Identical Twins Reared Together and Apart Tend to Score Very

question 131

Multiple Choice

Identical twins reared together and apart tend to score very similarly on standardized measures of intelligence.Which of the following statements does this finding support?

• A)Intelligence levels are based on environmental factors for both twins reared together and twins reared apart.
• B)Environmental factors are stronger influences on twins raised together compared to twins reared apart.
• C)The "intelligence gene" is identical in both twins reared together and reared apart.
• D)Genes are an important source of individual variations in intelligence test scores.

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Definitions:

Directions of Motion

The path along which something moves, proceeds, or is directed.

Corpus Callosum

Band of white matter containing about 200 million nerve fibers that connects the two cerebral hemispheres to provide a route for direct communication between them.

Prefrontal Association Cortex

A region of the frontal lobes involved in planning complex cognitive behaviors, personality expression, decision making, and moderating social behavior.

Posterior Parietal Cortex

An area of the brain located at the back of the parietal lobe, involved in integrating sensory information and in the coordination of movements.