Nest leaver or home stayer? Sibling influence on parental home leaving in the United Kingdom

Studies have suggested that the timing of leaving one's parental home can be influenced by a number of factors, such as gender, educational background, and parental characteristics. However, despite empirical evidence showing that siblings may influence one another's life course decisions, intragenerational effects on leaving home have not been adequately studied. In this study, we investigated the extent to which an event of a sibling leaving is associated with one's decision to leave the parental home and how demographic sibling characteristics may impact on the association. We also tested whether the number of siblings who left the parental home first is related to one's timing of leaving. Using data from "Understanding Society: The U.K. Household Longitudinal Study", we studied the process of leaving the parental home among 22,719 children and their siblings. The results indicated a positive relationship between leaving of a sibling and the own event of leaving. When siblings are brothers and have a small age gap, and when the nest-leaving sibling is older than the at-risk children, this relationship is even stronger. Finally, the more nest-leaving siblings one has, the less likely one is to stay at home. The findings provide evidence for cross-sibling effects on parental home leaving, underscoring the role of intragenerational associations with respect to life course events.