Table 3

Neuropsychology results of the patients with Parkinson’s disease studied compared with age matched control data

Neuropsychological testParkinson’s diseaseControl data
WAIS-R
Digit span9.6 (2.3)10.0 (3.0)
Vocabulary11.1 (3.0)10.0 (3.0)
Comprehensions14.6 (2.9)10.0 (3.0)
Similarities13.1 (3.2)10.0 (3.0)
Block design9.9 (1.7)10.0 (3.0)
Object assembly7.9 (3.0)10.0 (3.0)
Folstein AMT28.3 (1.6)29.2 (1.3)
Boston naming test54.9 (5.1)56.7 (3.0)
FAS28.4 (1.7)37.6 (10.9)
CVLT35.4 (11.7)47.9 (10.0)
Verbal IQ114.8 (18.5)100 (15)
Performance IQ93.5 (10.8)100 (15)
Fullscale IQ106.1 (14.0)100 (15)
NART verbal IQ108.6 (11.6)100 (15)
NART performance IQ109.7 (11.3)100 (15)
NART full scale IQ110.4 (12.7)100 (15)
Difference verbal IQ−6.8 (12.1)
Difference performance IQ16.2 (11.3)
Difference full scale IQ4.3 (9.4)*
Beck depression inventory9.2 (8.2)
Geriatric depression scale3.5 (2.8)
  • Difference in verbal, performance and fullscale IQ calculated as NART premorbid estimate of IQ minus actual IQ as calculated from the WAIS-R. Control reference ranges quoted as means for men and women, for 60-64 year age group, with education <12 years where applicable.25 26 28 30 31 *p<0.05; reductions in NAA/Cr ratios of right and left temporoparietal cortex combined and neuropsychometric test.