Limited research has examined the active ingredients and mechanisms of change of naturalistic developmental behavioral interventions (NDBIs). The present study used an exploratory sequential mixed-methods design to develop a comprehensive Theory of Change of Project ImPACT, an empirically supported NDBI. We used qualitative data from interviews…

Language ability has been associated with emotion regulation (ER) ability. Children on the autism spectrum have greater rates of language delays and lower ER ability. Despite this, autism traits have not been considered or controlled for in past research. This study therefore examined the association between language ability and ER in young…

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…

Few studies examine the effectiveness of community-based early interventions in unselected samples of autistic children, especially those from minoritized backgrounds. These types of studies require attention to strategies for recruitment, retention, data collection, and support for community providers beyond those used in university-based trials.…