Part C of the Individuals with Disabilities Education Act (IDEA) provides funding to states to provide services for children from birth to three years of age with developmental delays and disabilities. States have flexibility--and therefore variation--in determining the criteria for eligibility. A study published in the Journal of Policy and Practice in Intellectual Disabilities examines the reasons why infants and toddlers entering Part C early intervention services are eligible. Researchers addressed three main questions: (1) How do service providers describe why infants and toddlers are eligible for services? (2) What demographic characteristics are associated with service providers' descriptions of eligibility for services? and (3) How do parents describe why their child is receiving services and how does this compare with service providers' descriptions of reasons for eligibility? The findings, summarized in this report yield important information about children receiving early intervention and have the potential to shape the services states provide and therefore the outcomes that children experience. [This FPG Snapshot was produced by the FPG Child Development Institute at the University of North Carolina at Chapel Hill.]