Worldwide, at MOST, _____ percent of students report periodic binge eating or self-induced vomiting.

Even though more than 2.3 percent of people have IQs below the 70 cutoff, only about 1 percent of the population has an intellectual disability. The prevalence of intellectual disability is lower than the prevalence of low IQs because

a. IQ tests are not reliable. b. most forms of intellectual disability have biological causes. c. many adults with low IQs have adequate adaptive skills. d. only people younger than age 18 can be diagnosed with intellectual disability.

According to the article The Nose Knows about the ability of mothers to detect the scent of their babies, in the main study reported, two quasi- experimental groups that were compared were ________ and ________

(a) mothers; sons (b) mothers and fathers; children (c) fathers; mothers (d) mothers; college students