The authors of this U.S. review set out to look at the evidence of the impact of sleep problems across the range of children screened for early intervention. Sleep disorders can have an impact on behaviour, cognition, and growth—which are the same areas that can be targeted by early intervention.
They point out that developmental delays and disabilities may also precipitate sleep disorders and that children with developmental delays experience sleep disorders at a higher rate than typically developing children with common types of sleep disorders found in this group being difficulties initiating or maintaining sleep and sleep disordered breathing.
They conclude that as eligibility evaluations for early intervention cover the five developmental domains: adaptive, motor, cognitive, communication, and socio-emotional, that assessing sleep problems within such evaluations could maximize developmental potential by ensuring timely identification, referral, and treatment
Sleep Problems and Early Developmental Delay: Implications for Early Intervention Programs, Bonnick K & Grant R, in Intellectual and Developmental Disabilities, 50, 1, 41-52