From infancy through adulthood, the need for sleep ____

Most job changes occur

a. during young adulthood b. as an individual faces retirement c. during middle age d. during the retirement years

Which of the following statements is supported by current research on ethnic differences in general intelligence among children?

A) American black children score, on average, 10 to 12 IQ points below American white children. B) Asian-American children score, on average, 15 IQ points above their white counterparts. C) Hispanic-American children score, on average, 12 to 14 IQ points below American black children. D) Hispanic-American children score, on average, 15 IQ points above their white counterparts.