An experiment has been performed in order to study how men and women are represented in the mind of adolescents (VI-IX forms schoolchildren). The content of corresponding images and some sex/age differences of them are presented. It has been found out that direct personal interactions with people of the opposite sex is practically the only sphere of individual experience which provides standards of masculinity/femininity. For the VII form schoolchildren this sphere is confined to their families, for the older group this sphere is composed of interactions with age-peers of the opposite sex. At that, former images do not become more elaborated but simply are substituted with new ones.