The adjustment of non-disabled siblings of children with autism.

Stancliffe et al. (2007) looked at brothers and sisters who do not have autism but live with an autistic sibling. They asked how family money, parent stress, and other life pressures shape these kids' feelings and behavior.

The team used surveys and parent reports to rate each child's mood, friendships, and problem behaviors.

When families had few money or health worries, the typical siblings did as well as any other kid. Yet when piles of risk stacked up—low income, single parent, high stress—the same siblings showed more sadness, worry, and acting out.

In short, risk level flips the outcome: low risk equals fine adjustment; high risk equals trouble.

LeFrancois et al. (1993) and Hastings (2003) saw more behavior problems no matter what, but they did not measure family risk. Stancliffe et al. (2007) show those early studies were likely sampling stressed families, so the picture is not always gloomy.

Perez et al. (2015) later added "broader autism phenotype" and family stress as moderators. Their data line up with J et al.: family stress is the key lever, not just the autism label.

Giallo et al. (2006) also found parent routines and stress matter more than child coping skills, echoing the risk-factor message of Stancliffe et al. (2007).

During intake, rate family risk—money, support, stress—alongside the autism assessment. If risk is low, reassure parents their typical child is likely fine. If risk is high, refer that brother or sister for counseling early, teach parents stress-busters, and schedule sibling check-ins every six months.