Key points are not available for this paper at this time.
Yvonne M. Caldera, Aletha C. Huston, Marion O'Brien, Social Interactions and Play Patterns of Parents and Toddlers with Feminine, Masculine, and Neutral Toys, Child Development, Vol. 60, No. 1 (Feb., 1989), pp. 70-76
Caldera et al. (1989) studied this question.