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Several theories of the life course highlight the importance of social connections and ties for coping with transitions that occur at different ages. Individuals rely on family, friends, and colleagues to adapt to these transitions which may in turn change the composition of their networks. Yet, little is known about the association between life cycle transitions and changes in network characteristics. We used fixed effects regression models with three waves of egocentric network data from the UC Berkeley Social Network Study (UCNets) to examine how career- and family-related life cycle transitions during two key life stages-young adulthood and the transition from middle to old age-are associated with network turnover, the proportion of the network comprised of kin, and confidence in receiving support from personal networks. Younger adults experienced churn following a birth and marriage or partnership, while no life transition was associated with changes in proportion kin, and only with the birth of a child did confidence decline. Among older adults, no transition was associated with any measured event, suggesting that older adults maintain more stable relationships compared to young adults and can weather life events without significant disruptions to their networks., Competing Interests: Competing Interests The authors have no competing interests.

Objective: The aim of the study was to provide new tests of the argument that aspects of personal networks affect psychological distress and moderate the effects of negative life events, leveraging new, rich data on two different cohorts., Method: The UCNets project measured psychological distress, life events, and various dimensions of personal networks for 673 50- to 70-year old adults and 485 21- to 30-year old adults. The project used stratified random address based sampling for all the older adults. Such sampling, supplemented with Facebook advertisement and referral sampling, yielded the young adult sample. Networks were measured using several name-eliciting questions and several name descriptors., Results: The findings differed for younger versus older adults. Among young adults, personal network characteristics were not directly associated with, nor did they moderate the effect of negative life events on psychological distress. Unlike younger adults, the presence of supportive network ties, including social companions and emergency helpers, were directly associated with lower distress among older adults, while difficult and demanding ties as well as advisors were directly associated with higher distress. There was limited evidence of buffering among older adults, albeit through the presence of difficult and demanding ties., Conclusions: In the current sample, network exchange roles (i.e., specific types of network support and burden) were associated with psychological distress among older adults while other characteristics of the network, including size, multiplexity, and social participation were not. Further, network support may be best positioned to have direct, as opposed to buffering, effects on psychological well-being., (Copyright © 2019 Elsevier Ltd. All rights reserved.)