Offspring perception of peer behaviorsincluded perceived smoking, alcohol and drug use among current same sex and opposite sex friends. For the current friends question, offspring reported the number of current male/female friends that used drugs such as marijuana, the number that used alcohol at least once a week, and the number that smoked cigarettes by answers to the following questions: 1) In your opinion, how many of your friends have used alcohol?; 2) how many have used marijuana?; 3)… how many smoke cigarettes?'.
