Psychology / Unit 7 Psych 0828 short lesson, about 20 seconds
Heredity and Environment in Intelligence
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The idea
Intelligence test scores show substantial heritability within populations and remain strongly responsive to environment.
In practice
Adopted children's scores move toward those of their adoptive homes while retaining resemblance to biological parents.
Where people slip
Heritability within a group says nothing about differences between groups. That inference is invalid.
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