Table 5.
Neuropsychological results by group.
| Measure | Control | Myotonic Dystrophy | Significance (p) |
|---|---|---|---|
| Mean (SD) | Mean (SD) | ||
| Wechsler Verbal Comprehension | 114 (13) | 87 (19) | .0001 |
| Wechsler Perceptual Organization | 115 (16) | 78 (16) | <.0001 |
| Wechsler Working Memory | 110 (11) | 79 (17) | <.0001 |
| Wechsler Processing Speed | 99 (13) | 75 (14) | <.0001 |
| Full-Scale IQ | 114 (14) | 76 (19) | <.0001 |
| California Verbal Learning Test (total) | 58 (9) | 44 (16) | .008 |
| Wisconsin Card Sorting Test (total errors) | 108 (16) | 91 (16) | .009 |
| BRIEF General Executive Composite | 45 (8) | 63 (10) | <.0001 |
Note: SD = Standard Deviation. All tests were administered to all subjects; Higher BRIEF scores indicate greater executive dysfunction; Lower Wisconsin Card Sorting Test error scores indicates greater executive dysfunction.