Assuming their good physical and mental health, 24 adolescent and 76 adult foot-racers were administered a questionnaire about unusual groups. Adolescent runners indicated statistically significantly mote dislike for school psychologists, janitors, Jews, blacks, marijuana smokers, women's liberation members, hippies, nurses, school teachers, ex-convicts, homosexuals, lesbians, motorcycle riders, and college professors than did the adult runners. The adolescent runners disliked alcoholics, and even joggers/foot racers more than did the adult runners. No statistically significant sex differences were found.
