Siblings relationships of children with autism.

Gabriels et al. (2001) asked 58 brothers and sisters about their bond. One group had a sibling with autism, one with Down syndrome, and one with no disability. Kids filled out a picture form that rated closeness, help, and fights. The study was done at home or by mail.

Siblings of children with autism felt less close, gave less help, and showed less caring than both other groups. Surprisingly, they also fought and competed less than brothers and sisters in regular families. Less warmth, but also less conflict.

García-López et al. (2016) later saw the same pattern in teens: autism lagged behind Down syndrome and typical kids in every social-sex area. The cold sibling bond seems to last.

Doughty et al. (2010) found the same chill in grown-ups. Men with more autistic traits felt less trust and intimacy in their marriages. The social gap starts young and echoes later.

Celani (2002) helps explain why. In that lab study, kids with autism picked objects over people. If people are not rewarding, siblings will feel less back-and-forth warmth.

You can warm up the sibling bond. Start by teaching the child with autism to hand a toy, share a snack, or give a high-five to brother or sister. Reinforce those tiny bids with big praise and bubbles. At the same time, coach the typical sibling to wait, label the bid, and respond. Five extra minutes of this each session can turn “less close” into “we have our own game.”