Harvard Educational Review, Volume 39Howard Eugene Wilson Harvard University, 1969 "The Harvard Educational Review is a journal of opinion and research in the field of education. Articles are selected, edited, and published by an editorial board of graduate students at Harvard University. The editorial policy does not reflect an official position of the Faculty of Education or any other Harvard faculty."-- Volume 81, Number 2, Summer 2011 |
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Page 67
... twins and singletons . ( Zazzo , 1960. ) Three other lines of evidence place the locus of this effect in the prenatal en- vironment . Monozygotic twins are slightly lower in IQ than dizygotic twins ( Stott , 1960 , p . 98 ) , a fact ...
... twins and singletons . ( Zazzo , 1960. ) Three other lines of evidence place the locus of this effect in the prenatal en- vironment . Monozygotic twins are slightly lower in IQ than dizygotic twins ( Stott , 1960 , p . 98 ) , a fact ...
Page 305
... twins , there are the often - discussed uncertainties as to whether intra - family environmental differences are the same for the two kinds of twins , as the formula assumes . Identical twins may more often share experiences than dizygotic ...
... twins , there are the often - discussed uncertainties as to whether intra - family environmental differences are the same for the two kinds of twins , as the formula assumes . Identical twins may more often share experiences than dizygotic ...
Page 573
... twin pairs of 4 IQ points can be accounted for by the fact that MZ twins share a more similar environment than do DZ twins . Studies of twins separated in early life and reared apart would seem to provide an adequate basis to answer the ...
... twin pairs of 4 IQ points can be accounted for by the fact that MZ twins share a more similar environment than do DZ twins . Studies of twins separated in early life and reared apart would seem to provide an adequate basis to answer the ...
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American analysis ARTHUR Arthur Jensen assortative mating average B. F. Skinner basic behavior child classroom cognitive College compensatory education component concept correlation cultural curriculum Dewey disadvantaged children discussion distribution educa effects environment environmental factors epistasis estimate evidence experience fact families function gains genes genetic factors genotype Harvard Educational Review Heidegger heredity heritability human important individual differences intellectual intelligence test interaction involved IQ tests issues Jensen learning LEROY F MARTIN DEUTSCH mean IQ measure ment mental abilities MZ twins Negro normal normal distribution parents percent persons phenotypic Piaget political population preschool present problems Professor Jensen's programs psychological psychometric question race racial reading reported role siblings social class society Stanford-Binet structure studies teachers teaching test scores theory tion traditional twin studies twins reared UNIVERSITY OF CALIFORNIA variables variance York