The sample had 331 participants with 226 males and 70 females receiving an ASD diagnosis. The evaluation consisted of the following: (1) A replication of the Exploratory Factor Analysis (EFA) reported ...

Recent updates have been proposed to the Autism Diagnostic Observation Schedule-2 Module 4 diagnostic algorithm. This new algorithm, however, has not yet been validated in an independent sample ...

This revision improves an instrument already viewed as "the gold standard" for observational assessment of autism spectrum disorder (ASD). With updated protocols, revised algorithms, a new Comparison ...