Table 1.
Neuropsychological Test Measures
| Test Measure | Test Description |
|---|---|
| Attention | |
| ARCPT Inconsistency | Computerized measure of vigilance and sustained attention. Participants respond through a single keystroke when a specific combination of letters appears on the screen. Indices examined included inconsistency, final ISI (i.e., the minimum interval between stimulus items ISI at which participants can maintain 80% accuracy), and sensitivity a’ (i.e., accuracy in detecting hit targets). |
| ARCPT Final ISI | |
| ARCPT Sensitivity a’ | |
| Processing Speed | |
| TMT Part A | Assessment of visual search speed requiring examinee to draw a continuous line through 25 consecutive numbered circles; performance is measured by overall completion time. |
| Stroop Word Reading | Measures selective attention, cognitive speed, and response inhibition. |
| Stroop Color Naming | The test includes two baseline trials lasting 45 seconds each. Trial I (Word Reading) consists of 100 randomly arranged words (RED, GREEN, and BLUE) that the participant must quickly read aloud. In Trial II (Color Naming), the participant quickly names color patches. |
| Memory | |
| CVLT-II Total Recall | Requires learning and recall of a 16-item word list. After the initial learning phase, participants are asked to recall the list after a 20-minute delay. Indices examined included total recall (trials 1–5) and long delay free recall. |
| CVLT-II Long Delay | |
| Executive Functioning | |
| Stroop Color-Word | Contains colored words in which the word and the color do not match. This test provides a measure of ‘cognitive inhibition in terms of the ability to inhibit a pre-potent response (reading the word) in favor of naming the ink color. |
| TMT Part B | Requires that the examinee draw a continuous line through consecutive numbers and letters, alternating the order each time a connection is made (i.e., 1-A-2-B-3-C, etc.). Unlike Part A, this task introduces the added cognitive demand of mental set-shifting. |
| Verbal Fluency | |
| Letter Fluency (COWAT) | Speeded word-retrieval based on letter cues. Performance based on total number of correct responses. |
| Animal Fluency | Rapid word generation for a semantic category. Performance based on total number of correct responses. |
| Overall Cognition | Composite score generated using aggregate data from the above individual domains. |