A researcher discussing the prevalence of eating disorders makes reference to what she says is a cohort effect for these disorders. What does this mean?
a. Eating disorders tend to run in close-knit families.
b. Women born after 1960 have a higher rate of bulimia nervosa than women born prior to 1960.
c. Families that place a special emphasis on eating meals together have high rates of eating disorders.
d. The frequency of eating disorders is strongly related to the rate among friends, especially in high school.
Question 2
Which of the following statements about the prevalence of eating disorders is most accurate?
a. Anorexia is common throughout the population.
b. Anorexia is rare in the general population but common among certain segments.
c. The prevalence of bulimia is declining, while the prevalence of anorexia is increasing.
d. Bulimia is increasingly most rapidly among young males.
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reference
Human Trinucleotide Repeat Disorders