Table 3.

Means (standard deviations) for demographic and clinical characteristics of PD patients and healthy controls in Experiment 2.

Group	Number	Age	BDI-II	MMSE	UPSRD III
HMD (n = 12)	12	65.17 (13.54)	14.25 (9.78)	27.17 (1.90)	50.25 (16.04)
LMD (n = 7)	7	67.86 (11.84)	10.29 (3.77)	27.27 (1.80)	21.43 (10.81)
HC (n = 15)	5	65.27 (12.19)	7.00 (4.80)	26.93 (3.28)

HMD: PD patients with high motor dysfunction (≧35 on UPDRS-III); LMD: PD patients with low motor dysfunction (<35 on UPDRS-III); HC: healthy controls. BDI-II: Beck Depression Inventory II; MMSE: Mini Mental State Examination; UPDRS-III: motor section of the Unified Parkinson's Disease Rating Scale.