Measuring nonverbal cognition in toddlers with autism spectrum disorder

There is considerable interest in characterizing cognitive abilities of young children with autism spectrum disorder. Multiple assessment tools are available with many different ways of measuring cognition. In this paper we demonstrate these methods using data from two prior longitudinal studies of autistic toddlers that employed some of the most widely used tools in research to measure early cognition. We emphasize the importance of assessing nonverbal cognition to avoid confounding language and communication impairments with other aspects of cognition. Additionally, we highlight the need for further consideration of adaptive behavior in relation to nonverbal cognition in autistic toddlers.