01520nas a2200229 4500000000100000000000100001008004100002260003500043653002300078653001900101653002300120653001800143653001300161100001700174700002800191245009600219300001000315490000700325520093000332022001401262020001401276 2020 d c06/2020bElsevier Espana S.L.U10aChildren wellbeing10aClinical group10aFamily functioning10aFamily stress10aSiblings1 aLaura Merino1 aAna Martínez-Pampliega00aSibling relationship and children s adjustment to contexts with high level of family stress a27-320 v263 aIntroduction and objectives The main aim is to analyze the moderating role of sibling relationships on the impact of family functioning on children's wellbeing, especially with high levels of family stress. Materials and methods In this study 61 parents with2 or more under-18 years-old children were assigned to either the clinical or comparative group. These variables are measured: family functioning, family stress, communication and satisfaction, behavior problems, academic performance and sibling relationship. Results The results confirm that sibling relationship moderates the impact of family functioning in the adaptation of the children, buffering this impact especially in the eldest son/daughter. Moreover, this moderating effect is greater in families with higher levels of family stress. Conclusion The relevance of fostering positive sibling relationships as a protective element is highlighted. a1134-7937 a2174-0437