TABLE 2.

Neuropsychological Evaluation

Domain and Task	Younger (n = 20) Means (SD)	Older (n = 20) Means (SD)
1. Attention
Matrices total score	59.3 (0.92)	58.5 (1.35)	U = 130.0 z = −2.0 p = 0.060
2. Language
Verbal fluency (phonological cluster)	49.20 (6.45)	42.65 (10.45)	U = 111 z = −2.4 p = 0.015
Verbal fluency (categories)	46.40 (4.12)	42.00 (6.03)	U = 114.5 z = −2.3 p = 0.020
3. Verbal and visual memory
Story Immediate/Delayed Recall*	15.95 (0.67)	14.73 (1.46)	U = 76.00 z = −3.6 p = 0.001
Rey’s Figure Delayed Recall*	30.35 (1.98)	27.57 (2.56)	U = 89.5 z = −3.01 p = 0.001
4. Visuospatial
Rey’s Figure Copy	36.00 (0.00)	35.85 (0.48)	U = 180.00 z = −1.432 p = 0.602
Raven Colored Matrices*	35.85 (0.36)	34.05 (1.93)	U = 65.0 z = −4.02 p = 0.001
5. Executive functions/psychomotor speed
Trials A	39.45 (12.67)	40.65 (13.50)	U = 191.00 z = −0.244 p = 0.820
Trials B	70.65 (15.97)	83.40 (34.35)	U = 166.00 z = −0.921 p = 0.369

^*indicates statistically significant.