The development of copying behaviours of a group of infants from 9 to 15 months of age is analysed. These behaviours are classified according to their type (mimetic or imitated) and function (instrumental, social or hybrid). The function of the behaviours is derived from observable indicators linked to dyadic interaction. Mimetic behaviours are…

This study aimed to replicate and extend findings from the only known study that has conducted latent profile analysis of developmental profiles, measured by the Battelle Developmental Inventory, for children in Early Intervention (EI). Children (N = 57,966) who were enrolled in Massachusetts EI sites between 2011 and 2019 and completed a Battelle…

Advances in neonatal technology have improved survival rates of children born at lower and lower birthweight and after fewer and fewer weeks of gestation. However, these children are at increased risk of experiencing developmental delays. As weeks of gestation and birthweight decrease, the risk of developmental impairment and severity increases.…

Actual and theoretical cases are presented in which the Battelle Developmental Inventory was used in infant assessment. Age-related discontinuities reveal that, for children whose chronological age abuts one of the cut-off points between age categories, radically different summary scores can be obtained from one day to the next despite identical…

Examination of developmental scores of 198 infants and young children with Down's Syndrome attending exemplary early intervention programs found more similarity to other children in Personal Social and Adaptive Domains and less similarity in Communication and Cognitive Domains of the Battelle Developmental Inventory. These differences were…