The reverberations of autism spectrum disorders among parents and siblings can be complex. Parents may grapple with the impact of their child's initial diagnosis, wrestle with the tension between their professional ambitions and family obligations, and labor to maintain a healthy union with their partners. Brothers and sisters may be given less attention, asked to assume a more adult role than they feel ready for, or strive for meaningful connection and communication with their sibling and parents.

Although the energy of clinicians, teachers, and other professionals working with...