GamblingBehavior, AddictiveImpulse Control DisordersImpulsive BehaviorInternal-External ControlNevadaRewardChoice BehaviorMotivationSubstance-Related DisordersPsychiatric Status Rating ScalesPsychotherapy, GroupAnalysis of VarianceCuesCognitive TherapyRisk-TakingPersonality InventoryNeuropsychological TestsQuestionnairesComorbiditySocial EnvironmentAlcoholismModels, PsychologicalMagnetic Resonance ImagingPsychometricsSocial BehaviorInternetAnxietySeverity of Illness IndexProbabilityPatient Acceptance of Health CareDecision MakingReaction TimeSocioeconomic FactorsSex FactorsStatistics, NonparametricChi-Square DistributionAlcohol DrinkingDepressionCross-Sectional StudiesPhotic StimulationPrevalenceCase-Control Studies