1. Center for Autism Research, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.
2. Department of Psychology, George Mason University, Fairfax, Virginia, USA.
3. Department of Psychological and Brain Sciences, Drexel University, Philadelphia, Pennsylvania, USA.
4. Department Speech, Language, and Hearing Sciences, The George Washington University, Washington, District of Columbia, USA.
5. Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.