We propose a study which will combine multiple modalities in evaluating the treatment response of children with autism spectrum disorders (ASD) to acetyl-choline esterase (AChE) inhibitors and choline supplements. The primary objective of the study is to examine the efficacy of this treatment in improving core autistic symptoms. The Secondary objective of the study is to evaluate the safety and tolerability of the treatment protocol in ASD children. Exploratory objectives include evaluation of the influence of the treatment on linguistic performance, comorbid behaviors, adaptive functioning and executive functions.