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Fischbein, Siv – 1979
A summary and discussion of a series of studies considered the dilemma that equal educational treatment of all children in public schools appears likely to increase the spread of differences among them in educational achievement. Longitudinal studies of pairs of identical and of fraternal twins in Sweden from 10 to 18 years of age considered the…
Descriptors: Achievement Tests, Adolescents, Aptitude Tests, Body Height

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