The class backgrounds of marijuana smokers, as opposed to those who have never smoked marijuana, are relatively higher. Probably the higher the income of one's family, the higher the education of one's parents, and the greater the prestige of one's father's occupation, the greater is the likelihood of smoking marijuana. Also, for the young adult who has begun working, and who has left his family of orientation, the higher is his education, income and occupational prestige, the greater are his chances of smoking marijuana.