What do naturalistic observations,case studies,and surveys all have in common
A) They involve manipulating the variables of interest in the study. B) They show cause-and-effect relationships. C) They take place in an artificial setting. D) They involve describing behaviour.
Which statement describes oral sex and vaginal intercourse among adolescents?
A) Females are more likely than males to report receiving oral sex. B) Adolescents are about as likely to engage in oral sex as vaginal intercourse. C) Adolescents are far more likely to engage in vaginal intercourse than oral sex. D) By age 16, about the majority of teenage boys have received oral sex.