It is now axiomatic that challenging behaviors are defined more profitably by their functions (their motivations) than by their topographies (what they look like). The notion that challenging behaviors can be defined on the basis of their function has led in the past 30 years to a dramatically reconfigured approach to assessment and intervention.…

The increased prevalence of autism spectrum disorder (ASD) and its detection during the first 3 years of life have substantial relevance for early intervention. The purpose of this article is to summarize current scientific and policy information on early identification and early intervention for infants and toddlers with ASD and their families.…

An increasing need exists in the field of early intervention for effective approaches to address challenging behavior in early childhood settings. This need is driven by the growing number of preschool children reported to have challenging behavior and the increasing knowledge base about the long-term outcomes for children who engage in problem…