men are less likely than women to disclose about intimate topics (Davidson & Duberman, 1982; Dindia & Allen, 1992; Reisman, 1990; Wheeler & Nezlek, 1977), especially to other men (Doyle, 1989; Morgan, 1976).
Davidson, L., & Duberman, L. (1982). Friendship: Communication and interactional patterns in same-sex dyads. Sex Roles, 8, 809-822.
Reisman, J. M. (1990). Intimacy in same-sex friendships. Sex Roles, 23, 65-80.
Wheeler, L. & Neslek, J. (1977). Sex differences in social participation. Journal of Personality and Social Psychology, 35, 742-754.