The lack of a valid and interpretable score to track early child development over time is a primary reason for neglecting child development in policymaking. Many instruments exist, but there is no accepted method for comparing their scores across different ages, samples, and instruments. This paper aims (1) to enhance the Development Score…

Objective: To chart the emergence of precursors and early signs of autism spectrum disorder (ASD) and autistic traits in the Avon Longitudinal Study of Parents and Children, a prospective longitudinal cohort study of the surviving offspring of 14,541 pregnant women from southwestern England with an expected delivery date between April 1991 and…

A longitudinal study was conducted to assess (1) the validity of the Denver Prescreening Developmental Questionnaire (DPDQ) in a predominantly black, lower socioeconomic population, and (2) the effect of an educational package in increasing parental accuracy in responses to the DPDQ. Randomly selected mothers of 127 infants enrolled in a follow-up…