Randomized controlled trial of a sibling support group: Mental health outcomes for siblings of children with autism.

Researchers ran a randomized trial of a sibling support group. All participants were neurotypical brothers or sisters of kids with autism. Half joined the group. Half stayed on a wait-list.

The group met for several weeks. Sessions taught coping skills and shared feelings. After the final meeting the team checked mental-health scores.

Siblings who attended the group showed better mental-health scores than the wait-list kids. The gains were small but real.

Stronger effects appeared when the autistic brother or sister had more severe symptoms.

Amanollahi et al. (2025) ran a similar group and also saw benefits, but they tracked relationship quality instead of mental health. Together the two trials show autism-focused groups help in more than one way.

Kirchhofer et al. (2025) tested the same idea in a mixed group of chronic disorders. Their mental-health boost was weaker. The tighter autism focus in Mulder et al. (2020) may be why they saw clearer gains.

Older studies such as LeFrancois et al. (1993) and Stancliffe et al. (2007) warned that these siblings often carry extra stress. The new trial turns that warning into action: give them a group and the risk drops.

You now have an RCT backing a low-cost group you can run in-house. No PhD required. Ask parents to bring the neurotypical sibling once a week for six to eight sessions. Use ready-made autism-focused lessons. Track mood with a short checklist before and after. If the autistic child shows severe symptoms, expect the biggest payoff.