Autistic DisorderChild Development Disorders, PervasiveAsperger SyndromeIrritable MoodSocial Behavior DisordersChromosomes, Human, Pair 15Genetic MarkersLinkage DisequilibriumCase-Control StudiesSocial BehaviorLanguage Development DisordersBipolar DisorderMental DisordersRegression (Psychology)Stereotypic Movement DisorderStereotyped BehaviorCommunication DisordersDevelopmental DisabilitiesAnxiety DisordersAttention Deficit Disorder with HyperactivityDiagnostic and Statistical Manual of Mental DisordersMood Disorders