Effects of dehydroepiandrosterone sulfate and progesterone on spatial learning and memory in young and aged mice

Young (2-4 months) and aged (14-16 months) male Swiss-Webster albino mice (n = 7 per group) were subcutaneously injected with 20 mg/kg/day dehydroepiandrosterone sulfate (DHEAS), progesterone (P), DHEAS + P, or vehicle control and trained over a 5-day period in a Morris water maze. The subjects were tested 48 hr after training for memory recall as measured by latencies to locate the hidden platform, and trunk blood was collected immediately thereafter. As expected, latency to platform decreased for all groups over the 6 testing days, with aged mice taking longer to reach platform than did young mice. However, results did not support the hypotheses that DHEAS-treated mice would exhibit shorter latencies and that P-treated mice would show longer latencies to platform in comparison with age-matched controls. These results raise doubts about the effectiveness of commercially available supplements claiming to promote enhanced memory in humans.     

Hindsight bias in insight and mathematical problem solving: Evidence of different reconstruction mechanisms for metacognitive versus situational judgments

This article presents two experiments that used insight and mathematical problems to investigate whether different factors would affect hindsight bias on metacognitive and situational judgments. In both studies, participants initially rated their likelihood of solving each problem within a certain amount of time (metacognitive judgments) and rated the importance of each component of the problem for finding the solution (situational judgments). Next, participants attempted to solve each problem. In Experiment 1, all participants were given solution feedback information, but in Experiment 2, participants were not given any solution feedback. After 1 week, participants were asked to recall their original judgments. Hindsight bias was assessed by comparing the initial with the final ratings. Insight problems and math problems showed different patterns of hindsight bias effects on the metacognitive and situational judgments. The results suggest that two competing models of hindsight effects are actually complementary explanations for judgment reconstruction on different types of judgment tasks.     

Psychoeducational Interventions with Pediatric Cancer Patients: Part I. Patient Information and Knowledge

We present a systematic review of published research on psychoeducational interventions for children with cancer. The current lack of an organizational model for this literature makes it difficult to form a coherent picture of the scattered literature and draw nomothetic conclusions. A model is described that is based on functional concepts from the literature on learning and instructional design. It is argued that it makes sense conceptually to analyze psychoeducational interventions in terms of psychoeducational principles, especially if the purpose is to illuminate the learning processes involved. Three categories of intervention are distinguished and the first of these, informational interventions to influence patient knowledge, is considered in this paper, and the other two categories will be reviewed in a subsequent paper. This review is organized by categories of information needs, intervention modes, and major types of independent variables. We concluded that the research supports few generalizable conclusions at this time, except that development of health-related knowledge in children is best accomplished by information transfer methods that are highly interactive and individualized. Interactive multimedia formats such as video games are seen as having the best potential, but further research is required.     

The Interaction of Emotional Valence and Arousal on Attentional Breadth and Creative Task Performance

Within the literature, there are two opposing views regarding the influencing role of emotions on the creative process. The most commonly held view contends that positive emotions enhance creativity and negative emotions stifle it; yet, some studies show an opposite trend. These contradictory findings can be explained by examining two aspects of the emotions: attention and creativity relationship. First, emotional valence and arousal levels interact to affect attention. Second, creativity is not a unitary cognitive process and some stages rely more on focused attention but others are aided by diffused or broad attention. To test this proposition, two experiments were conducted. In Experiment 1, valence (positive vs. negative) and arousal (high vs. low) were manipulated and participants completed a series of attention and creativity tasks. Experiment 2 employed similar emotion induction procedure, but a different set of creative problems was used. The results of both experiments were consistent with the proposed explanation of the effects of emotions on creativity.     

A cognitive map of Slovenia: Perceptions of the regions

Cognitive maps present an important theoretical concept and methodological tool for the acquirement of insight into the mental image of the environment. Part of the study, conducted in 1999–2000 on a representative sample of the inhabitants of Slovenia (N = 1291), is presented in this paper, namely the part devoted to the perception of regions. Participants were questioned about different aspects of their image of Slovenia, including their preferences for residence in different parts of Slovenia, partition of the country into regions, travelling patterns, environmental problems and solutions, possibilities of development, etc. Cognitive maps appeared as highly selective, with certain general similarities, but also with individual idiosyncrasies, depending on the place of living and other demographic characteristics. Though respondents were not highly devoted to the formation of regions, a rather clear mental image of them appeared. Main findings are discussed and applicability of the cognitive map for planning purposes are substantiated.     

The empirical and theoretical base of family therapy and multiple family day therapy for adolescent anorexia nervosa

There is growing empirical evidence that family therapy is an effective treatment for anorexia nervosa, particularly in adolescence. This is in spite of the fact that the theoretical model from which most of the empirically based treatments are derived appears flawed. This paper provides a brief overview of the research evidence from treatment studies and studies of family functioning. It suggests that the main limitation of earlier theoretical models is their focus on aetiology rather than on an understanding of how families become organized around a potentially life-threatening problem. An alternative conceptual model is presented, and its application to family therapy and multiple-family therapy for adolescent anorexia nervosa is described. The treatment approach focuses on enhancing the families' own adaptive mechanism and mobilizing family strengths.     

A comparative study of family therapy in the treatment of opiate users in a London drug clinic

This study presents the results of a randomized treatment trial of family therapy and two control treatments for 119 outpatient opiate users. All treatments were combined with a methadone reduction programme. The control treatments were: (1) a 'standard' treatment (supportive psychotherapy) and (2) a 'low contact' intervention. Treatment outcome was evaluated six and twelve months after the initial assessment. Both the family therapy and minimal intervention groups had a significantly higher number of drug–free days at six and twelve months, compared to the standard treatment, despite receiving fewer treatment sessions. Across all treatments there was evidence for a gender difference in response to therapy in users who were in a couple relationship. In couples where both partners were using drugs women did significantly better than men. Men living with a non–drug–abusing partner fared better than men living with a drug–using partner. Across the treatment groups diminution in drug use was accompanied by improvements in psychosocial functioning. Unemployment, sharing needles and injecting drugs were predictive of poor outcome.