Sleep mediates the relationship between having an autistic child and poor family functioning.

Sleep is an important biological necessity, a lack of which can have many cognitive, psychological, social, and physical impacts. Children with autism are known to present with sleep difficulties more frequently than their typically developing peers but despite this, there is relatively little research looking at the impact of sleep on the family. To investigate the effect of sleep on families of autistic and typically developing (TD) children, we conducted a study of sleep disturbances among children, sleep quality of their parents in association with their family function. In our study, 239 parents of autistic children and 227 parents of TD children participated. These parents completed a survey about their child's sleep disturbances, their own sleep quality, and their family function, along with a series of demographic questions. Analyses indicated that autistic children experience more sleep difficulties than TD peers, that children's sleep disturbances are associated with parental sleep quality and that parents of autistic children report decreased sleep quality compared to parents of TD children. Parental sleep quality, and child sleep quality were both found to partially mediate the relationship between autism diagnosis and family function.