The first year of life for most children involves some level of interrupted sleep. There are circadian rhythms to pick up and developmental milestones to accomodate. But once your baby grows up you might expect their sleep to become a smoother affair. Regular bed times, sleeping through the night and a reasonable awake time. Unfortunately for parents with children on the spectrum this isn't always the case. Professor Amanda Richdale is from the Olga Tennison Autism Research Centre and the School of Psychology and Public Health at Latrobe University. Amanda explains what the research has found out about sleep and autism.