Research evaluating augmentative and alternative communication (AAC) options shows general support for various strategies (e.g., manual sign, picture exchange) in teaching individuals with autism (ASD) and intellectual disabilities (ID) to request basic wants and needs. However, the overall quality and quantity of research is diluted by the…

This dissertation explores the hypothesis that language processing proceeds in "windows" that correspond to representational units, where sensory signals are integrated according to time-scales that correspond to the rate of the input. To investigate universal mechanisms, a comparison of signed and spoken languages is necessary. Underlying the…