Table 1.

Means and standard deviations for task performance per drug condition

	Drug condition
	Placebo		ʟ-DOPA
	M	SD	M	SD
Accuracy	0.81	0.13	0.83	0.12
Hit rate	0.43	0.13	0.44	0.14
False alarm rate	0.12	0.14	0.11	0.12
D-prime	0.89	0.54	0.98	0.48
Response bias	0.63	0.27	0.68	0.33