Attention Deficit Disorder with HyperactivityMethylphenidateLearning DisordersCentral Nervous System StimulantsAttentionHyperkinesisAttention Deficit and Disruptive Behavior DisordersPropylaminesConduct DisorderNeuropsychological TestsReceptors, Dopamine D4Impulsive BehaviorMental DisordersBipolar DisorderDiagnostic and Statistical Manual of Mental DisordersAdrenergic Uptake InhibitorsDextroamphetamineAnxiety DisordersReaction Time