How Are Twin Studies Used to Estimate the Heritability of Attitudes

question 90

Multiple Choice

How are twin studies used to estimate the heritability of attitudes?

• A)The rate of agreement for identical twins on an issue gives an estimate of how heritable it is.
• B)The rate of agreement for fraternal twins on an issue gives an estimate of how heritable it is.
• C)The rate of agreement for identical twins on an issue,minus the rate for fraternal twins,gives an estimate of how heritable it is.
• D)The rate of agreement for fraternal twins on an issue,minus the rate for identical twins,gives an estimate of how heritable it is.

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