Table 1. Effects of 0.5 mg/kg amphetamine (AMPH), the CB1 receptor antagonist/inverse agonist SR141716A (SR) and their combination on measures of attentional function, compulsivity, and motivation in the 5-CSRTT.

Treatment (mg/kg)	Accuracy (%)	Perseverative responses	Correct response latency (ms)	Omissions	Feeder latency (ms)
Vehicle–Vehicle<\emph>	94.6±0.9	6.8±1.6	598±22	10.5±3.1	1632±106
Vehicle–SR 1<\emph>	94.8±0.8	7.0±1.0	627±34	12.8±4.0	1727±137
Vehicle–SR 3<\emph>	93.0±1.5	6.4±1.1	620±31	13.2±3.6	2038±365
AMPH–Vehicle<\emph>	86.2±1.4**	6.4±1.4	534±21*	8.5±2.5	1441±101
AMPH–SR 1<\emph>	88.7±1.0**	15.6±5.4	564±25	7.6±1.6	2139±342
AMPH–SR 3<\emph>	89.8±1.3** #	12.2±2.4	577±20	9.1±1.4	2168±359

In total n = 13 animals were included in the analyses and data depict mean±SEM.

*p<0.05.

**p<0.005 versus Vehicle-Vehicle.

^# p<0.05 compared to AMPH-Vehicle.