To find out if using night lights affected the development of nearsightedness, a group of researchers asked parents whether their teen-aged children had slept with night lights on as infants. This research illustrates a

Marsten is not comfortable with herself unless everyone approves of her. Marsten is experiencing which irrational belief?

a. myth of helplessness b. overgeneralization c. need for approval d. perfectionism

When a family consists of a father who works and a mother who stays at home to care for children, the word used to describe this situation is:

a. nuclear family b. blended family c. "empty" family d. single-caregiver family