The physicist and philosophy

Journal for General Philosophy of Science - The central thesis of this paper is that physicists have as much to learn from scientifically oriented philosophy as philosophers have to learn from...     

Medical diagnostic reasoning: Epistemological modeling as a strategy for design of computer-based consultation programs

The complexity of cognitive emulation of human diagnostic reasoning is the major challenge in the implementation of computer-based programs for diagnostic advice in medicine. We here present an epistemological model of diagnosis with the ultimate goal of defining a high-level language for cognitive and computational primitives. The diagnostic task proceeds through three different phases: hypotheses generation, hypotheses testing and hypotheses closure. Hypotheses generation has the inferential form of abduction (from findings to hypotheses) constrained under the criterion of plausibility. Hypotheses testing is achieved by a deductive inference (from generated hypotheses to expected findings), followed by an eliminative induction, constrained under the criterion of covering, which matches expected findings against patient's findings to select the best explanation. Hypotheses closure is a deductive-inductive type of inference very similar to the inferences operating in hypotheses testing. In this case induction matches the consequences of the generated hypotheses against the patient's characteristics or preferences under the criterion of utility. By using the language exploited in this epistemological model, it is possible to describe the cognitive tasks underlying the most influential knowledge-based diagnostic systems.     

The Hubris Hypothesis: You Can Self-Enhance, But You'd Better Not Show It

We tested whether and why observers dislike individuals who convey self-superiority through blatant social comparison (the hubris hypothesis). Participants read self-superiority claims ("I am better than others"; Experiments 1-7), noncomparative positive claims ("I am good"; Experiments 1-2, 4), self-equality claims ("I am as good as others"; Experiments 3-4, 6), temporally comparative self-superiority claims ("I am better than I used to be"; Experiment 5), other-superiority claims ("S/he is better than others"; Experiment 6), and self-superiority claims accompanied by persistent disclaimers (Experiment 7). They judged the claim and the claimant (Experiments 1-7) and made inferences about the claimant's self-view and view of others (Experiments 4-7) as well as the claimant's probable view of them (Experiment 7). Self-superiority claims elicited unfavorable evaluations relative to all other claims. Evaluation unfavorability was accounted for by the perception that the claimant implied a negative view of others (Experiments 4-6) and particularly of the observer (Experiment 7). Supporting the hubris hypothesis, participants disliked individuals who communicated self-superiority beliefs in an explicitly comparative manner. Self-superiority beliefs may provoke undesirable interpersonal consequences when they are explicitly communicated to others but not when they are disguised as noncomparative positive self-claims or self-improvement claims.     

Validation of the Duke Religion Index: DUREL (Portuguese Version)

The purpose of the current study was to examine the psychometric properties of the Portuguese version of the Duke Religion Index (PDUREL) in a community setting. PDUREL was translated and adapted for administration to 383 individuals from a population-based study of low-income community-dwelling adults. The PDUREL intrinsic subscale and total scores demonstrated high internal consistency (alphas ranging from 0.733 for the total scale score to 0.758 for the intrinsic subscale). Correlations among the DUREL subscales were also examined for evidence of discriminant validity. Correlations were ranging from 0.36 to 0.46, indicating significant overlap between the scales without marked redundancy. PDUREL is a reliable and valid scale. The availability of a comprehensive, but brief measure of religiousness can help to study the role of religiousness in health by researchers from countries that speak the Portuguese language.     

Victim sensitivity and the accuracy of social judgments

Recent theorizing on the relation between victim sensitivity and unethical behavior predicts that victim sensitivity is related to an asymmetrical focus on cues associated with untrustworthiness compared to cues associated with trustworthiness. This hypothesis and its consequences for the accuracy of social predictions are investigated in this article. In Study 1, participants rated the trustworthiness of 35 computer-animated faces that differed in their emotional expression. People high in victim sensitivity rated neutral and hostile faces more untrustworthy than people low in victim sensitivity, whereas no such effect was found for friendly faces. In Study 2, participants predicted the cooperativeness of 56 targets on the basis of minimal information. The accuracy of predictions was negatively related to victim sensitivity, and people high in victim sensitivity systematically underestimated targets' cooperativeness. Thus, the asymmetrical focus on untrustworthiness cues among victim-sensitive individuals seems to impair rather than improve their social judgments.     

About the dark and bright sides of self-efficacy: workaholism and work engagement

Taking the Resources-Experiences-Demands Model (RED Model) by Salanova and colleagues as our starting point, we tested how work self-efficacy relates positively to negative (i.e., work overload and work-family conflict) and positive outcomes (i.e., job satisfaction and organizational commitment), through the mediating role of workaholism (health impairment process) and work engagement (motivational process). In a sample of 386 administrative staff from a Spanish University (65% women), Structural Equation Modeling provided full evidence for the research model. In addition, Multivariate Analyses of Variance showed that self-efficacy was only related positively to one of the two dimensions of workaholism, namely, working excessively. Finally, we discuss the theoretical and practical contributions in terms of the RED Model.     

The Silver Lining of Materialism: The Impact of Luxury Consumption on Subjective Well-Being

Materialism is a way of life characterized by the pursuit of wealth and possessions. Several studies have documented that a materialistic lifestyle is associated with diminished subjective well-being. In spite of this, many people continue to pursue materialistic goals rather than pursue goals that are more beneficial for their well-being. The current paper investigates one mechanism that may contribute to the continued pursuit of materialism. In particular, we propose that luxury consumption may reinforce a materialistic lifestyle. To test this possibility, we investigate the relations between luxury consumption, materialism and cognitive and affective subjective well-being aspects simultaneously, in a structural model. The results of a large scale survey in Dutch-speaking Belgium demonstrate that materialistic consumers are more inclined to consume luxury goods than less materialistic consumers. In addition, luxury consumption leads to enhanced positive mood, diminished negative mood and increased satisfaction with life. Furthermore, although the impact on negative and positive mood is not moderated by materialism, the impact of luxury consumption on satisfaction with life is more pronounced for materialistic consumers than for less materialistic consumers. Together, these results indicate that materialistic consumers not only engage more in luxury consumption than less materialistic consumers, but also benefit more from it (at least in the short run). As a result, luxury consumption may be more rewarding for the former than for the latter and consequently, ??lock in?? materialists in their lifestyle, irrespective of the long-term adverse consequences for self and society.