In the United States of America, the average age for a first marriage has increased by ____ years since 1960, when the average age was 23 for men and 21 for women

For every ________ girl(s) diagnosed with autistic disorder, about ________ boys are diagnosed.

a. one; two b. three; four c. two ; five d. one; four

The first stage of Erikson's Personality Theory is known as:

a. autonomy vs. doubt. b. trust vs. mistrust. c. initiative vs. guilt. d. industry vs. inferiority.