The research discussed in this article focuses on the relationship between siblings in adulthood and the relationship's effects on the siblings themselves. The report begins with a substantial review of the literature on siblings in adulthood, focusing on the meaning of the sibling relationship, methodological problems in studying adult siblings,…

This chapter argues for the value of sibling research in addressing behavioral genetic issues on the etiology of individual differences. The goal of the report is to provide a set of simple and practical examples of sibling analyses in order to highlight the importance of incorporating siblings in future research. It begins with a discussion of…

This volume in the Applied Developmental Psychology Series consists of a collection of papers on current sibling research and theory. Prominent researchers and academicians in developmental psychology present reports on aspects of sibling relations in an effort to better understand individual and family growth. These scholars have dealt with…

The research described in this article addressed the question of why siblings commonly have different developmental outcomes despite their common beginnings. The studies analyzed behavioral development, especially through examination of deviant behaviors and intellectual development, by tracing siblings' different life histories. The work is based…

This study investigated sibling interaction patterns in middle childhood as predictors of adjustment outcomes in males during adolescence and early adulthood using a social interactional perspective. It was theorized that negative interaction during middle childhood with siblings and parents would be the most powerful predictor of adjustment in…