What Did a Study of 500 Pairs of MZ and DZ

question 139

Multiple Choice

What did a study of 500 pairs of MZ and DZ twins done in Kentucky find, in terms of intelligence?

• A)The correlations between MZ twins and the correlations between DZ twins were similar.
• B)The correlations between DZ twins were about the same as those between other siblings.
• C)MZ twins were generally smarter than DZ twins.
• D)DZ twins were generally smarter than MZ twins.

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Definitions:

Winter 1989-90

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A period of either recession or stagnation accompanied by inflation.

Recessions

Times of short-term economic downturn characterized by decreased commerce and industrial production, typically recognized by a drop in Gross Domestic Product (GDP) for two consecutive quarters.

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A period of ten years marked by significant economic growth and a vibrant cultural scene in the United States, commonly known as the "Roaring Twenties."