Autistic DisorderChild Development Disorders, PervasiveReflex, AcousticCatatoniaAsperger SyndromeSpectrum AnalysisCommunication DisordersLanguage TherapyFourier AnalysisSignal Processing, Computer-AssistedUltrasonographyUltrasonicsFetal Alcohol Spectrum DisordersSocial BehaviorInterpersonal RelationsElectroencephalographyAlgorithmsHeart RateBipolar DisorderLanguage Development DisordersChild BehaviorMental DisordersRegression (Psychology)Spectrum Analysis, RamanAttention Deficit Disorder with HyperactivityMood DisordersDisabled ChildrenAnxiety DisordersDevelopmental DisabilitiesDiagnostic and Statistical Manual of Mental DisordersChild WelfareStereotyped BehaviorStereotypic Movement DisorderChild Behavior DisordersParentsIntellectual DisabilityCase-Control Studies