To determine whether the change from the highly structured, peer-based life style associated with the college community to more heterogeneous environments would have a significant impact on graduates' social support networks, social support levels of 49 men and 49 women were assessed 1 month prior to college graduation, and 1 and 6 months following graduation. Subjects completed the Personal Support System Survey which measures the importance of and perceived satisfaction with 13 types of social support (love, physical intimacy, companionship, encouragement, acceptance, admiration, satisfaction/altruism, comfort, example, guidance, material assistance, knowledge, honesty) and assesses the composition and operation of the respondent's support network. The results indicated that subjects reported changes in their support networks following graduation. Although network size and the number of family members showed no change, the number of friendships which subjects reported declined while network density increased after graduation. The number of daily and yearly contact supporters also changed over time. Subjects' responses concerning the importance of support remained constant, while satisfaction with support declined in the post-graduation administrations. Significant sex differences were also revealed. Across all assessment points, men had more daily support members while women had more monthly support members. Women also felt that support was of greater importance than did men. Practitioners need to understand the social implications of college graduation and other life transitions and to identify individuals who may need additional sources of social support. (NB)