________ involves a cyclical pattern of binge eating followed by purging through compensatory methods, such as inducing vomiting or the use of laxatives.

A psychologist who is studying the mathematical abilities of adults finds significant differences between the scores of adults born 50 years ago, when rote learning was stressed,

and those born 25 years ago, when more "progressive" approaches to education were popular. This is an example of a(n) failure of longitudinal research. advantage of cross-sectional research. cohort difference. intellectual decline in middle adulthood.

According to the article Take a Whiff about mate choice and body odor, how can an organism increase the chances of having MHC heterozygous offspring:

(a) by eating the right foods and getting plenty of sleep (b) mating with individuals who have different alleles (c) covering up body odor with perfume-like substances (d) choosing mates who have the same eye color