For many couples, communication about sex is often hampered by

If a researcher only uses classificatory variables and does not manipulate any variables, the type of research is:

a) Case study. b) Single-subject design. c) Correlational d) Experimental.

According to your textbook, some of the best anti-smoking programs that have been shown to help young people resist

pressure from peers, adults, and the media to start smoking involve training. a. behavioral risk factor b. health-promoting behavioral c. refusal skills d. stress reduction