Cooperation,ethnic salience and generalization of interethnic attitudes

This study compared the effectiveness of three theoretically-based conditions of intergroup cooperation in bringing about generalization of ethnic outgroup attitudes from a cooperation partner to the outgroup as a whole. Twenty-seven pairs of Dutch secondary school pupils were assigned at random to work together in triads to solve two word puzzles. The triads consisted of one Turkish pupil, always a confederate, and two Dutch pupils. The three conditions varied according to whether reference was made to the ethnic background of the confederate in both an introductory conversation and in the conversation-break between puzzles (High–High salience); only in the later break (Low–High); or not at all (Low–Low). Results show no differences between conditions in attitudes towards the partner, which were quite positive. However, attitude change only generalized in the two conditions in which ethnic membership was made salient (Low–High and High–High, which did not differ). These findings are discussed in terms of different models of intergroup contact, and how contact may actually work.     

The epistemic status of inter-item correlations in Eysenck's Personality Questionnaire: the a priori versus the empirical in psychological data

Judgements of the semantic relatedness of items in Eysenck's Personality Questionnaire and the corresponding inter-item correlations were found to be significantly related. The results are taken to indicate that the inter-item correlations are knowable a priori and, hence, are not empirical. It is also argued that the reported findings themselves are knowable a priori , and that the study, therefore, is pseudoempirical, that is, attempts to test necessarily true propositions empirically. The study was intended to demonstrate concretely the distinction between a priori and empirical in psychological data, and to indicate the confusion arising when that distinction is not made.     

Psychometric features related to the acute phase and final outcome of anorexia nervosa

The MMPI responses of a poor and good final outcome group from a follow-up study of anorexia nervosa were compared with responses of a group of anorexic patients in the acute phase. The poor outcome group produced elevated scores in the psychopathological range except on scales 4, 5 and 9. No elevations occurred in the good outcome group and the MMPI thus discriminated significantly between different kinds of final outcome of anorexia nervosa. The profile of the patients in the acute phase at time of testing was not significantly different from the poor outcome group profile. In order to improve the predictive validity of the MMPI related to anorexia nervosa, the paper points to possible directions for further research.     

Tool use by chimpanzees (Pan troglodytes) of the Arnhem Zoo community

Abstract: Chimpanzees have a large repertoire of tool-use behaviors. This study reports on the variety and the extent of tool use exhibited by the chimpanzees of the Arnhem Zoo community in The Netherlands, living in an enriched captive setting since 1971. The use of tools by 29 chimpanzees aged from 0 to 37 years was observed. We identified 13 types of tool use comparable to those found in the wild. Some of these types of tool use seem to be specific to this community, and can be explained by the ecological characteristics of this captive setting. Chimpanzees started to use tools from the age of 2 years. Young chimpanzees, from 5 to 9 years old, showed a greater repertoire of tool use than infants and adults. All types of tool use in the community have appeared by the age of 10, the age of puberty for chimpanzees. Multivariate analysis was applied for the 29 individuals by 13 types of tool use in a one-zero matrix. The results show two major categories of tool use, one in a practical or substantial context and the other in a nonpractical or play context. The subjects clustered into groups reflecting developmental stages, although there are great individual differences. In conclusion, this captive community provides a unique opportunity to clarify the details of tool use by chimpanzees.     

An application of a discriminant analysis, based on the weighted H-index—a reanalysis

Abstract.— A discriminant-analysis method for dichotomized data, based on the weighted H -index as the similarity measure between two persons, is introduced. The weight assigned each item is a strictly increasing function of the absolute value of its D -estimate. Here, only power functions are used. The method which is called the WHIDD-analysis, is applied to some clinical data (Jonsson, 1975). The power of 3 produces a correct classification of all 32 persons in the validation group.     

Bandura's theory of self-efficacy: A set of common sense theorems

Bandura's (1977) theory of self-efficacy is translated into non-technical language and is shown to consist of logically necessary rather than empirically testable statements. As an alternative to the dominant empiricist view, it is argued that valid theories in psychology are explications of conceptual relationship imbedded in ordinary language (common sense). This conceptual network is anterior to both observation and theorizing. The analogy between the tasks of pre-Euclidean geometry and contemporary psychology is explored. The tasks are seen as involving explication of our implicit concepts of respectively space and people. One consequence of the stated view is that much psychological research is pointless since it attempts to verify logically necessary statements by empirical methods.     

Length of the postfeedback interval and learning of probabilistic inference tasks

Learning of negative linear and J-shaped cue-criterion relations in single-cue learning tasks was studied in an experiment which varied the length of the postfeedback interval. Contrary to the predictions from a hypothesis construction model assuming that subjects construct hypotheses from the data provided by the task, there was no effect of the postfeedback interval. The results were interpreted to mean that the subjects' constructions are based on elements stored in memory, rather than on data from the task.     

Love,That Indispensable Supplement: Irigaray and Kant on Love and Respect

Is love essential to ethical life, or merely a supplement? In Kant's view, respect and love, as duties, are in tension with each other because love involves drawing closer and respect involves drawing away. By contrast, Irigaray says that love and respect do not conflict because love as passion must also involve distancing and we have a responsibility to love. I argue that love, understood as passion and based on respect, is essential to ethics.