Sex roles and sex differences in grandparent-grandchild relationships have begun to attract the attention of researchers in the field of extended family relations. Male (N=184) and female (N=221) students of a rural Maine high school responded to a questionnaire designed to examine sex differences in interactions between adolescents and their grandparents. The results showed that female grandchildren were more likely than male grandchildren to have learned a specific skill from grandparents, but there were no significant differences between male and female grandchildren on six other types of interactions: doing work for grandparents, having personal conversations with grandparents, talking about family history, grandparents telling stories about adolescents' parents, grandparents and grandchildren going on trips together, and grandparents giving advice. Female adolescents were no more likely than male adolescents to report being encouraged by parents to visit or talk to grandparents. Adolescents of both sexes reported that the majority of skills learned from grandparents had been taught by a same-sexed grandparent, and sex of grandparents was a stronger predictor of skill transmission than was maternal or paternal lineage. The specific types of skills learned from grandparents were largely in conformity with current sex role stereotypes. Eighteen reference items are listed. (Author/NRB)