Research Information System
Applied Neuropsychology: Child, 2026 (SCI-Expanded, Scopus)
This study aimed to develop the Comprehensive School Readiness Assessment Scale (COSRAS), a multidimensional instrument designed to evaluate school readiness in children aged 57–72 months. Scale development followed DeVellis’s framework. An initial item pool of 216 items was generated based on developmental, learning-related, and functional school readiness constructs and subsequently refined through expert review to 182 items. The finalized scale was completed by teachers of 1813 children, and test–retest reliability data were obtained from 386 teachers. Content validity indices were high, ranging from 0.892 to 1.000. Exploratory and confirmatory factor analyses supported the proposed eight-factor structure, demonstrating excellent model fit (CFI = 0.999; RMSEA = 0.000–0.009). Convergent validity with the Primary School Readiness Scale was strong (r = 0.665–0.695). The internal consistency of the scale was excellent across all domains (α = 0.916–0.969), and test–retest reliability was high (ICC > 0.990). COSRAS demonstrates strong psychometric properties and provides a comprehensive assessment of school readiness by integrating developmental competencies, learning-related skills, and functional performance. The scale enables early identification of children who may be at risk for neurodevelopmental or learning-related challenges before school entry. COSRAS may assist educators and allied professionals in early childhood and school-based settings by offering domain-specific profiles that inform instructional planning, individualized supports, and early intervention strategies.