. Author manuscript; available in PMC: 2014 Jul 1.

Published in final edited form as: Neurosci Biobehav Rev. 2012 Sep 23;37(6):1139–1149. doi: 10.1016/j.neubiorev.2012.09.007

Table 1.

Effects of amphetamine (AMPH) on task performance. Total trials were unaffected by any amphetamine dose. There was a trend towards a main effect of Amphetamine Dose to reduce total correct responses [F(3, 36) = 2.58, p = 0.07]. A main effect of Amphetamine Dose on premature responses before the prime was observed [F(3, 36) = 6.96, p < 0.001]; post hoc testing confirmed that premature responses were increased after each amphetamine dose compared to saline (p < 0.01 for 0.25 mg/kg, p < 0.001 for 0.5 mg/kg, p < 0.05 for 1 mg/kg).

Data were analyzed using one-way repeated measures ANOVA. Post hoc comparisons of significant effects were conducted using Newman-Keuls tests. Values are expressed as mean ± SEM.

	saline	0.25 mg/kg	0.5 mg/kg	1 mg/kg
trials	111.69 ± 7.01	116.85 ± 8.11	95.08 ± 12.72	98.00 ± 11.22
total correct responses	40.23 ± 4.40	38.62 ± 3.47	31.38 ± 5.61	27.54 ± 4.52^†
premature responses	8.00 ± 1.51	35.08 ± 6.93**	40.69 ± 9.95***	26.23 ± 6.56*

Asterisks (*p < 0.05, **p < 0.01, ***p < 0.001) denote significant differences and dagger symbol (†) denotes a trend toward difference compared with performance after saline administration.