CannabisPsychoses, Substance-InducedPsychotic DisordersMarijuana AbuseMarijuana SmokingDronabinolSchizophreniaAffective Disorders, PsychoticProdromal SymptomsSchizophrenic PsychologyCannabinoidsCannabidiolParanoid DisordersDelusionsPsychiatric Status Rating ScalesEarly Medical InterventionHallucinationsAntipsychotic AgentsSchizotypal Personality DisorderCannabinolSchizophrenia, ParanoidBipolar DisorderSubstance-Related DisordersAge of OnsetDiagnostic and Statistical Manual of Mental DisordersStreet DrugsHallucinogensDelirium, Dementia, Amnestic, Cognitive DisordersSubstance Withdrawal SyndromeNeuropsychological TestsRisk FactorsSubstance Abuse DetectionSocial AdjustmentCognition DisordersMental DisordersDiagnosis, Dual (Psychiatry)Psychotropic DrugsReceptor, Cannabinoid, CB1Longitudinal StudiesEarly DiagnosisBrief Psychiatric Rating ScaleSchizophrenia, ChildhoodComorbidityMagnetic Resonance ImagingCognitive TherapyCommunity Mental Health ServicesSocial EnvironmentRisperidoneDiseases in TwinsInterview, PsychologicalCatechol O-MethyltransferaseAlcohol DrinkingAnalysis of VarianceCase-Control StudiesBrainParental DeathCatatoniaCannabinoid Receptor AgonistsAlcoholismTime FactorsExecutive FunctionStudent DropoutsCannabinoid Receptor ModulatorsFollow-Up StudiesPrecipitating FactorsFamilyHospitals, PsychiatricPsychometricsGas Chromatography-Mass SpectrometryHaloperidolSeverity of Illness IndexDrug UsersCognitionDepressive DisorderDisease ProgressionMental Health ServicesQuestionnairesCross-Sectional StudiesDepersonalizationPsychomotor AgitationTwins, MonozygoticGenetic Predisposition to DiseaseModels, PsychologicalCocaine-Related DisordersPsychomotor PerformanceSmokingCohort StudiesThinkingPrevalenceSex FactorsReceptors, CannabinoidProjective TechniquesVerbal LearningSchizophrenic LanguageAge FactorsTobacco Use DisorderIncestFunctional NeuroimagingControl GroupsAmphetamine-Related Disorders