Twins Studies Show That Between 43 and 56 Percent of the Variance

question 117

Multiple Choice

Twins studies show that between 43 and 56 percent of the variance in the dimensions of psychopathy can be attributed to ________

• A) being a twin.
• B) genetic factors.
• C) shared environmental influences.
• D) nonshared environmental influences.

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Definitions:

Marginal Rate

The rate at which something changes with each additional unit, such as the marginal tax rate, which is the rate applied to each additional dollar of income.

Substitution

The economic principle where consumers replace more expensive items with less costly alternatives.

Indifference Curve

A graphical representation of different combinations of two goods or services among which a consumer is indifferent, showing preferences of consumption.

Inferior Good

A type of good for which demand decreases as the income of the consumer increases, opposite to the behavior observed with normal goods.