Overcoming the winner's curse: an adaptive learning perspective

The winner's curse phenomenon refers to the fact that the winner in a common value auction, in order to actually win the auction, is likely to have overestimated the item's value and consequently is likely to gain less than expected and may even lose (i.e., it is said to be “cursed”). Past research, using the “Acquiring a company” task has shown that people do not overcome this bias even after they receive extensive feedback. We suggest that the persistence of the winner's curse is due to a combination of two factors: variability in the environment that leads to ambiguous feedback (i.e., choices and outcomes are only partially correlated) and the tendency of decision makers to learn adaptively. We show in an experiment that by reducing the variance in the feedback, performance can be significantly improved. Copyright © 2007 John Wiley & Sons, Ltd.     

Fairness and bargaining power in threshold public goods experiments

Experiments on three two‐person threshold public good provision games, namely, the simultaneous, sequential, and dictator games, are conducted to explore the motives behind giving. Players who move simultaneously are endowed with equal bargaining power, and players who move first are endowed with more bargaining power than players who move subsequently. Dictators are indubitably endowed with complete bargaining power. Since the differences between the bargaining powers of two players increase from the simultaneous to the sequential to the dictator game, comparisons among games allow us to trace whether the contribution behavior is motivated by fairness or is simply due to the strategic concern. The experimental evidence shows that the strategic concern explains the overall contribution behavior better than the motive of fairness. However, in the final round 26% of the dictators share the threshold evenly with their opponents, suggesting that some subjects do play fairly. Copyright © 2007 John Wiley & Sons, Ltd.     

Dissolving the diaspora: Dialogical practice in the development of deep multiculturalism

This article is an exposition of deep or critical multiculturalism that is grounded in a mutually respectful dialogue. Such multiculturalism names historical oppressions, recognizes the structural causes of injustice and inequality, and is profoundly open to cultural critique, challenge and change. In order to promote such a multicultural practice, the article makes the case for a dialogical politics of deep and mutual respect in which ethno‐religious sensibilities are validated and welcomed in their rich diversity. In doing so, the article draws upon the author's empirical research on the Muslim minority in contemporary Canada. Copyright © 2008 John Wiley & Sons, Ltd.     

Mechanical restraints as positive reinforcers for aggression

Research suggests that, in some cases, mechanical restraints may function as positive reinforcers. In this study, we conducted a functional analysis of severe aggression exhibited by an individual with a history of wearing arm splints. The results of this functional analysis demonstrated that his aggression was maintained by access to the arm splints. Copyright © 2008 John Wiley & Sons, Ltd.     

What Am I? Virtual Machines and the Mind/Body Problem

When your word processor or email program is running on your computer, this creates a “virtual machine” that manipulates windows, files, text, etc. What is this virtual machine, and what are the virtual objects it manipulates? Many standard arguments in the philosophy of mind have exact analogues for virtual machines and virtual objects, but we do not want to draw the wild metaphysical conclusions that have sometimes tempted philosophers in the philosophy of mind. A computer file is not made of epiphenomenal ectoplasm. I argue instead that virtual objects are “supervenient objects.” The stereotypical example of supervenient objects is the statue and the lump of clay. To this end I propose a theory of supervenient objects. Then I turn to persons and mental states. I argue that my mental states are virtual states of a cognitive virtual machine implemented on my body, and a person is a supervenient object supervening on this cognitive virtual machine.     

In the Name of the Father, the Son and the Holy Spirit: A Critical Reflection on the Trinitarian Theologies of Religion of S. Mark Heim and Gavin D'Costa

Abstract:  S. Mark Heim and Gavin D'Costa are two significant contemporary authors grounding a theology of religions in the doctrine of the Trinity. This article critically examines their respective interpretations of the doctrine of the Trinity, and their deployment of this doctrine in appreciation of religious difference. Heim, in his attempt to provide a theological validation for the world religions, departs from more traditional formulations of the Trinity. Ironically, this departure means that he fails to describe the world religions in their own particularity, that is, as they would describe themselves. D'Costa, by contrast, maintains a sound trinitarian position, and raises the question of Christian responsibility toward the world religions from precisely this theological grounding. He does not conceptualize the religions within a theological framework, but does demonstrate that engagement with the religions constitutes an obedient ecclesial response to the Trinity.     

Experimental analysis of preschool playmate preferences as a function of smiles and sex

Differential emotions theory (DET) (The face of emotion. Appleton‐Century‐Crofts: East Norwalk, CT, 1971) posits that the smile functions in part to communicate and/or reflect social affiliation and plays an important role in children's social development. While children's positive emotion expressions have received attention from peer relations researchers in observational studies and within correlational designs, there is almost no experimental evidence for the impact of the smile. Building on existing studies, the present study examined DET predictions within an experimental design. More specifically, we examined the impact smiles have on lower‐income preschool children's nominations for preferred playmates. Both boys and girls tended to nominate unfamiliar playmates who smiled. Additionally, some evidence suggested that preference for smiling playmates seemed more critical to girls' than boys' social functioning. Unlike among boys, teachers rated girls who exhibited a greater preference for smiling playmates as higher in social competence. Copyright © 2008 John Wiley & Sons, Ltd.     

Associations between mothers' sensitivity to their infants' internal states and children's later understanding of mind and emotion

This study investigated associations between mother–infant interactions and children's subsequent understanding of mind and emotion. Mothers' tendency to comment on their infants' internal world and their general sensitivity to their infants' internal states were measured through coded play interactions at 10 months. The latter measurement included ratings on four aspects of maternal behaviour: mindful facilitation, joint attention commenting, pacing, and affect catching. In contrast to mothers' internal state language, these behaviours did not tap mothers' explicit linguistic representation of their infants' mental states. At 54 months, children's understanding of mind and emotion was measured through a range of false‐belief tasks and an emotion‐understanding task. Multivariate analysis revealed direct positive links between mothers' sensitivity to their infants' internal states and children's later understanding of mind. Copyright © 2008 John Wiley & Sons, Ltd.     

Definitions and Evaluation of Religion and Spirituality Items by Religious Professionals: A Pilot Study

In an effort to clarify the concepts of religion and spirituality religious professionals (Imams, Ministers, Priests, and Rabbis) defined the terms religion and spirituality and responded to whether the concepts religion and spirituality were different (i.e. non-overlapping), the same, or overlapping. Additionally, they rated each item from the five measures (purportedly to assess religion or spirituality) for the extent to which the items assess the construct of religion and/or spirituality. Content analysis of definitions revealed religion as objective, external, and ritual or organizational practices that one performs in a group setting and that guide one’s behavior; while spirituality was defined as internal, subjective, and divine experience or direct relationship with God. Primarily the concepts were viewed as overlapping. Analysis for item ratings revealed few within group differences and relatively few between group differences for ratings of item relevance to assess religion and spirituality. Factor analysis of item ratings revealed one factor named religion/spirituality.Corine Hyman, M.S., is a Ph.D. candidate in clinical psychology at Saint Louis University. Her research interests include religion, spirituality, anxiety, and depressive disorders, minority issues, PTSD, and test development.Paul J. Handal received his Ph.D. degree from Saint Louis University in clinical psychology in 1969. His interests have included education and training of clinical psychologists as director of the clinical program at Saint Louis University from 1973 until 1993. Additional interests include research in the area of psychology and religion and its relationship to adjustment and health in adolescence and adults. Correspondence to Dr. Paul J. Handalm, handalpj@slu.edu.