Relates the development of theories concerning gender differences in mental ability and reexamines them using meta-analysis. Finds that the greatest difference is in one type of spatial ability, mental rotation. There is only a small difference in mathematical performance, and no difference in verbal ability. (DM)

Presents meta-analysis of 54 articles and dissertations dealing with cognitive preferences. Information provided includes: test reliability; comparisons by country, grade level, gender, disciplines, and curricula; relationships between cognitive preferences and career orientation, science achievement, interest, and aptitude; and effect sizes.…

Drawing from work on the meta-analysis of over 500 validation studies of the General Aptitude Test Battery (GATB) by the U.S. Employment Service, the paper presents a methodological message and a substantive message. Gene Glass's methods, as used by Edwin Ghiselli in personnel selection, ignore study artifacts (sampling error, error of…

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)

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…