“…In the general field of sibling studies, prominent researchers have highlighted the importance of sibling relationships, notably in the development of social and relational skills (Feinberg, Sakuma, Hostetler, & Mc Hale, 2013;Stormshak, Bellanti, & Bierman, 1996;Sulloway, 2010). For instance, sibling warmth is linked to peer acceptance and social competence in childhood (Stormshak et al, 1996), while conflictual and coercive sibling relationships have been associated with lower peer/social competence, lower school attachment, and risky behaviors (Feinberg et al, 2013).…”