Preliminary evidence suggests that children with Autism Spectrum Disorders (ASD) may be characterized by atypical features of cry during early infancy. This project teams researchers with expertise in infant cry production and autism in infancy and early childhood as well as a lab with extensive experience in the development of acoustic analysis and speech recognition tools. This team will work collaboratively to develop a new acoustic analysis system for infant cry based on state-of-the-art acoustical engineering and computer technology. This research is highly relevant to both early identification and intervention for children with autism. By developing a system that can identify atypical aspects of cry in infancy associated with this disorder, this research will aide in the development of more sensitive and specific screening and diagnostic tools for use in infancy. In addition, this research will improve understanding of the roots and course of communication impairments in autism.