 - In addition to qualifying by age and IQ IQ of at least 50, children will meet two of three of the following criteria for ASD PDD-NOS, Autism or Asperger Syndrome: 1 Autism Diagnostic Observation Schedule-Generic, ADOS-G algorithm criteria for ASD or Autism, Lord, Rutter, DiLavore, Risi, 2001 2 Autism Diagnostic Interview-Revised, ADI-R algorithm criteria Lord, Rutter, Le Couteur, 2003 meeting criteria for autism for the social or communication domain by being within 2 points of the algorithm cut-off for autism on the other, or coming within 1 point of the cut-off for autism on both and 3 have clinical judgment of autism, PDD-NOS or Asperger Syndrome by an autism expert. All of the ADOS-G testing sessions will be videotaped with inter-rater reliability being conducted on 20 of children tested. These videotapes will be destroyed following determination of study eligibility for those found not eligible. For those who are eligible, the videotapes will be destroyed after eligibility is determined or, for the 20 used for determining inter-rater reliability, the videotapes will be destroyed following this analysis. Parents will be asked not to start any new intervention or modification of current intervention during the study period unless deemed absolutely necessary. If such a change has to be made, the parents are requested to inform the Principal Investigator and either participation will be discontinued without consideration as a treatment failure or data subsequent to that point will be excluded from analyses. 