Revision of a Parent-Completed Developmental Screening Tool: Ages and Stages Questionnaires

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Abstract
Examined the Ages and Stages Questionnaires (ASQ), a series of 11 developmental questionnaires designed to be completed by parents and caregivers of young children from 4 to 48 months of age. The ASQ were recently revised and additional psychometric data were gathered. Analyses on over 7,000 questionnaires indicated high test-retest reliability, interobserver reliability, and internal consistency Concurrent validity using standardized measures yielded an overall agreement of 85%, with a range of 76–91%. Specificity was high 'across questionnaire intervals while sensitivity was lower and varied across intervals. Use of parent-completed screening tools such as the ASQ is attractive in terms of costeffectiveness, parental involvement, and flexibiliry in administration procedures.

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