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Twin and Adoption Studies in AP Psychology

Verified for the 2027 exam
Verified for the 2027 exam•Fiveable Content Team

Definition

Twin studies compare identical twins raised together versus those raised apart to determine genetic influence. Adoption studies compare biological relatives with adoptive relatives to understand both genetic and environmental influences.

This definition is part of Fiveable's AP Psychology review, which also has guided practice questions.

AP course connection

Topic 2.1: Interaction of Heredity and Environment

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Unit 2

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