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Adolescents show higher levels of impulsive behavior. Premature responses as measured by total nosepokes during the delay period (A), total initiated trials (B), average number of omitted trials (C), and proportion of correct trials of those attempted (D) are shown for adults and adolescents for the three delay lengths. Group averages are shown for each delay averaged over 3 d, with error bars representing the SEM; *p < 0.05, #p = 0.05.
