Seeing structure: Shape skeletons modulate perceived similarity

An intrinsic part of seeing objects is seeing how similar or different they are relative to one another. This experience requires that objects be mentally represented in a common format over which such comparisons can be carried out. What is that representational format? Objects could be compared in terms of their superficial features (e.g., degree of pixel-by-pixel overlap), but a more intriguing possibility is that they are compared on the basis of a deeper structure. One especially promising candidate that has enjoyed success in the computer vision literature is the shape skeleton—a geometric transformation that represents objects according to their inferred underlying organization. Despite several hints that shape skeletons are computed in human vision, it remains unclear how much they actually matter for subsequent performance. Here, we explore the possibility that shape skeletons help mediate the ability to extract visual similarity. Observers completed a same/different task in which two shapes could vary either in their skeletal structure (without changing superficial features such as size, orientation, and internal angular separation) or in large surface-level ways (without changing overall skeletal organization). Discrimination was better for skeletally dissimilar shapes: observers had difficulty appreciating even surprisingly large differences when those differences did not reorganize the underlying skeletons. This pattern also generalized beyond line drawings to 3-D volumes whose skeletons were less readily inferable from the shapes’ visible contours. These results show how shape skeletons may influence the perception of similarity—and more generally, how they have important consequences for downstream visual processing.

     

Interpersonal effects of strategic and spontaneous guilt communication in trust games

A social partner’s emotions communicate important information about their motives and intentions. However, people may discount emotional information that they believe their partner has regulated with the strategic intention of exerting social influence. Across two studies, we investigated interpersonal effects of communicated guilt and perceived strategic regulation in trust games. Results showed that communicated guilt (but not interest) mitigated negative effects of trust violations on interpersonal judgements and behaviour. Further, perceived strategic regulation reduced guilt’s positive effects. These findings suggest that people take emotion-regulation motives into account when responding to emotion communication.     

Older adult research in the Journal of Counseling Psychology,The Counseling Psychologist,and Counselling Psychology Quarterly: A 15-year review and implications for research

In preparing for an aging global population, older adults’ well-being has become an urgent priority across the world. Counseling psychologists have also called upon the field for more empirical attention on older adults. Yet, a review of the literature revealed that older adults were represented in less than 2% of all the articles in the Journal of Counseling Psychology (JCP) and The Counseling Psychologist (TCP) from 1991 to 2000. The current study presents a follow-up review of older adult research in counseling psychology literature between 2001 and 2015 in the following mainstream journals: Counselling Psychology Quarterly (CPQ), JCP, and TCQ. Results suggest a decline in the past 15 years, with less than 1% of the total articles in JCP, TCP, and CPQ devoted to older adults. Most of the studies employed cross-sectional survey research design to examine predictors of mental health. A number of studies focused on culture-specific experiences of diverse older adults. Implications and suggestions for future research on older adult issues are discussed in relation to the principles and interests rooted in the field of counseling psychology.     

Counterfactual antecedent falsity and the epistemic sensitivity of counterfactuals

Why do utterances of counterfactual conditionals typically, but not universally, convey the message that their antecedents are false? I demonstrate that two common theoretical commitments–commitment to the existence of scalar implicature and of informative presupposition—can be supplemented with an independently motivated theory of the presuppositions of competing conditional alternatives to jointly predict this information when and only when it appears. The view works best if indicative and counterfactual conditionals have a closely related semantics, so I conclude by undermining two familiar arguments for a nonunified semantics of indicative and counterfactual conditionals.     

Collective action problems and conflicting obligations

Enormous harms, such as climate change, often occur as the result of large numbers of individuals acting separately. In collective action problems, an individual has so little chance of making a difference to these harms that changing their behavior has insignificant expected utility. Even so, it is intuitive that individuals in many collective action problems should not be parts of groups that cause these great harms. This paper gives an account of when we do and do not have obligations to change our behavior in collective action problems. It also addresses a question insufficiently explored in the literature on this topic: when obligations arising out of collective action problems conflict with other obligations, what should we do? The paper explains how to adjudicate conflicts involving two collective action problems and conflicts involving collective action problems and other sorts of obligations.     

Heroin Use among Adolescents: A Multi-Theoretical Examination

Criminological examination of substance use is common in the extant literature; however, little research has examined heroin use among adolescents. Recent trends in drug use indicate a rise of heroin among adolescents indicating a need to provide theoretical explanations of this phenomenon. This study examines the efficacy of social learning theory and social bond theory to explain heroin use. The study uses a nationally representative sample of adolescents from the Monitoring the Future Survey (N = 2,465). The results support the central arguments from social structure social learning theory. First, the results show that social structure components have links with heroin use. Second, the results show that social learning theory mediates the effect of social structure measures on heroin use. The results are discussed.     

The Death of Socrates

Abstract

In Phaedo, Plato shows the grace of a true courage which can affirm life even in death. Socrates’ courage is not that of the martyr, grounded on a belief in divine reward; his is the courage of the philosopher who knows that he does not know. In his self-reflexive striving to be a person who strives for wisdom, Socrates dissipates the fear of death by dissolving the presumption on which this fear is based, and reframing death as an opportunity for knowledge. Socrates’ courage is therefore founded on an epistemic hope that is embodied in the very activity of philosophy.