Identifying the role of siblings in adolescent decision-making: A developmental processes approach

Adolescence represents a period of opportunity in decision-making as developmental motivations and processes shift, particularly in social contexts. Sibling relationships may be especially influential in adolescent decision-making, as siblings spend a disproportionate amount of time with one another and can affect how adolescents think, feel, and behave. However, the ways in which siblings may shape adolescent decision-making through psychological, behavioral, and neurological processes, particularly their interactions, are less well known. This review introduces the developmental processes approach to understanding adolescent decision-making in the sibling context by reviewing patterns in the literature as to how each developmental process in sibling contexts may contribute to adolescent decision-making. Interdisciplinary collaborations across theories and methods (i.e., surveys, observations, and neuroimaging) can contribute to a more holistic understanding of how siblings may shape adolescent decision-making, for better and for worse. Further, this approach can inform practice through sibling-focused prevention programs and other sibling-focused programming (e.g., government, nonprofit) in promoting adaptive adolescent decision-making.