If you sent a survey to a representative sample of 10,000 graduating high school seniors asking them to report how many of their friends get drunk at least once a week, you should expect that about _____ would respond "yes."

Dr. Michaels is conducting a study in which he wants to compare the frequency of alcoholism among identical twins with the frequency of alcoholism among fraternal twins. Dr. Michaels is probably studying _________

A) neuropsychology. B) evolutionary psychology. C) behavioral genetics. D) the psychology of addiction.

At age 40, which of the following groups has the highest rate of individuals who have never been married?

a. African Americans b. Latinos c. White Americans d. Native Americans