The influence of complex working memory span task administration methods on prediction of higher level cognition and metacognitive control of response times

Participants between the ages of 18 and 80 were tested on a complex working memory span task that was administered either using a typical experimenter-paced method or using a method in which the processing component was presented at a fixed, limited-pace presentation rate. Path analyses revealed that even after controlling for individual differences in general processing speed, the limited-pace task predicted unique variance in episodic memory, executive functioning, and fluid intelligence, whereas the experimenter-paced task did not. For the experimenter-paced task, slower responses on the processing component of the task were associated with better recall, but only when individual differences in processing speed were controlled. These findings suggest that metacognitive control of response times affects recall from working memory span tasks, as well as the relationship between span task recall and high-level cognition. These results support resource-sharing explanations of working memory and suggest that limiting processing times using computer pacing of complex span tasks can be an effective way to efficiently measure working memory capacity.     

Body Image and Self-Esteem Across Age and Gender: A Short-Term Longitudinal Study

This study examined the relationship between body image and self-esteem across time and age for men and women. Participants were 150 men and 239 women aged between 20 and 86 years (M?=?59.73), recruited from the general population in Australia. They completed a questionnaire assessing self-esteem, body dissatisfaction, body importance, and a range of other domains of life satisfaction at baseline and 2 years later. Cross-sectionally, we found that higher self-esteem was associated with lower body dissatisfaction, but there was no consistent relationship between these variables across time for age and gender. Women were more dissatisfied with their bodies than men; yet, men placed greater importance on their appearance than women, and also reported high levels of body dissatisfaction.     

Parent-Child Interactions Among Low-Income Mexican American Parents and Preschoolers: Do Clinic-Referred Families Differ From Nonreferred Families?

This study compared low-income Mexican American parents of young children referred for behavior problems to their nonreferred counterparts on an observational measure of parent-child interactions. Referred Mexican American parents demonstrated more negative behaviors than their nonreferred counterparts in both nondirective and highly directive situations. However, no differences were found at moderate levels of directiveness. The most and least directive situations in the Dyadic Parent-Child Interaction Coding System best differentiated referred from nonreferred Mexican American families, and families differed more in their negative behaviors than positive behaviors. Many of the parenting behaviors that have been found to differ between referred and nonreferred Caucasian families were also observed to differ between their Mexican American counterparts.     

What makes a good story

Three different ways have been selected for analyzing a story's structure, each focusing on different types of information. (a) Episodic or story grammar approaches stories as problem-solving episodes, emphasizing goals and activities to achieve them. (b) Labov's high point structure emphasizes affective information and sees stories as organized around emotional high points or crisis events. (c) Deese's dependency analysis emphasizes linguistic complexity and, in particular, the way propositions are related to each other through a relationship of either coordination or subordination. Stories were scored according to how well they realized good structure in each system, and the three scoring systems were relatively independent of each other. Adults were asked to rate 3-to 9-year old children's personal narratives in terms of how good a story each was, and their ratings were compared to how the stories were scored in terms of all three systems. None of the systems completely explained the subjective quality ratings; rather, all three seemed to contribute in different ways to subjects' ratings, with the best narratives generally deemed sophisticated and complex in at least two of the three systems.The authors wish to acknowledge their great debt to James Deese and Christine Glenn. This research was supported by the National Sciences and Engineering Research Council of Canada Grant A-7911 to Carole Peterson.     

Spatial topological constraints in a bimanual task.

Previous research has shown that the concurrent performance of two manual tasks results in a tight temporal coupling of the limbs. The intent of the present experiment was to investigate whether a similar coupling exists in the spatial domain. Subjects produced continuous drawing of circles and lines, one task at a time or bimanually, for a 20 s trial. In bimanual conditions in which subjects produced the circle task with one hand and the line task with the other, there was a clear tendency for the movement path of the circle task to become more line-like and the movement path of the line task to become more circle-like, i.e., a spatial magnet effect. A bimanual circle task and a bimanual line task did not exhibit changes in the movement path when compared to single-hand controls. In all bimanual conditions, the hands were tightly temporally locked. The evidence of temporal coupling and concomitant accommodation in the movement path for the conditions in which the hands were producing different shapes suggests that spatial constraints play a role in the governance of bimanual coordinated actions.     

Sociocultural Influences on Body Image Concerns and Body Change Strategies Among Indigenous and Non-Indigenous Australian Adolescent Girls and Boys

Sociocultural messages about the ideal body build have been studied predominantlyamong White adolescent girls. In the current study we examined the relationships between perceived sociocultural influences, body image concerns, and body change strategies among 47 (22 boys and 25 girls) Indigenous Australian adolescents. These relationships were compared to those from 47 non-Indigenous adolescents (predominantly from an Anglo-Saxon background), who were matched on gender, age, and school grade. Overall, the sociocultural influences were found to be associated with body image concerns and body change strategies among both cultural groups. The only exception was that the sociocultural influences were not associated with the Indigenous girls’ levels of body dissatisfaction or body image importance. These findings are discussed in relation to past studies of White and Black girls.     

Acute memory deficits in chemotherapy-treated adults

Data from research on amnesia and epilepsy are equivocal with regards to the dissociation, shown in animal models, between rapid and slow long-term memory consolidation. Cancer treatments have lasting disruptive effects on memory and on brain structures associated with memory, but their acute effects on synaptic consolidation are unknown. We investigated the hypothesis that cancer treatment selectively impairs slow synaptic consolidation. Cancer patients and their matched controls were administered a novel list-learning task modelled on the Rey Auditory Verbal Learning Test. Learning, forgetting, and retrieval were tested before, and one day after patients’ first chemotherapy treatment. Due to difficulties recruiting cancer patients at that sensitive time, we were only able to study 10 patients and their matched controls. Patients exhibited treatment-dependent accelerated forgetting over 24 hours compared to their own pre-treatment performance and to the performance of control participants, in agreement with our hypothesis. The number of intrusions increased after treatment, suggesting retrieval deficits. Future research with larger samples should adapt our methods to distinguish between consolidation and retrieval causes for treatment-dependent accelerated forgetting. The presence of significant accelerated forgetting in our small sample is indicative of a potentially large acute effect of chemotherapy treatment on forgetting, with potentially clinically relevant implications.     

The Relationship Between Religion, Spirituality, Psychological Adjustment, and Quality of Life Among People with Multiple Sclerosis

The present research was comprised of two studies that aimed to explore the role of religious and spiritual variables in the psychological adjustment and quality of life of people with Multiple Sclerosis (MS). In study 1, religious behavior and objective levels of spirituality and religiosity were not significantly related to psychological adjustment or quality of life among people with MS. Positive religious coping was negatively related to psychological adjustment and quality of life. In study 2, Intrinsic religious orientation and Quest religious orientation were related to poor psychological adjustment. Implications of the present research for people with MS and other chronic illnesses are discussed.