Effects of aerobic exercise on overweight children's cognitive functioning: a randomized controlled trial

The study tested the effect of aerobic exercise training on executive function in overweight children. Ninety-four sedentary, overweight but otherwise healthy children (mean age = 9.2 years, body mass index 85th percentile) were randomized to a low-dose (20 min/day exercise), high-dose (40 min/day exercise), or control condition. Exercise sessions met 5 days/week for 15 weeks. The Cognitive Assessment System (CAS), a standardized test of cognitive processes, was administered individually before and following intervention. Analysis of covariance on posttest scores revealed effects on executive function. Group differences emerged for the CAS Planning scale (p = .03). Planning scores for the high-dose group were significantly greater than those of the control group. Exercise may prove to be a simple, yet important, method of enhancing aspects of children's mental functioning that are central to cognitive and social development.     

The seductive nature of WISC-R short forms: An analysis with gifted referrals

The use of a short form of the WISC (California Abbreviated WISC for the Intellectually Gifted) (CAW-IG) developed for screening gifted referrals was investigated with the WISC-R. Two methods were used to estimate IQ. and the results indicated that the short form could be effective in the prediction of Full Scale IQ. This was true even when the prediction was based on data from the original WISC. Discussion centered on the implications of these results for the use of shortened IQ tests. A number of problems were examined, and practitioners are cautioned against indiscriminate use of such procedures.     

Family Influences on Adaptive Development in Young Children with Down Syndrome

In this study we investigated the extent to which the family environment predicted differences in trajectories of adaptive development in young children with Down syndrome. The sample was comprised of 54 children with Down syndrome and their families who were studied from infancy through the age of 5 years as part of a longitudinal study of children with disabilities. Hierarchical linear modeling (HLM) was used to estimate the parameters of hierarchical growth models in domains of adaptive development. Results indicated that growth in communication, daily living skills, and socialization domains were predicted by measures of the family environment (i.e., family cohesion and mother-child interaction) above and beyond that predicted by maternal education. Further, Bayley MDI measures during infancy did not predict changes in adaptive development in any of the domains. The results are discussed in terms of implications for service provision and for expanding theoretical frameworks to include the development of children with disabilities.     

History of Science - With Labs

Science &; Education - We describe here an interdisciplinary lab science course for non-majors using the history of science as a curricular guide. Our experience with diverse instructors...     

Variables influencing teachers' decisions to refer children for school psychological assessment services

The present study examined the variables influencing a teacher's decision to refer children suspected of having developmental or behavioral problems. Results indicated that younger children were not referred at a disproportionate rate for school psychological services as compared to their older classmates as suggested by earlier research, height and weight acted as moderator variables with respect to teacher referral patterns, African American children were referred at a disproportionate rate for developmental handicap services than were Caucasian children, and males were referred more than females for behavioral problems. These findings are discussed in terms of attribution and expectancy theories. © 1997 John Wiley & Sons, Inc.