the particulars, but he argues that such accounts can only get us so far if we want to understand the ultimate underpinnings of morality. We ar…Read more
  •  872
    Thomas Hurka’s recursive account of value appeals to certain intuitions to expand the class of intrinsic values, placing concepts of virtue and desert within the realm of second and third order intrinsic goods, respectively. This is a formalization of a tradition of thought extending back to Aristotle and Kant via the British moralists, G. E. Moore, and W. D. Ross. However, the evidential status of such intuitions vis a vis the real, intrinsic value of virtue and desert is hostage to alternative…Read more
  •  925
    One way to interpret the work of Joshua Greene (2001; 2008; 2014) is that the wave of empirical research into moral decision-making is a way for us to become more confident in our ability to gain moral knowledge. We argue that empirical research into moral judgment has shown (both survey-based and brain-based) that the grounds of moral judgment are opaque on several dimensions. We argue that we cannot firmly grasp what the morally relevant/irrelevant features of a decision context are, understan…Read more
  •  1601
    Moral-Dilemma Judgments
    with Bertram Gawronski and Nyx Ng
    In Simon Laham (ed.), Handbook of Ethics and Social Psychology, Edward Elgar Publishing. 2025.
    The current chapter provides an overview of research on responses in moral dilemmas where maximization of outcomes for the greater good (utilitarianism) conflicts with adherence to moral norms (deontology). Expanding on a description of the traditional paradigm to study moral-dilemma judgments (i.e., the trolley problem), the chapter reviews the most prominent dual-process account of moral-dilemma judgments, normative conclusions that have been derived from this account, and criticisms raised ag…Read more
  •  1318
    Social Robots and Society
    with Sven Nyholm, Cindy Friedman, Anna Puzio, Dina Babushkina, Guido Lohr, Bart Kamphorst, Arthur Gwagwa, and Wijnand IJsselsteijn
    In Ibo van de Poel (ed.), Ethics of Socially Disruptive Technologies: An Introduction, Open Book Publishers. pp. 53-82. 2023.
    Advancements in artificial intelligence and (social) robotics raise pertinent questions as to how these technologies may help shape the society of the future. The main aim of the chapter is to consider the social and conceptual disruptions that might be associated with social robots, and humanoid social robots in particular. This chapter starts by comparing the concepts of robots and artificial intelligence and briefly explores the origins of these expressions. It then explains the definition of…Read more
  •  1180
    Over the last few decades, virtue has become increasingly important in philosophy, psychology, cognitive science, and education. However, as each of these disciplines approaches virtue from a decidedly different perspective, it has proven difficult to come up with an understanding of virtue that satisfies the standards of all four disciplines. In their book, Jennifer Wright, Michael Warren, and Nancy Snow attempt to put forward such an understanding.
  •  222
    Ownership psychology and group size
    Behavioral and Brain Sciences 46. 2023.
    Human group size seemingly has no limit, with many individuals living alongside thousands – even millions – of others. Non-human primate groups, on the other hand, cannot be sustained past a certain, relatively small size. I propose that Pascal Boyer's model of ownership psychology may offer an explanation for such a significant divergence.
  •  1139
    The evolution of moral belief: support for the debunker’s causal premise
    History and Philosophy of the Life Sciences 44 (2): 1-18. 2022.
    The causal premise of the evolutionary debunking argument contends that human moral beliefs are explained by the process of natural selection. While it is universally acknowledged that such a premise is fundamental to the debunker’s case, the vast majority of philosophers focus instead on the epistemic premise that natural selection does not track moral truth and the resulting skeptical conclusion(s). Recently, however, some have begun to concentrate on the causal premise. So far, the upshot of …Read more
  •  1901
    Neurons and normativity: A critique of Greene’s notion of unfamiliarity
    Philosophical Psychology 33 (8): 1072-1095. 2020.
    In his article “Beyond Point-and-Shoot Morality,” Joshua Greene argues that the empirical findings of cognitive neuroscience have implications for ethics. Specifically, he contends that we ought to trust our manual, conscious reasoning system more than our automatic, emotional system when confronting unfamiliar problems; and because cognitive neuroscience has shown that consequentialist judgments are generated by the manual system and deontological judgments are generated by the automatic system…Read more
  •  910
    Cultural variation in cognitive flexibility reveals diversity in the development of executive functions
    with Cristine Legare, Sarah Kim, and Gedeon Deak
    Nature Scientific Reports 8 (16326): 1-14. 2018.
    Cognitive flexibility, the adaptation of representations and responses to new task demands, improves dramatically in early childhood. It is unclear, however, whether flexibility is a coherent, unitary cognitive trait, or is an emergent dimension of task-specific performance that varies across populations with divergent experiences. Three-to 5-year-old English-speaking U.S. children and Tswana-speaking South African children completed two distinct language-processing cognitive flexibility tests: …Read more
  •  840
    The sexual selection of hominin bipedalism
    Ideas in Ecology and Evolution 11 (1): 47-60. 2018.
    In this article, I advance a novel hypothesis on the evolution of hominin bipedalism. I begin by arguing extensively for how the transition to bipedalism must have been problematic for hominins during the Neogene. Due to this and the fact that no other primate has made the unusual switch to bipedalism, it seems likely that the selection pressure towards bipedalism was unusually strong. With this in mind, I briefly lay out some of the most promising hypotheses on the evolutionary origin of homini…Read more