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Prashner, V. P.; Chowdhury, T. A.; Rowe, B. R.; Bain, S. C. – American Journal on Mental Retardation, 1997
ApoE gene polymorphism was examined in 100 adults with Down syndrome with and without dementia (Alzheimer's disease) and 346 control subjects. Additionally, a meta analysis of studies (total N=480 subjects) was performed. Results indicated a similar incidence of the gene across groups but subjects with the allele tended to an earlier onset of…
Descriptors: Adults, Age Differences, Alzheimers Disease, Downs Syndrome
Peer reviewedHyde, Janet Shibley – Developmental Psychology, 1984
Provides a comprehensive meta-analysis of gender differences in aggression; offers estimates of the magnitude of differences; provides a developmental analysis of effects for all ages for which data are available; and includes a total of 143 studies. Basic techniques of meta-analysis are presented and then applied to analyze studies of gender…
Descriptors: Age Differences, Aggression, Correlation, Developmental Stages
Peer reviewedNiemiec, Richard P.; Walberg, Herbert J. – Journal of Educational Computing Research, 1985
A metaanalysis of elementary school computer-assisted instruction (CAI) research found that lower achievers profit more from CAI; it is more effective in primary grades; boys may learn more than girls; drill and practice produces highest effect sizes; and no relationship exists between year of study publication and effect size. (MBR)
Descriptors: Academic Achievement, Age Differences, Analysis of Variance, Cognitive Ability
Salzman, Stephanie A. – 1987
A meta-analysis was conducted of 137 studies investigating the effects of father absence due to employment, military service, death, divorce, separation, or desertion on children's cognitive performance as assessed by scores on standardized intelligence, scholastic aptitude, and academic achievement tests and school grades. Aggregation of the…
Descriptors: Achievement Tests, Age Differences, Analysis of Variance, Aptitude Tests
