Different components of working memory have different relationships with different mathematical skills

A comprehensive working memory battery and tests of mathematical skills were administered to 90 children-41 in Year 1 (5-6 years of age) and 49 in Year 3 (7-8 years of age). Working memory could explain statistically significant variance in number writing, magnitude judgment, and single-digit arithmetic, but the different components of working memory had different relationships with the different skills. Visual-spatial sketchpad (VSSP) functioning predicted unique variance in magnitude judgments and number writing. Central executive functioning explained unique variance in the addition accuracy of Year 1 children. The unique variance explained in Year 3 multiplication explained by phonological loop functioning just missed conventional levels of significance (p=.06). The results are consistent with the VSSP having a role in the development of number writing and magnitude judgments but a lesser role in early arithmetic.     

People newly in love are more responsive to positive feedback

Passionate love is associated with increased activity in dopamine-rich regions of the brain. Increased dopamine in these regions is associated with a greater tendency to learn from reward in trial-and-error learning tasks. This study examined the prediction that individuals who were newly in love would be better at responding to reward (positive feedback). In test trials, people who were newly in love selected positive outcomes significantly more often than their single (not in love) counterparts but were no better at the task overall. This suggests that people who are newly in love show a bias toward responding to positive feedback, which may reflect a general bias towards reward-seeking.     

Dietary restraint as values-related motivation: a psychometric clarification

Psychological motivation toward dietary restraint can be measured by Cognitive Restraint, a subscale on the Three-factor Questionnaire (TFQ; Stunkard & Messick, 1985), and Drive for Thinness, a subscale on the Eating Disorder Inventory (EDI; Garner & Olmstead, 1984). On the basis of data obtained from American undergraduates, these two scales correlated significantly (r = .55); three value scales on the Eating Values Survey (EVS; Simmons, 1989) also correlated significantly with both Cognitive Restraint and Drive for Thinness (Appearance and Manners positively, Enthusiasm negatively). Correlations of other TFQ and EDI scales with values were minimal. Personal values specific to eating are discussed as components of a general motivational orientation toward self-management of eating but as relatively unrelated to such disruptive attributes of eating behavior as disinhibition or bulimia.     

Motivational Influences on Controlled Processing: Moderating Distractibility in Older Adults

ABSTRACT

Research has suggested that aging is associated with a decline in the efficiency of controlling processing operations. Three studies examined the moderating impact of personal relevance on age differences in one index of such operations: the ability to ignore distracting information. Young (17–26) and older (58–86) adults read a series of passages interspersed with irrelevant, distracting information, with the relevance of the passage content to these two age groups being systematically varied. For both groups, processing was more efficient and comprehension enhanced when passage relevance was high. These effects were particularly strong among older adults, a finding consistent with a growing body of data highlighting the importance of motivational factors in determining age differences in cognitive performance.     

Developmental and individual differences in performance on phonological synthesis tasks

This study was conducted in order to examine the role of individual differences in working memory and lexical access in accounting for age and reading skill related differences in performance on phonological synthesis tasks. The performance of 28 kindergarten, first-, and second-grade children with normal reading skills, as well as that of 28 reading-disabled second graders, was compared under four testing conditions. The testing conditions were formed by completely crossing rate of presentation of phoneme strings with type of stimulus to be blended (real or nonword). Both independent variables affected performance on the blending tasks, with better performance obtained at faster presentation rates and with real words. There was a developmental discontinuity in overall performance, with the kindergarten children obtaining substantially lower scores than the first or second graders. In the comparison of second-grade good and poor readers, there was a significant interaction between groups, presentation rates, and type of stimulus. The findings are discussed in terms of their implications for a general model of performance on the sound blending task, as well as their value for interpreting individual differences on the task.     

Use of small group contingencies and special activity times to manage behavior in a first-grade classroom

Management procedures were succesfully employed to decrease the frequency with which first-grade children left small instructional centers. To decrease the out-of-center behavior, access to a 30-minute special activity time was made available to different groups as a function of everyone's remaining within his group instructional center. One occurrence of out-center behavior resulted in a cost of ten minutes of special activity time for the children in that center. The frequency of out-of-center behaviors quickly decreased from Baseline I to the Modification I condition, increased when the modification condition was removed, and decreased again in Modification II.Observations made on the percent of the children's appropriate social and academic behaviors showed increases during the modification conditions. Also, the time the teacher spent in responding to inappropriate behavior decreased and the time spent in instruction increased during the modification conditions.