Child Development Disorders, PervasiveAutistic DisorderAsperger SyndromeFetal Alcohol Spectrum DisordersSocial BehaviorLanguage Development DisordersStereotypic Movement DisorderStereotyped BehaviorRegression (Psychology)Developmental DisabilitiesBipolar DisorderCommunication DisordersMental DisordersAttention Deficit Disorder with HyperactivityDiagnostic and Statistical Manual of Mental DisordersTheory of MindAnxiety DisordersHealth Planning CouncilsIntellectual DisabilityIntelligenceSiblingsEndophenotypesBrainEarly Intervention (Education)Social Behavior DisordersMood DisordersNeuropsychological TestsCase-Control StudiesPsychiatric Status Rating ScalesVerbal BehaviorLanguage DisordersLanguage TestsIntelligence TestsPlay and PlaythingsSocial PerceptionMagnetic Resonance ImagingInterpersonal RelationsLanguage DevelopmentChild DevelopmentGenetic Predisposition to DiseaseNonverbal CommunicationFaceFacial ExpressionParentsObsessive-Compulsive DisorderCognition DisordersAttentionChild BehaviorPersonality AssessmentInfant BehaviorFragile X SyndromeMacrocephalyImitative BehaviorDNA Copy Number VariationsCompulsive BehaviorSpeech DisordersPhenotypeBrain MappingChild PsychiatryComorbidityCommunicationIrritable MoodNeural PathwaysSeverity of Illness IndexPsychological TestsSchizophreniaChild Behavior DisordersLanguageRett SyndromeWechsler ScalesLanguage TherapyTic DisordersCognitionAttention Deficit and Disruptive Behavior DisordersAnalysis of VarianceCell Adhesion Molecules, NeuronalGroomingSensation DisordersSpeech TherapyMethyl-CpG-Binding Protein 2Psychotropic DrugsDepressive Disorder, MajorBehavior TherapyPsychotic DisordersEarly DiagnosisChild LanguageEye Movement MeasurementsSpeechPsychometricsEmotionsEducation, SpecialQuestionnairesAge FactorsGenetic Association StudiesNerve Tissue ProteinsPregnancyDepressive DisorderSleep DisordersSibling RelationsMutation