In the article Chip Off the Old Block which discussed genetics and the Colorado Adoption Project, the Minnesota twin study was discussed in the introduction to the chapter. For monozygotic twins, the Minnesota study found:
(a) correlations between about .40 and .70 for most personality characteristics
(b) about the same level of personality correlations for both mono and dizygotic twins
(c) much greater similarity between monozygotic twins that were reared together
(d) each of these choices [a, b, and c] are correct
A
Psychology
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What is the independent variable in an experiment?
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