The Similarity Between the Intelligence Test Scores of Identical Twins

question 138

Multiple Choice

The similarity between the intelligence test scores of identical twins raised apart is

• A)less than that between children and their biological parents.
• B)equal to that between identical twins reared together.
• C)equal to that between fraternal twins reared together.
• D)greater than that between ordinary siblings reared together.

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Definitions:

Unconditioned Response

A natural, instinctive response to a stimulus that happens without any previous learning or conditioning.

Conditioned Stimulus

An initially neutral stimulus that, after being associated with an unconditioned stimulus, comes to trigger a conditioned response.

Operant Conditioning

A learning process in which the strength of a behavior is modified by reinforcement or punishment.

Edward Thorndike

An American psychologist known for his work in comparative psychology and the law of effect.