Early childhood is a critical period characterized by rapid development of motor and language skills. Reliably assessing motor and language development in early childhood is difficult, and there is a lack of agreement on measurement tool use. This scoping review aims to identify measurement tools used to examine motor and language skills in…

Developmental screens are often used in nonstandardized conditions, such as pediatric waiting rooms, despite validation under standardized conditions. We examined the reproducibility of the Ages and Stages Questionnaire (ASQ), a developmental screening instrument commonly used in pediatric practices, under standardized versus nonstandardized…

Background: Children born very low birth weight (VLBW) are at increased risk for regulatory difficulties. However, identifying toddlers at risk has been impeded by a lack of screening measures appropriate for this population. Methods: We studied the nature of dysregulation in toddlers born VLBW (N = 32) using the Infant-Toddler Social and…

Four tenets of dynamic systems theory related to motor development in infants are identified: coupling of perception and action; development of adaptable and functional movement synergies; phase shifts in which new movement patterns are explored and selected; and identification of the constraining and facilitating forces of motor development. Four…

This article describes the use of measures of functional assessment of essential activities in self-care, mobility, communication, and social cognition in preschool children. An overview of functional assessment is provided, and psychometric properties of the various tests are described. Case studies illustrate the value of using functional…