I do think that autism is a real disorder. The Theory of mind by Baron Cohen makes much sense to me. The neurobiology between Asperger is very interesting. I guess there is also some defect in the development of mirror neurons: Neuronal systems very important in socialising and mirroring others. But I also believe that psychology in general is not a real science. Thus, I do think that people might wrongly be diagnosed with ASD. Temple Grandin has classic ASD, and you get a lot of insight into this conditions be reading her very introspective writings.