GATE 2021 XH5 – Question 62

Biological and Evolutionary Basis of Behaviour · Heredity, Evolution and Genetics: Natural selection, chromosomal anomalies, nature-nurture controversy (twin and adoption studies) · 2 marks · Multiple select

Which methods can test genetic accounts of psychopathology?

Twin studies
Family-history studies
Adoption studies
Psychodynamic studies

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Correct answer: (A) Twin studies; (B) Family-history studies; (C) Adoption studies

Explanation

Twin comparisons vary genetic relatedness, family studies examine aggregation among relatives, and adoption designs help separate inherited from rearing-environment similarities. Therefore A,B,C provide relevant evidence. Psychodynamic studies alone do not supply these genetic contrasts. Shared environments and other confounds still require care in interpreting genetic evidence.

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