The participants with ASD were recruited from a local clinic for children with pervasive developmental disorders. Only participants with a clinically defined diagnosis of autism (N = 5), Asperger's syndrome (N = 5), or ASD (N = 3) were recruited2, no participant had a co-morbid diagnosis, or a known specific neurological or genetic condition (e.g., Fragile X, Rett Syndrome) that could account for their diagnosis of ASD. The TD children were recruited from an e-mail list of volunteers and were screened for any history of developmental, neurological, or genetic disorder. No participant had taken medication within 24 h of participation. Written informed consent was obtained from the parents of all participants and verbal assent was obtained by the participants prior to testing. The procedures followed were in accordance with the ethical standards of the South Sheffield NHS ethics committee and the Declaration of Helsinki.
