Table 2: Cognitive characteristics of the subjects.

Test measures by domainSample mean score (SD)Total possible score

Global cognitive functioning
 Mini-Mental Status Exam (MMSE)28.4 (1.3)30
 Wechsler Abbreviated Scale of Intelligence (WASI)112.3 (12.4)95% is 149–160
Language
 WASI Vocabulary Subtest62.4 (10.4)80
 Category Fluency for Animals (Animals)23.8 (5.5)1-minute limit
Visual-spatial
 Complex Figure Test (CFT-Copy)30.9 (4.2)36
 WASI Matrix Reasoning Subtest25.9 (4.9)35 (12–44 yrs) or 32 (45–79 yrs)
Memory
 California Verbal Learning Test (CVLT)
  Immediate recall5.4 (1.8)16
  Delayed recall11.0 (3.2)16
  Recognition (Yes/No)3.1 (0.8)−4 to 4
 Complex Figure Test (CFT)
  Immediate recall15.9 (5.3)36
  Delayed recall15.4 (5.5)36
  Recognition discrimination18.7 (4.1)24
Attention-executive-psychomotor
 Trail Making Test A, time in seconds (Trails A)29.6 (8.9)5-minute limit
 Trail Making Test B, time in seconds (Trails B)74.8 (28.9)5-minute limit
 Controlled Oral Word Association Test (COWAT)36.4 (9.8)3-minute limit
 Grooved Pegboard, Dominant Hand, time in seconds (Pegs-D)76.6 (14.8)No limit
 WAIS-III Digit Span Subtest (Digit Span)16.9 (4.2)30