According to Masters and Johnson, the four stages of sexual arousal are excitement, plateau, orgasm, and __________

If you want to make an educated guess about your child's adult height, at what age is the child at the 50% mark?

A) by 2 years of age B) by 4 years of age C) by 8 years of age D) by 16 years of age

The limited data we have suggests that personal convoys _______ over time

a. contract gradually in size, but include more and more intimate relationships b. remain about the same size, with relationships becoming more intimate c. increase in size, with more friends added in each decade d. increase in size, but with fewer intimate relationships