Sibling relationships, the longest‐lasting relationships in most people's lives, have been understudied compared to other family relationships. The goal of this review is to increase understanding of sibling relationships from midlife to older adulthood by integrating aspects of psychological and sociological theories, including social exchange, family systems, and life course perspectives, to better understand the structure, function, processes, and meaning of sibling relationships in middle and later life. This theoretical integration promotes a comprehensive study of sibling relationships by considering individual and family characteristics as well as the broader social and cultural contexts in which sibling ties are situated. Further, this integration facilitates the study of sibling relationships across time. In addition to reviewing current knowledge about sibling relationships in adulthood, we discuss directions for future research, the methodological practices necessary to advance this research, and the translational significance of research on adult sibling relationships for aging populations.

中文翻译：

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成年的兄弟姐妹关系：研究发现和新领域

与其他家庭关系相比，同胞关系是大多数人一生中寿命最长的关系。这篇综述的目的是通过整合心理学和社会学方面的知识，包括社会交流，家庭制度和人生历程的观点，以更好地理解结构，功能，过程和意义，从而加深对从中年到成年的同胞关系的理解。和中后期的同胞关系 这种理论上的融合通过考虑个人和家庭特征以及同胞关系所处的更广泛的社会和文化背景，促进了对同胞关系的全面研究。此外，这种整合有助于研究跨时间的同胞关系。