Sleep Restriction Therapy (SRT) for Sleep Problems in Children With Autism

Inclusion Criteria: * diagnosed with autism spectrum disorder (based on history, review of available medical records including diagnostic testing, e.g., Autism Diagnostic Observation Schedule and/or Autism Diagnostic Interview-Revised, Childhood Autism Rating Scale-2) * with sleep disturbances (based on clinical interview, and Sleep Disturbance Scale for Children score \> 38) * stable pre-existing medication plans for at least 2 weeks * no planned changes in psychosocial and biomedical interventions during the intervention * an English-speaking parent able to consistently participate in study procedures * reside in California, USA Exclusion Criteria: * parent or child diagnosed with severe psychiatric disorder or unstable medical problem * children with active seizures or epilepsy * primary sleep disorder is a circadian rhythm sleep-wake disorder, as determined by the sleep interview and Children's ChronoType Questionnaire. * current active trial of sleep restriction therapy or history of an adequate trial of sleep restriction therapy.