Third Edition (ASQ-3), to help you keep track of your child's development. The questionnaire may be provided every 2-, 4- or 6-month period. You will be asked to answer questions
(2011). Examination of the cut-off scores determined by the Ages and Stages Questionnaire in a population-based sample of 6 month-old Norwegian infants. BMC Pediatrics, 11, 117. https://doi.org/10.1186/1471-2431-11-117 Armijo, I., Schonhaut, L., & Cordero, M. (2015). Validation of...
12 months later. Reliability and validity of the 67-item questionnaire were determined respectively by test–retest reliability and internal consistency analysis, as well as by construct validity analyses. The Cox regression model and the maximum likelihood method were used to fix a model allowing cal...