The Logic Of Reliable And Efficient Inquiry

Journal of Philosophical Logic - This paper pursues a thorough-going instrumentalist, or means-ends, approach to the theory of inductive inference. I consider three epistemic aims: convergence to a...     

Minimal Belief Change and the Pareto Principle

This paper analyzes the notion of a minimal belief change that incorporates new information. I apply the fundamental decision-theoretic principle of Pareto-optimality to derive a notion of minimal belief change, for two different representations of belief: First, for beliefs represented by a theory – a deductively closed set of sentences or propositions – and second for beliefs represented by an axiomatic base for a theory. Three postulates exactly characterize Pareto-minimal revisions of theories, yielding a weaker set of constraints than the standard AGM postulates. The Levi identity characterizes Pareto-minimal revisions of belief bases: a change of belief base is Pareto-minimal if and only if the change satisfies the Levi identity (for “maxichoice” contraction operators). Thus for belief bases, Pareto-minimality imposes constraints that the AGM postulates do not. The Ramsey test is a well-known way of establishing connections between belief revision postulates and axioms for conditionals (“if p, then q”). Pareto-minimal theory change corresponds exactly to three characteristic axioms of counterfactual systems: a theory revision operator that satisfies the Ramsey test validates these axioms if and only if the revision operator is Pareto-minimal. This revised version was published online in June 2006 with corrections to the Cover Date.     

The Perceived Roles of Bullying in Small-Town Midwestern Schools

Middle and high school students (N=207) in small-town midwestern schools were surveyed regarding factors that motivate and sustain bullying. Students failed to endorse statements that bullying teaches about behavior unacceptable to the group and that making friends with a bullied person would result in lowering one's social status. Students agreed that victims brought it on themselves, teasing was mostly done in fun, and that bullying helps people by making them tougher. Girls, but not boys, tended to agree that bullies held higher social status than did victims.     

BALANCING THE RIGHT TO HABILITATION WITH THE RIGHT TO PERSONAL LIBERTIES: THE RIGHTS OF PEOPLE WITH DEVELOPMENTAL DISABILITIES TO EAT TOO MANY DOUGHNUTS AND TAKE A NAP

In the pursuit of efficient habilitation, many service providers exercise a great deal of control over the lives of clients with developmental disabilities. For example, service providers often choose the client's habilitative goals, determine the daily schedule, and regulate access to preferred activities. This paper examines the advantages and disadvantages of allowing clients to exercise personal liberties, such as the right to choose and refuse daily activities. On one hand, poor choices on the part of the client could hinder habilitation. On the other hand, moral and legal issues arise when the client's right to choice is abridged. Recommendations are offered to protect both the right to habilitation and the freedom to choose.     

IN-HOME GENERALIZATION OF SOCIAL INTERACTIONS IN FAMILIES OF ADOLESCENTS WITH BEHAVIOR PROBLEMS

The effects of a three-phase family communication program were evaluated. In the skill-teaching phase, family members were taught reciprocal social communication skills in a clinic setting. During the skill-review phase, each family member practiced the skills in their homes with the teacher. During the home-based family conference phase, each family was taught to use a structured format to resolve current family issues using their newly acquired skills. In-home parent-youth interactions were observed during a series of 1-hr sessions that involved directed and nondirected situations. Evaluation included a multiple baseline design across skills during the skill-teaching phase and a multiple baseline design across families for the family conference phase. Although the procedures of the skill-teaching phase resulted in parent-adolescent dyads learning to use the skills in the teaching setting, competent use of the skills in the home was not observed until the family conference phase was implemented. These results suggest the importance of home-based intervention if changes are to be obtained at home.     

TEACHING ADULTS WITH SEVERE AND PROFOUND RETARDATION TO EXIT THEIR HOMES UPON HEARING THE FIRE ALARM

Prompting, modeling, and differential reinforcement with client-chosen rewards were used to teach 3 nonverbal people with severe to profound mental retardation to exit their group homes at the sound of the house fire alarm, using a multiple baseline design. All 3 participants learned to exit independently in less than 2 min in all experimenter-initiated surprise fire drills and in the majority of staff-initiated surprise fire drills. Each participant was also able to exit from five areas of the house from which teaching was not done.     

Book reviews

Dharmakirti's Theory of Hetu‐centricity of Anumāna. MANGALA R. CHINCHORE, 1989 Delhi, Motilal Banarsidass i‐xvii+195 pp., Rs. 125.00

A Hindu Perspective on the Philosophy of Religion. ARVIND SHARMA, 1990 London, Macmillan 180 + xi pp., £35.00

Rationality and Mind in Early Buddhism. FRANK J. HOFFMAN, 1987 Delhi, Motilal Banarsidass 126 + xii pp., Rs. 75.00

Allah Transcendent: studies in the structure and semiotics of Islamic Philosophy, Theology and Cosmology. IAN RICHARD NETTON, 1989 London, Routledge 383 pp., £45.00

Moses Maimonides. Arabic Thought and Culture Series OLIVER LEAMAN, 1990 London and New York, Routledge 190 + xii pp., £30.00 hb, £9.99 pb     

Real-life outgroup exposure,self-reported outgroup contact and the other-race effect

People are better at recognizing faces from their own racial or ethnic group compared with faces from other racial or ethnic groups, known as the other-‘race’ effect (ORE). Several theories of the ORE assume that memory for other-race faces is impaired because people have less contact with members of other racial or ethnic groups, resulting in lower visual expertise. The present research investigates contact theories of the ORE, using self-report contact measures and objective measures of potential outgroup exposure (estimated from participants' residential location and from GPS tracking). Across six studies (total N = 2660), we observed that White American and White German participants displayed better memory for White faces compared with Black or Middle Eastern faces, whereas Black American participants displayed similarly equal or better memory for White compared with Black faces. We did not observe any relations between the ORE and objective measures of potential outgroup exposure. Only in Studies 2a and 2b, we observed very small correlations (rs = −.08 to .06) between 4 out of 30 contact measures and the ORE. We discuss methodological limitations and implications for theories of the ORE.     

Task engagement after mortality salience: The effects of creativity,conformity and connectedness on worldview defence

Terror management research has shown that activating thoughts about mortality (mortality salience) increases defence of one's worldview. This study investigated how worldview defence is affected by engaging in a task that fosters creativity, conformity, or sharing values after being reminded of death. After writing about death or a control topic, participants were randomly assigned to design a t‐shirt with the goal of being as creative as possible, trying to please others but not oneself, or trying to connect with others via shared values. After mortality salience, conforming to others led to increased worldview defence whereas sharing values did not. Further, engaging in a creative task decreased worldview defence after mortality salience. Implications for understanding the interface between different forms of social connectedness, creativity and the management of existential fears are discussed. Copyright © 2004 John Wiley & Sons, Ltd.     

The Urge to Splurge Revisited: Further Reflections on Applying Terror Management Theory to Materialism and Consumer Behavior

We respond to commentaries by Maheswaran and Agrawal (2004) and Rindfleisch and Burroughs (2004) on the application of terror management theory to understanding conspicuous consumption and consumer behavior. Specifically, we consider individual differences in terror management research; the possibility of cultural variation (or lack thereof) in terror management processes; the viability of materialism as a pathway to securing existential meaning; and the different and, at times possibly conflicting, motivations that may be evoked by the awareness of death.