Table 2.

Short description of neuropsychological test battery and examined cognitive domains.

DomainTestShort Description of Test
Simple attentionDigit Span, Forward*Repeating random number sequences forward.
Complex attention/executive functionTrail Making Test, Part BDrawing lines to connect circles, alternating between numbered and lettered circles consecutively as quickly as possible.
Digit Span, Backward*Repeating random number sequences backward.
Wisconsin Card Sorting Test, Keio version (KWCST)Placing cards one by one under 4 stimulus cards, according to a principle that the subject must deduce from the pattern of the examiner’s responses to the subject’s placement of the card. Two sessions, each of which is composed of 48 trials.
MemoryRey Auditory-Verbal
Learning Test
Immediate recall trials after each of 5 repeated oral presentations of a 15-word list. Delayed recall trial after 20 min, followed by recognition of the 15 items among 15 distractor words.
Visual-spatial processingBlock Design*Using 4 or 9 blocks (each block has 2 red, 2 white, and 2 red-white sides) to construct replicas of designs printed in a smaller scale.
LanguageAnimal Naming TestNaming as many different animals as possible in 1 min.
Reasoning/problem solvingSimilarities*Describing how similar 2 words that represent common objects or concepts are.
Psychomotor speedTrail Making Test, Part ADrawing lines to connect consecutively numbered circles as quickly as possible.
Digit Symbol Substitution*Filling in blanks with symbols that are paired to numbers as quickly as possible for 90 s.
  • * Subsets of the Wechsler Adult Intelligence Scale-Revised.