Perceived competence and behavioral adjustment of siblings of children with autism.

LeFrancois et al. (1993) compared 30 brothers and sisters of kids with severe autism, 30 siblings of kids with Down syndrome, and 30 siblings of typical kids.

Parents filled out checklists about each child’s behavior, stress level, and how capable they felt their child was at home and at school.

The autism-group siblings showed more worry, sadness, and acting-out than the other two groups.

Yet all groups scored the same on “I can do it” self-ratings and on parent reports of social and academic skill.

Perez et al. (2015) later showed the same extra worries only appear when family stress is already high, explaining why some clinics see troubled siblings and others do not.

Johnson et al. (2009) sharpened the picture: siblings of children who have both autism and intellectual disability show the highest emotional risk, so autism itself is the key driver, not just having any disability.

Benson (2012) reassured families that starting a home ABA program does not make siblings feel worse, easing a common parent fear.

Dudley et al. (2019) repeated the autism-vs-Down comparison with teens themselves answering questions and still found higher stress in the autism group, proving the 1993 parent pattern holds when we ask the siblings directly.

When you intake a new client with severe autism, add the sibling list to your case notes. Hand parents a short SDQ for each brother or sister; if scores top the borderline, refer to the school counselor or a sibling support group. Five extra minutes can stop small worries from growing into bigger behavior problems later.