Table 1.

Demographic characteristics of participants in Experiment 1

	Parkinson's patients	Healthy controls
Age	63.8 (7.8)	65.7 (8.3)
Education	16.1 (1.7)	16.2 (1.6)
MMSE	29.5 (0.8)	29.5 (0.6)
COWAT	44.1 (9.7)	44.6 (11.3)
NAART	17.3 (5.2)	15.8 (8.5)
Digit span	11.9 (1.5)	12.0 (1.9)
UPDRS	31.7 (15.5)	—
Years since onset	7.6 (6.9)	—

Table shows mean (SD). MMSE, Mini-Mental State Examination; COWAT, Controlled Oral Word Association Test; NAART, North American Adult Reading Test; UPDRS, Unified Parkinson's Disease Rating Scale.

Groups did not differ on any measures (values of p > 0.5).