Table 2. Learning in the RAVLT and AFLT for PD and control participants in both experimental sessions.

	PD			Control
	First trial	Final	Learning scores	First trial	Final trial	Learning scores
RAVLT ON	5.48 (0.32)	9.00 (0.47)	3.52 (0.43)	6.33 (0.50)	10.70 (0.45)	4.37 (0.37)
RAVLT OFF	5.14 (0.34)	9.03 (0.44)	3.90 (0.35)	6.66 (0.54)	10.59 (0.44)	3.93 (0.47)
AFLT ON	2.31 (0.31)	7.80 (0.58)	5.48 (0.44)	2.79 (0.31)	9.33 (0.66)	6.59 (0.47)
AFLT OFF	1.90 (0.25)	8.01 (0.63)	6.10 (0.54)	3.04 (0.35)	9.41 (0.64)	6.37 (0.54)

Mean number of items recalled (SEM) on the first and final immediate-recall trials in the RAVLT and AFLT are presented separately for PD and control participants in the ON and OFF medication Sessions. Learning scores, calculated as total number of items recalled on the final minus the first study-immediate recall trial, also appear. Scores for control participants are also displayed according to the ON-OFF order of the PD patients to whom they were matched even though no healthy controls were treated with dopaminergic medication at any time.