UncertaintyClinical Chemistry TestsReproducibility of ResultsRisk-TakingImpulsive BehaviorDecision MakingAdolescent BehaviorMantodeaUnsafe SexGamblingSexual BehaviorEconomicsAdolescent DevelopmentWounds and InjuriesAccident PreventionSexual PartnersQuestionnairesGames, ExperimentalChoice BehaviorRewardCondomsAnalysis of Variance