Evaluation of Early Intervention in Washington State

This report describes options for study designs to evaluate the impact of early intervention on infants and toddlers, birth to three, with disabilities or developmental delays and their families, one of Washington State's most vulnerable populations. Information was gathered from an extensive literature review, a survey of local assessment efforts in Washington State, a technical data inventory, and consultation with stakeholders such as service providers, agency personnel (Department of Health, Department of Social and Health Services, and the Office of Superintendent of Public Instruction), parents, and community supporters. Research and Data Analysis convinced an Advisory Group to provide PROFESSIONAL expertise in reviewing and commenting on materials prepared for this project