Table 1.
Sociodemographic Description of the Study Groups
| Group (N) | Mean Age (SD)a | Mean Years Education (SD)b | Male:Femalec | Caucasian:African American:Otherd |
| Community Normal (36) | 36.67 (13.56) | 14.86 (2.12) | 18:18 | 26:7:3 |
| Schizophrenia Patients (23) | 32.26 (11.25) | 12.00 (2.47) | 16:7 | 14:6:3 |
| Family Spectrum (17) | 45.59 (10.96) | 14.71 (3.69) | 9:8 | 13:3:1 |
| Family Normal (23) | 50.26 (11.53) | 13.82 (2.87) | 7:16 | 17:5:1 |
| Community Spectrum (14) | 38.29 (9.81) | 14.86 (2.07) | 9:5 | 9:2:3 |
ANOVA revealed a significant difference in the ages of the groups (F = 8.405, p < .001). There was no group × age interaction on task performance (F = 2.02, p = .097), and age was not significant as a covariate (F = 0.513, p = .476).
ANOVA revealed a significant difference in years of education (F = 4.956, p = .001). There was no group × years of education interaction on task performance (F = 0.829, p = .510), and years of education was not significant as a covariate (F = 1.685, p = .197).
Chi-square test revealed no significant differences in the proportion of males and females across groups (χ2 = 8.04, p = .09).
Chi-square test revealed no significant differences in the proportion of Caucasian, African American, or “other” participants (χ2 = 4.482, p = .811).