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Peer reviewedFancher, Raymond E. – Alberta Journal of Educational Research, 1995
"The Bell Curve" declares that studies of separated identical twins--the "purest" of "direct" methods for estimating IQ heritability--indicate a value of +.75-+.80. But, the main study cited suggests a heritability of "two-thirds" for the middle class, and Herrnstein and Murray neglect to mention numerous…
Descriptors: Adopted Children, Correlation, Heredity, Intelligence Differences
Peer reviewedKamin, Leon J. – Psychological Bulletin, 1980
This article reviews sex studies of children of cousin marriages and three studies of children of incestuous matings. It is argued that these studies, taken as a whole, provide no substantial evidence for an inbreeding depression effect within the polygenic system commonly asserted to determine IQ. (Author/DB)
Descriptors: Children, Genetics, Heredity, Intelligence
Gonzalves, Linda – 1983
The history of the study of human mental ability is an example of the dialectic in social science between those who interpret data within the framework of existing social inequities and those who look for perspectives that might eventually dissolve inequities. The dedication of Henry Herbert Goddard to a belief in the scientific proof of…
Descriptors: Bias, Classification, Cognitive Ability, Data Analysis
Download full textDowell, David A. – 1977
This paper examines the question of the hereditary nature of intelligence and the validity of some of the statistical procedures which have been used in measuring the degree of hereditability. The author feels that proof of the question lacks sufficient scientific rigor for the support of any conclusion, particulary for a question of such…
Descriptors: Heredity, Intelligence, Intelligence Differences, Intelligence Tests
Kamin, Leon; Green, Winifred – 1973
This document comprises three presentations made on March 23 at a symposium sponsored by the Southern Regional Council focusing on Human Intelligence, Social Science and Social Policy. The first of the three parts of the document is the text of the principal presentation, made by Dr. Leon Kamin, Chariman of the Department of Psychology at…
Descriptors: Ability Grouping, Educational Diagnosis, Environmental Influences, Genetics
Peer reviewedKirby, John R. – Alberta Journal of Educational Research, 1995
Argues that Herrnstein and Murray's cognitive stratification is not intrinsically ominous, since context determines its meaning; their "intelligence" data actually measures educational achievement; environmental effects are underestimated; and analyses and social policy recommendations are bound to the U.S. context. Concludes that…
Descriptors: Context Effect, Educational Attainment, Educational Policy, Elementary Secondary Education
Goldberger, Arthur S. – 1974
This paper critically examines the portions of Arthur Jensen's books, "Genetics and Education" and "Educability and Group Differences," that concern Barbara Burks' 1928 study of adoptive families. Jensen cites the low correlations of children's IQs with measures of home environment from Burks' study as evidence that environment…
Descriptors: Adopted Children, Biological Influences, Cognitive Development, Cultural Differences
