The strongest support for a large genetic influence on IQ would be provided by
A) a high positive correlation between the IQs of separated monozygotic twins who were separated at birth and who grew up in extremely different environments.
B) a high positive correlation between the IQs of dizygotic twins who were raised together.
C) a higher positive correlation between the IQs of adopted children and their adoptive parents than between adopted children and their biological parents.
D) a high positive correlation between the IQs of nonbiological siblings raised together.
Correct Answer:
Verified
Q38: It is difficult to separate environmental and
Q39: Adoption studies suggest that IQ scores of
Q40: Tamara is an adopted child. Studies suggest
Q41: A plausible explanation for the fact that
Q42: The conclusion to be drawn in studies
Q44: Heritability refers to
A) the proportion of genes
Q45: The most widely accepted contemporary estimate of
Q46: What does the heritability statistic estimate?
A) The
Q47: The heritability of IQ in a given
Q48: Performance on IQ tests has improved steadily
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