“…Some studies have shown that the presence of non-adopted siblings in the adoptive family increases the risk for behavioral and psychological problems in adopted children, while the presence of adopted siblings decreases such a risk (Barth & Brooks, 1997;Howe, 1997). Other studies, however, either found no effect of family composition on the functioning of children and adolescents who were adopted (Brodzinsky & Brodzinsky, 1992), or found that adopted children in families with adopted and non-adopted children had higher adjustment scores than comparable children in families with adopted children only (Ternay, Wilborn, & Day, 1985). Research on the adoption of older children has also failed to find a consistent relationship between family composition and adoption disruption (Festinger, 1990).…”