This study is a cohort longitudinal design, also known as within subject repeated measures' design to measure the impact of an early identification and intervention program being implemented by Amar Seva Sangam (ASSA), an Indian non-government organization in South India. The primary objective of the Early Intervention (EI) Village-Based Rehabilitation (VBR) program is to increase access to early identification and early intervention therapy to enhance physical, cognitive, language, social and emotional development of children with developmental delays. The primary outcome will be the creation of developmental trajectory of girls and boys with developmental delay who are receiving village based early intervention therapy in rural India, aged 0 - 6 years based on the Gross Motor Function Measure - GMFM (children with cerebral palsy only), Functional Independence Measure - wee-FIM, Functional Assessment Checklist for Programming - FACP, Communication Developmental Eclectic Approach to Language Learning - CDDC and Canadian Occupational Performance Measure - COPM. Secondary outcomes will be the effect of therapy compliance rates on development in girls and boys with developmental delay, the effect of therapeutic approach on development in girls and boys with developmental delay, improved enrolment in school for children with developmental delays from age 3 to 6; and, improved parent/caregiver knowledge, attitude, behavior and confidence in caring for their child with developmental delay.