Table 1.
Demographic data of the two groups: mean (standard deviation).
| Group | Men/women | Age | Education | SESa | ANART IQb | Handednessc |
|---|---|---|---|---|---|---|
| Younger | 11/10 | 24 (19–30) | 16 (1.2) | 26 (10.3) | 113 (7.9) | 19 (3.9) |
| Older | 9/7 | 72 (60–85) | 17 (2.4) | 20 (10.1) | 122 (6.1) | 18 (4.0) |
| p | ns | .0001 | ns | .06 | .005 | ns |
a
Lower scores are in the direction of higher socioeconomic status (SES).
b
American National Adult Reading Test Intelligence Quotient.
c
Handedness questionnaire scores 14–32 index right-handedness, scores 50–70 left-handedness, and scores 33–49 ambidexterity (Crovitz and Zener, 1962).