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Peer reviewed Peer reviewed
Weinberg, Richard A.; And Others – Intelligence, 1992
Intelligence quotient (IQ) test performance is reported for 93 families restudied 10 years after the Minnesota Transracial Adoption Study in 1975. Results for 426 subjects support the original finding: being reared in the IQ test culture and prevailing school culture benefits all children's IQ scores and academic achievement. (SLD)
Descriptors: Academic Achievement, Adolescents, Adopted Children, Comparative Testing
Peer reviewed Peer reviewed
Fischbein, Siv – Intelligence, 1990
A comparison was made of ability and achievement test results and school grades for 323 pairs of Swedish male and female twins and 740 controls in relation to social background. An interaction effect of sex and social background was found for verbal ability and mathematics test results. (SLD)
Descriptors: Ability, Academic Achievement, Achievement Tests, Aptitude Tests