Exploring sleep quality of young children with autism spectrum disorder and disruptive behaviors.

•No age difference between good and poor sleepers in young children with ASD and disruptive behaviors were seen.•Likewise, the good and poor sleepers did not significantly differ in IQ.•These findings add strong support for the need to screen for sleep disturbances in all children with ASD, regardless of age and cognitive level.•In contrast, poor sleepers exhibited significant more daytime behaviors.•Parents of the poor sleep group experienced significantly more stress.