Attention Deficit Disorder with HyperactivityMethylphenidateLearning DisordersCentral Nervous System StimulantsAttentionHyperkinesisAttention Deficit and Disruptive Behavior DisordersPropylaminesNeuropsychological TestsReceptors, Dopamine D4Bipolar DisorderDiagnostic and Statistical Manual of Mental DisordersMental DisordersImpulsive BehaviorConduct DisorderAdrenergic Uptake InhibitorsCognition DisordersDextroamphetamineReaction Time