The Concordance Rate for Anorexia Nervosa in Identical Twins Is

question 177

Multiple Choice

The concordance rate for anorexia nervosa in identical twins is 70 percent. This means that:

• A) fraternal twins also have a 70 percent chance of developing anorexia.
• B) in 70 percent of identical twins, both twins have anorexia.
• C) fraternal twins have a 30 percent rate of anorexia.
• D) if one identical twin has anorexia, there is a 70 percent chance that the other twin has anorexia too.

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