In this exploratory study, 13 children who had siblings with Down syndrome and 11 children with typically developing siblings were interviewed about general anxiety and specific worries concerning their sibling. Parents completed corresponding measures regarding the child participant's anxieties as well as a general measure of child behavior. Results indicated that siblings of children with Down syndrome had more sibling-specific worries and slightly heightened internalizing behavior as compared to controls. Parents of siblings with Down syndrome reported more worries than did the control parents.
Holsen '99, Laura M., "Specific Worries in Siblings of Children with Down Syndrome" (1999). Honors Projects. 82.