People of the Big Voice tells the visual history of Ho-Chunk families at the turn of the twentieth century and beyond as depicted through the lens of Black River Falls, Wisconsin studio photographer, Charles Van Schaick. The family relationships between those who “sat for the photographer” are clearly visible in these images—sisters, friends, families, young couples—who appear and reappear to fill in a chronicle spanning from 1879 to 1942. Also included are candid shots of Ho-Chunk on the streets of Black (...) River Falls, outside family dwellings, and at powwows. As author and Ho-Chunk tribal member Amy Lonetree writes, “A significant number of the images were taken just a few short years after the darkest, most devastating period for the Ho-Chunk. Invasion, diseases, warfare, forced assimilation, loss of land, and repeated forced removals from our beloved homelands left the Ho-Chunk people in a fight for their culture and their lives.” The book includes three introductory essays and 300-plus duotone photographs and captions in gallery style. Unique to the project are the identifications in the captions, which were researched over many years with the help of tribal members and genealogists, and include both English and Ho-Chunk names. (shrink)

Children often refer to things ambiguously but learn not to from responding to clarification requests. We review and explore this learning process here. In Study 1, eighty-four 2- and 4-year-olds were tested for their ability to request stickers from either (a) a small array with one dissimilar distracter or (b) a large array containing similar distracters. When children made ambiguous requests, they received either general feedback or specific questions about which of two options they wanted. With training, children learned to (...) produce more complex object descriptions and did so faster in the specific feedback condition. They also tended to provide more information when requesting stickers from large arrays. In Study 2, we varied only distracter similarity during training and then varied array size in a generalization test. Children found it harder to learn in this case. In the generalization test, 4-year-olds were more likely to provide information (a) when it was needed because distracters were similar to the target and (b) when the array size was greater (regardless of need for information). We discuss how clear cues to potential ambiguity are needed for children to learn to tailor their referring expression to context and how several cues of heuristic value (e.g., more distracters > say more) can promote the efficiency of communication while language is developing. Finally, we consider whether it would be worthwhile drawing on the human learning process when developing algorithms for the production of referring expressions. (shrink)

It is often assumed that engaging in a one‐on‐one dialogue with a tutor is more effective than listening to a lecture or reading a text. Although earlier experiments have not always supported this hypothesis, this may be due in part to allowing the tutors to cover different content than the noninteractive instruction. In 7 experiments, we tested the interaction hypothesis under the constraint that (a) all students covered the same content during instruction, (b) the task domain was qualitative physics, (c) (...) the instruction was in natural language as opposed to mathematical or other formal languages, and (d) the instruction conformed with a widely observed pattern in human tutoring: Graesser, Person, and Magliano's 5‐step frame. In the experiments, we compared 2 kinds of human tutoring (spoken and computer mediated) with 2 kinds of natural‐language‐based computer tutoring (Why2‐Atlas and Why2‐AutoTutor) and 3 control conditions that involved studying texts. The results depended on whether the students' preparation matched the content of the instruction. When novices (students who had not taken college physics) studied content that was written for intermediates (students who had taken college physics), then tutorial dialogue was reliably more beneficial than less interactive instruction, with large effect sizes. When novices studied material written for novices or intermediates studied material written for intermediates, then tutorial dialogue was not reliably more effective than the text‐based control conditions. (shrink)

In recent years the historical relationship between scientific experts and the state has received increasing scrutiny. Such experts played important roles in the creation and regulation of environmental organizations and functioned as agents dispatched by politicians or bureaucrats to assess health-related problems and concerns raised by the public or the judiciary. But when it came to making public policy, scientists played another role that has received less attention. In addition to acting as advisers and assessors, some scientists were democratically elected (...) members of local and national legislatures. In this essay I draw attention to this phenomenon by examining how liberal politicians and intellectuals used Darwinian cognitive science to conceptualize the education of children in Victorian Britain. (shrink)

The Anthropocene prompts renewed critical reflection on some of the central tenets of modern thought including narratives of ‘progress’, the privileging of the nation state, and the universalist rendering of the human. In this context it is striking that ‘rights’, a quintessentially modern mode of articulating normativity, are often presumed to have an enduring relevance in the contemporary moment, exemplified in renewed recourse to rights in their attribution to parts of the nonhuman world. Our intervention contemplates ways in which the (...) apparent disorientations of the Anthropocene might allow for a generative reorientation of some of these presuppositions. We critically consider the institutional and discursive limitations of rights and the ambivalence of rights language, and argue that the monism that rights so often implies limits the capacity to foster generative encounters between Indigenous and non-Indigenous legal traditions. We develop a critical discourse of obligation, understood here to both precede and exceed the rights-duty correlate so central to modern law. An attentiveness to the priority of obligation, we argue, might allow us to foreground an ethics of encounter between traditions, to examine the limits of modernity’s legal and political imaginary, and to pursue a ‘radical re-storying’ of laws for the Anthropocene. (shrink)

How do English‐speaking children inflect nouns for plurality and verbs for the past tense? We assess theoretical answers to this question by considering errors of omission, which occur when children produce a stem in place of its inflected counterpart (e.g., saying “dress” to refer to 5 dresses). A total of 307 children (aged 3;11–9;9) participated in 3 inflection studies. In Study 1, we show that errors of omission occur until the age of 7 and are more likely with both sibilant (...) regular nouns (e.g., dress) and irregular nouns (e.g., man) than regular nouns (e.g., dog). Sibilant nouns are more likely to be inflected if they are high frequency. In Studies 2 and 3, we show that similar effects apply to the inflection of verbs and that there is an advantage for “regular‐like” irregulars whose inflected form, but not stem form, ends in d/t. The results imply that (a) stems and inflected forms compete for production and (b) children generalize both product‐oriented and source‐oriented schemas when learning about inflectional morphology. (shrink)

Law and the Humanities: An Introduction brings together a distinguished group of scholars from law schools and an array of the disciplines in the humanities. Contributors come from the United States and abroad in recognition of the global reach of this field. This book is, at one and the same time, a stock taking both of different national traditions and of the various modes and subjects of law and humanities scholarship. It is also an effort to chart future directions for (...) the field. By reviewing and analyzing existing scholarship and providing thematic content and distinctive arguments, it offers to its readers both a resource and a provocation. Thus, Law and the Humanities marks the maturation of this 'law and' enterprise and will spur its further development. (shrink)

The ArgumentIn 1787 an anonymous student of the Perth Academy spent countless hours transforming his rough classroom notes into a beautifully inscribed notebook. Though this was an everyday practice for many Enlightenment students, extant notebooks of this nature are extremely rare and we know very little about how middle class children learned to inscribe and visualize knowledge on paper. This essay addresses this lacuna by using recently located student notebooks, drawings, and marginalia alongside textbooks and instructional literature to identify the (...) graphic tools and skills that were taught to Scottish children in early modern classrooms. I show that, in addition to learning the facts of the curriculum, students participated in educational routines that enabled them to learn how to visually package knowledge into accessible figures and patterns of information, thereby making acts of inscription and visualization meaningful tools that benefitted both the self and society. (shrink)

Keeping a conversation going is the social glue of friendships. The DSM criteria for autism list difficulties with back-and-forth conversation but does not necessitate that all autistic children will be equally impacted. We carried out three studies (two pre-registered) with verbally-fluent school children (age 5-9 years) to investigate how autistic and neurotypical children maintain a conversation topic. We also investigated within-group relationships between conversational ability and cognitive and socio-cognitive predictors. Study 1 found autistic children were more likely than neurotypical controls (...) to give off-topic and generic minimal responses (e.g. ‘mm’, ‘oh’) and were less likely to give non-verbal responses (e.g. nodding or use of facial affect to respond). Nonetheless, the autistic group provided topic-supporting responses 62% of the time, indicating some aspects of conversation topic maintenance are a relative strength. Studies 2 and 3 found large individual differences in topic-supporting conversational responding amongst both neurotypical and autistic children. These were positively related to theory of mind ability and age in both groups. Conversational skills lie on a continuum for the general population and differences by diagnostic group are a matter of degree. Given the importance for peer relationships, we suggest a whole-classroom approach to supporting conversation skills in all children. (shrink)

We examined participants' reading and recall of informed consent documents presented via paper or computer. Within each presentation medium, we presented the document as a continuous or paginated document to simulate common computer and paper presentation formats. Participants took slightly longer to read paginated and computer informed consent documents and recalled slightly more information from the paginated documents. We concluded that obtaining informed consent online is not substantially different than obtaining it via paper presentation. We also provide suggestions for improving (...) informed consent-in both face-to-face and online experiments. (shrink)

Wayfinding is defined as the ability to learn and remember a route through an environment. Previous researchers have shown that young children have difficulties remembering routes. However, very few researchers have considered how to improve young children's wayfinding abilities. Therefore, we investigated ways to help children increase their wayfinding skills. In two studies, a total of 72 5-year olds were shown a route in a six turn maze in a virtual environment and were then asked to retrace this route by (...) themselves. A unique landmark was positioned at each junction and each junction was made up of two paths: a correct path and an incorrect path. Two different strategies improved route learning performance. In Experiment 1, verbally labeling on-route junction landmarks during the first walk reduced the number of errors and the number of trials to reach a learning criterion when the children retraced the route. In Experiment 2, encouraging children to attend to on-route junction landmarks on the first walk reduced the number of errors when the route was retraced. This was the first study to show that very young children can be taught route learning skills. The implications of our results are discussed. (shrink)

Background: Studies have found that children with Autism Spectrum Disorder (ASD) are more likely to make errors in appropriately producing referring expressions (‘the dog’ vs. ‘the black dog’) than are controls but comprehend them with equal facility. We tested whether this anomaly arises because comprehension studies have focused on manipulating perspective-taking at a ‘generic speaker’ level. Method: We compared 24 autistic eight- to eleven-year-olds with 24 well-matched neuro-typical controls. Children interpreted requests (e.g. ‘Can I have that ball?’) in contexts which (...) would be ambiguous (i.e. because the child can see two balls) if perspective-taking were not utilized. In the interlocutor-specific perspective-taking condition, the target was the particular object which was new for the speaker. Children needed to take into account what the speaker had played with before and the fact that they were now expressing excitement about something new. In two control ‘speaker-generic’ conditions we tested children’s ability to take the visual perspective of the speaker (where any speaker who stood behind a particular barrier would have the same perspective). Results: The autistic group were significantly less likely to select the target and significantly more likely to request clarification in the ‘interlocutor-specific’ condition. Performance in the ‘interlocutor-generic’ (visual) perspective taking conditions did not differ between groups. Conclusion: Autistic children, even those who are not intellectually-impaired, tend to have more difficulty than neuro-typical peers in comprehending referring expressions when this requires understanding that people comment on what is new for them. (shrink)

In this article, we suggest that one of the unexplored paths toward collaboration between firms and civil society organizations starts with confrontation or potential conflict, and that the transition toward collaboration can be further understood if one focuses on triadic relationships rather than dyadic ones. We analyze the presence of third parties and their different roles to explain how collaboration is facilitated. The article aims at bringing together the bodies of research on business–civil society confrontation and on business–civil society collaboration. (...) It offers a comparative analysis of four case studies, and proposes a typology of third parties composed of facilitating allies, participating allies, mediators, and solution seekers. We conclude with some implications for further research as well as for practice. (shrink)

The celebrated career of a venerated scholar inspires incisive new contributions to the field of Indian and Tibetan Buddhism. Particularly known for his groundbreaking and influential work in Tibetan studies, Matthew Kapstein is a true polymath in Buddhist and Asian studies more generally; possessing unsurpassed knowledge of Tibetan culture and civilization, he is also deeply grounded in Sanskrit and Indology, and his highly accomplished work in these cultural and civilizational areas has exemplified a whole range of disciplinary perspectives. Reflecting (...) something of the astonishing range of Matthew Kapstein’s work and interests, this collection of essays pays tribute to a luminary in the field by exemplifying some of the diverse work in Buddhist and Asian studies that has been impacted by his scholarship and teaching. Engaging matters as diverse as the legal foundations of Tibetan religious thought, the teaching careers of modern Chinese Buddhists, the history of Bhutan, and the hermeneutical insights of Vasubandhu, these essays by students and colleagues of Matthew Kapstein are offered as testament to a singular scholar and teacher whose wide-ranging work is unified by a rare intellectual selflessness. (shrink)

Philosophy for Everyone begins by explaining what philosophy is before exploring the questions and issues at the foundation of this important subject. Key topics in this new edition and their areas of focus include: Moral philosophy – the nature of our moral judgments and reactions, whether they aim at some objective moral truth, or are mere personal or cultural preferences; and the possibility of moral responsibility given the sorts of things that cause behavior; Political philosophy – fundamental questions about the (...) nature of states and their relationship to the citizens within those states Epistemology – what our knowledge of the world and ourselves consists in, and how we come to have it; and whether we should form beliefs by trusting what other people tell us; Philosophy of mind – what it means for something to have a mind, and how minds should be understood and explained; Philosophy of science – foundational conceptual issues in scientific research and practice, such as whether scientific theories are true; and Metaphysics - fundamental questions about the nature of reality, such as whether we have free will, or whether time travel is possible. This book is designed to be used in conjunction with the free ‘Introduction to Philosophy’ MOOC created by the University of Edinburgh’s _Eidyn_ research centre, and hosted by the Coursera platform.This book is also highly recommended for anyone looking for a short overview of this fascinating discipline. (shrink)

States that are about things are intentional, that is, they have content. The precise nature of intentional states is a matter of dispute.What makes some states, but not others, intentional? Of those states that are intentional, what makes them about what they are about as opposed to something else, i.e. what gives them their specific content?

This book is about an emotion constantly present in human culture and history: fear. It is also a book about literature and medicine, two areas of human endeavour that engage with fear most acutely. The essays in this volume explore fear in various literary and medical manifestations, in the Western World, from medieval to modern times. It is divided into two parts. The first part, Treating Fear, examines fear in medical history, and draws from theology, medicine, philosophy, and psychology, to (...) offer an account of how fear shifts in Western understanding from the Middle Ages to Modern times. The second part, Writing Fear, explores fear as a rhetorical and literary force, offering an account of how it is used and evoked in distinct literary periods and texts. This coherent and fascinating collection will appeal to medical historians, literary critics, cultural theorists, medical humanities' scholars and historians of the emotions. (shrink)

Human moral judgement may have evolved to maximize the individual's welfare given parochial culturally constructed moral systems. If so, then moral condemnation should be more severe when transgressions are recent and local, and should be sensitive to the pronouncements of authority figures (who are often arbiters of moral norms), as the fitness pay-offs of moral disapproval will primarily derive from the ramifications of condemning actions that occur within the immediate social arena. Correspondingly, moral transgressions should be viewed as less objectionable (...) if they occur in other places or times, or if local authorities deem them acceptable. These predictions contrast markedly with those derived from prevailing non-evolutionary perspectives on moral judgement. Both classes of theories predict purportedly species-typical patterns, yet to our knowledge, no study to date has investigated moral judgement across a diverse set of societies, including a range of small-scale communities that differ substantially from large highly urbanized nations. We tested these predictions in five small-scale societies and two large-scale societies, finding substantial evidence of moral parochialism and contextual contingency in adults' moral judgements. Results reveal an overarching pattern in which moral condemnation reflects a concern with immediate local considerations, a pattern consistent with a variety of evolutionary accounts of moral judgement. (shrink)

This is a truly groundbreaking work that examines today’s notions of folk psychology. Bringing together disciplines as various as cognitive science and anthropology, the authors analyze and question key assumptions about the nature, scope and function of folk psychology.

In this book, leading Christian political thinkers and practitioners critique the Rawlsian concepts of “justice as fairness” and “public reason” from the perspective of Christian political theory and practice. It provides a new level of analysis from Christian perspectives, including implications for such hot topics as the culture war.

Across taxa, strength and size are elementary determinants of relative fighting capacity; in species with complex behavioral repertoires, numerous additional factors also contribute. When many factors must be considered simultaneously, decision-making in agonistic contexts can be facilitated through the use of a summary representation. Size and strength may constitute the dimensions used to form such a representation, such that tactical advantages or liabilities influence the conceptualized size and muscularity of an antagonist. If so, and given the continued importance of physical (...) strength in human male-male conflicts, a man’s own strength will influence his conceptualization of the absolute size and strength of an opponent. In the research reported here, male participants’ chest compression strength was compared with their estimates of the size and muscularity of an unfamiliar potential antagonist, presented either as a supporter of a rival sports team (Study 1, conducted in urban California, and Study 2, conducted in rural Fiji) or as a man armed with a handgun (Study 3, conducted in rural Fiji). Consistent with predictions, composite measures of male participants’ estimates of the size/strength of a potential antagonist were inversely correlated with the participant’s own strength. Therefore, consonant with a history wherein violent intrasexual selection has acted on human males, a man’s own physical strength influences his representations of potential antagonists. (shrink)

Why do we spend so much of our time passing on amusing anecdotes, making wisecracks,watching The Simpsons? In Inside Jokes, Matthew Hurley, DanielDennett, and Reginald Adams offer an evolutionary and cognitive perspective.

This article argues that considering cross-sector collaborations through the lens of indigenous-corporate engagements yields a more comprehensive understanding of the range of cross-sector engagement types, emphasizes the importance of cross-cultural bridge building which has received little attention in the literature :849–873, 2005), and highlights the potential for innovation via collaborations with fringe stakeholders. The study offers a more overarching typology of cross-sector collaborations and, building on an ethical approach to sustainable development with indigenous peoples, proposes a theoretical framework for cross-cultural (...) bridge building between businesses and fringe stakeholders. By incorporating this framework into the literature on value creation in cross-sector collaborations, we suggest a model for value creation in cross-sector collaborations with fringe stakeholders. Finally, using case studies to illustrate the article’s theoretical arguments, we demonstrate the model’s usefulness for the analysis and development of indigenous-corporate collaborations. (shrink)

We advance a theory of inductive inference designed to predict the conditional probability that certain natural categories satisfy a given predicate given that others do (or do not). A key component of the theory is the similarity of the categories to one another. We measure such similarities in terms of the overlap of metabolic activity in voxels of various posterior regions of the brain in response to viewing instances of the category. The theory and similarity measure are tested against averaged (...) probability judgments elicited from a separate group of subjects. Fruit serve as categories in the present experiment; results are compared to earlier work with mammals. (shrink)

Peterson et al. (2023) identify important ethical issues that are relevant to psychedelic therapy and research in various clinical populations and contexts. This is certainly the case in palliative...

PurposeThe purported benefits and risks of immediately sequential bilateral cataract surgery have been well described, yet the procedure remains controversial among UK ophthalmologists. As many of the controversies of ISBCS are underpinned by ethical dilemmas, the aim of this work was to explore the ethical perspectives of ISBCS from a variety of stakeholder viewpoints.MethodA semi-structured independent stakeholder meeting was convened at the Royal College of Ophthalmologists London headquarters in June 2018. In total, 29 stakeholders attended the meeting. The professional characteristics (...) of stakeholders included but were not limited to: ophthalmologists, patients, religious leaders, ethicists, lawyers and commissioners. Thematic qualitative analysis using methodology proposed by Braun and Clarke was conducted on the resultant transcript of the discussion.ResultsThemes identified include: beneficence and non-maleficence ; autonomy ; distributive justice.ConclusionThis analysis provides a reference point for the ethical factors surrounding ISBCS. The stakeholders concluded that this approach was an ethical undertaking provided patient autonomy was appropriately attained. This requires a patient’s interpretation of the risk-benefit balance, which must include an understanding of the low but unquantifiable risk of severe complications. A surgeon must aim to minimise risks through the adaption of accepted surgical protocols and by performing appropriate patient selection. Currently, cost savings to healthcare that may occur following the implementation of ISBCS should be considered a secondary benefit of the protocol. (shrink)

We advance a theory of inductive reasoning based on similarity, and test it on arguments involving mammal categories. To measure similarity, we quantified the overlap of neural activation in left Brodmann area 19 and the left ventral temporal cortex in response to pictures of different categories; the choice of of these regions is motivated by previous literature. The theory was tested against probability judgments for 40 arguments generated from 9 mammal categories and a common predicate. The results are interpreted in (...) the context of Hume’s thesis relating similarity to inductive inference. (shrink)

The target article argues that contempt is a sentiment, and that sentiments are the deep structure of social affect. The 26 commentaries meet these claims with a range of exciting extensions and applications, as well as critiques. Most significantly, we reply that construction and emergence are necessary for, not incompatible with, evolved design, while parsimony requires explanatory adequacy and predictive accuracy, not mere simplicity.

Contempt is typically studied as a uniquely human moral emotion. However, this approach has yielded inconclusive results. We argue this is because the folk affect concept “contempt” has been inaccurately mapped onto basic affect systems. “Contempt” has features that are inconsistent with a basic emotion, especially its protracted duration and frequently cold phenomenology. Yet other features are inconsistent with a basic attitude. Nonetheless, the features of “contempt” functionally cohere. To account for this, we revive and reconfigure thesentimentconstruct using the notion (...) of evolved functional specialization. We develop the Attitude–Scenario–Emotion (ASE) model of sentiments, in which enduring attitudes represent others' social-relational value and moderate discrete emotions across scenarios. Sentiments are functional networks of attitudes and emotions. Distinct sentiments, includinglove,respect,like,hate, andfear, track distinct relational affordances, and each is emotionally pluripotent, thereby serving both bookkeeping and commitment functions within relationships. The sentimentcontemptis an absence ofrespect; from cues to others' low efficacy, it represents them as worthless and small, mutingcompassion,guilt, andshameand potentiatinganger,disgust, andmirth. This sentiment is ancient yet implicated in the ratcheting evolution of human ultrasocialty. The manifolds of thecontemptnetwork, differentially engaged across individuals and populations, explain the features of “contempt,” its translatability, and its variable experience as “hot” or “cold,” occurrent or enduring, and anger-like or disgust-like. This rapprochement between psychological anthropology and evolutionary psychology contributes both methodological and empirical insights, with broad implications for understanding the functional and cultural organization of social affect. (shrink)

Although we are enthusiastic about a Darwinian approach to culture, we argue that the overview presented in the target article does not sufficiently emphasize the crucial explanatory role that psychology plays in the study of culture. We use a number of examples to illustrate the variety of ways by which appeal to psychological factors can help explain cultural phenomena.

Equality is typically presumed to be an end of justice; however, in this chapter, we argue that it is better understood as a condition of justice. Our argument draws on the Just World Fallacy, the phenomenon of people mistakenly believing fortuitous patterns of reward or harm to be reflective of justice. This phenomenon can undermine relationships of equality even where differences in reward or harm are ostensibly deserved. If everyone received equal pay, then the propensity for people to defer to (...) the more successful or derogate the less successful would be diminished, and thus there would be greater scope for people to enter into the sorts of relationships of equal respect and regard that just communities require. (shrink)

Psychiatry is rapidly adopting digital phenotyping and artificial intelligence/machine learning tools to study mental illness based on tracking participants’ locations, online activity, phone and text message usage, heart rate, sleep, physical activity, and more. Existing ethical frameworks for return of individual research results (IRRs) are inadequate to guide researchers for when, if, and how to return this unprecedented number of potentially sensitive results about each participant’s real-world behavior. To address this gap, we convened an interdisciplinary expert working group, supported by (...) a National Institute of Mental Health grant. Building on established guidelines and the emerging norm of returning results in participant-centered research, we present a novel framework specific to the ethical, legal, and social implications of returning IRRs in digital phenotyping research. Our framework offers researchers, clinicians, and Institutional Review Boards (IRBs) urgently needed guidance, and the principles developed here in the context of psychiatry will be readily adaptable to other therapeutic areas. (shrink)

Vingt-sept grands auteurs nous disent qui fut Bouddha et ce qu'est le bouddhisme aujourd'hui.

Inductive generalization, where people go beyond the data provided, is a basic cognitive capability, and it underpins theoretical accounts of learning, categorization, and decision making. To complete the inductive leap needed for generalization, people must make a key ‘‘sampling’’ assumption about how the available data were generated. Previous models have considered two extreme possibilities, known as strong and weak sampling. In strong sampling, data are assumed to have been deliberately generated as positive examples of a concept, whereas in weak sampling, (...) data are assumed to have been generated without any restrictions. We develop a more general account of sampling that allows for an intermediate mixture of these two extremes, and we test its usefulness. In two experiments, we show that most people complete simple one-dimensional generalization tasks in a way that is consistent with their believing in some mixture of strong and weak sampling, but that there are large individual differences in the relative emphasis different people give to each type of sampling. We also show experimentally that the relative emphasis of the mixture is influenced by the structure of the available information. We discuss the psychological meaning of mixing strong and weak sampling, and possible extensions of our modeling approach to richer problems of inductive generalization. (shrink)

We present evidence from a pre-registered experiment indicating that a philosophical argument––a type of rational appeal––can persuade people to make charitable donations. The rational appeal we used follows Singer’s well-known “shallow pond” argument (1972), while incorporating an evolutionary debunking argument (Paxton, Ungar, & Greene 2012) against favoring nearby victims over distant ones. The effectiveness of this rational appeal did not differ significantly from that of a well-tested emotional appeal involving an image of a single child in need (Small, Loewenstein, and (...) Slovic 2007). This is a surprising result, given evidence that emotions are the primary drivers of moral action, a view that has been very influential in the work of development organizations. We did not find support for our pre-registered hypothesis that combining our rational and emotional appeals would have a significantly stronger effect than either appeal in isolation. However, our finding that both kinds of appeal can increase charitable donations is cause for optimism, especially concerning the potential efficacy of well-designed rational appeals. We consider the significance of these findings for moral psychology, ethics, and the work of organizations aiming to alleviate severe poverty. (shrink)