A: The effects of atomoxetine (0.3, 3 and 10 mg/kg, i.p.) on A: %premature responses, B: latency to magazine, C: latency to correct response and D: %omissions compared with vehicle (saline) and no injection (NI-2), in wildtype (white bars) and NK1R−/− mice (grey bars). Data show mean ± SEM. N = 9–11. Lines linking bars indicate statistical significance of P < 0.05, * indicates P < 0.05 versus vehicle within genotype.