The psychophysics of spending

Several theories of decision making are based, in part, upon the principles of psychophysics (Kahneman and Tversky, 1979; Thaler, 1985). For example, due to the psychophysics of quantity, the difference between $10 and $20 seems greater than the difference between $110 and $120. To determine whether psychophysics influences consumers' decisions, subjects in four studies made real or hypothetical purchases. It was predicted that as the size of the purchase increased, subjects would be more willing to buy additional smaller items. Small extra purchases should seem like minor expenditures when they follow larger purchases. Results of the four studies supported our hypothesis. In addition, it was found that subjects responded not only to actual changes in purchase size but also to changes in the presentation or framing of a purchase.     

Reflections during a study on family therapy with drug addicts

This article presents ideas and reflections emerging during a project on family therapy with drug abusers. Initially inspired by the writings of Stanton and Todd on the subject, the project developed into a recursive and self-reflective process, characterized by increasing doubts about the usefulness of categorization of families, of pre-planning therapy, and of the therapist as an "expert." The limitations of approaches that emphasize the importance of understanding the family structure as the basis for changing it are discussed, particularly with respect to how they decrease therapist flexibility and may block the family's finding their own solution. Alternative approaches to practice and research are also discussed, bearing on ideas particularly formulated by theoreticians and practitioners inspired by second-order cybernetics.     

Men's perception of premenstrual changes on the premenstrual assessment form

Outcome research has shown that partner-spouse support can enhance the therapeutic outcome in a number of clinical problems. In the area of premenstrual tension, studies of treatment have apparently overlooked this issue of partners' support. This study was designed to address how men perceive premenstrual changes. 99 undergraduate men were asked whether they believed that women had premenstrual changes reflected on the 18 unipolar scales of the Premenstrual Assessment Form. Responses suggest that young men acknowledge that some women experience dysphoric features like hostility, mood swings, and low self-esteem as well as physical discomfort and behavioural changes. Clinical implications are outlined.     

Impact du type de buts et du sentiment d'auto-efficaciaté sur l'autorégulation et la performance dans une tâche cognitive

The aim of this study was to examine two hypotheses derived from theoretical models of the role of learning and performance goals in cognitive functioning. The first predicts that being highly focused on performance goals leads students to develop lower levels of self-efficacy than those who are less focused on performance. The second hypothesis predicts that the combination of high performance goals and low self-efficacy will have a negative impact on students' self-regulation and performance in a new task. After having filled out a questionnaire assessing their goals, 128 female students were met individually and asked to solve a verbal concept formation task. Self-efficacy was assessed prior to the resolution of the task during which self-regulation and performance were observed. Contrary to the first hypothesis, students having high performance goals were found to have higher self-efficacy than those having low goals. In addition, no interaction between self-efficacy and performance goals was found on self-regulation and performance on the task. The results showed that whatever students' goals, self-efficacy is a powerful determinant of self-regulation and performance. The discussion emphasizes the role of self-efficacy and the value of a motivational profile combining high concern for both performance and learning goals in cognitive functioning.