Advancing Social-Communication and Play (ASAP) is a classroom-based intervention targeting the social-communication and play development of preschool-age children with autism spectrum disorder. We used a multimethod approach to measuring intervention fidelity, including adherence, exposure, treatment differentiation, and quality of treatment…

Momentary time sampling, partial-interval recording, and event coding are observational coding methods commonly used to examine the social and challenging behaviors of children at risk for or with developmental delays or disabilities. Yet there is limited research comparing the accuracy of and relationship between these three coding methods. By…