HUMAN MENTAL ABILITIES Lecture 5 A/Prof Irina Harris irina.harris@sydney.edu.au PSYC1002 Heritability of intellectual abilities – Francis Galton Paradigms – Family resemblance studies – Adoption studies – Twin studies The Heritability (H) Index Describe the evidence that IQ is substantially heritable. Explain why researchers may use monozygotic (identical) twins to determine the heritability of mental abilities.
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