Using play constructions as a projective technique of investigation, Erik Erikson (1951) concluded from his observation of preadolescents that, during this developmental period, play constructions are largely determined by psychosexual differences. Erikson suggested that only observation of subjects in a younger and older developmental period could determine whether the differences were real or reflected oncoming sexual maturation in his subjects. The present study tested the hypothesis that there are no significant male/female differences in the height of structures, in the number of enclosures, or in the amount of activity present in the constructions of six-year olds. The experimenter observed the elementary school play constructions of 17 male and 17 female subjects, who were instructed to build and relate an exciting story. No significant differences were found between male/female constructions except in the number of furniture pieces used, where females were observed to use more funiture than males, which could be accounted for by chance. This data supported the hypothesis, except in the case of furniture usage, of no significant differences in the play configurations of six-year-olds. The data suggests that males and females may not be limited by their knowledge of differences in sexual morphology and/or function. (Author)