In assessing the concept of sex-role typing of adult activities, this study required subjects to add male or female adult figures to 12 pictures illustrating different activities. Randomly chosen, participants included ten 4-year-olds enrolled in a female teacher's class and twenty 6-year-olds (10 from a male teacher's and 10 from a female teacher's class). Results suggested (1) that children's concept of sex-role typing changes between the ages of 4 and 6 years in the direction of greater conformity with traditional stereotypes, and (2) that presenting children with personal experiences of atypical role occupants has some effect, although perhaps less than might be anticipated. (Author/BJD)