Table 1.
Characteristics and Performance on Neuropsychological Measures
| Control (N=56) |
SPD (N=34) |
SZ (N=42) |
Relatives (N=35) |
N | Sig <.05 | |
|---|---|---|---|---|---|---|
| Age | 38.75 (10.4) | 37.35 (9.2) | 36.86 (12.8) | 36.03 (12.5) | 167 | n.s. |
| Gender (M : F) | 26:30 | 20:14 | 23:19 | 13:22 | 167 | n.s. |
| Education Level | ||||||
| Participant | 4.07 (0.81) | 3.85 (1.02) | 3.10 (0.88) | 2.89 (1.01) | 167 | C, SPD > SZ, Rel |
| Mother | 3.62 (1.18) | 3.73 (1.31) | 3.13 (0.94) | 3.12 (1.13) | 160 | C, SPD > SZ, Rel |
| Father | 3.63 (1.41) | 3.59 (1.46) | 3.21 (1.48) | 2.89 (1.01) | 144 | n.s. |
| Schizotypal Personality Questionnaire | ||||||
| Cognitive Perceptual | 4.55 | 16.59 | 18.89 | 11.71 | 161 | C<Rel<SZ, SPD |
| Interpersonal | 6.44 | 15.12 | 19.68 | 14.53 | 161 | C<Rel, SPD<SZ |
| Disorganized | 2.78 | 8.44 | 8.34 | 5.56 | 152 | C<Rel<SZ, SPD |
| Wechsler Adult Intelligence Scale | ||||||
| Picture Completion | 10.78 | 10.42 | 7.31 | 8.35 | 158 | C, SPD > SZ, Rel |
| Digit Symbol | 11.16 | 9.47 | 6.93 | 8.03 | 162 | C > SPD > SZ, Rel |
| Similarities | 9.96 | 10.48 | 8.21 | 8.25 | 159 | C, SPD > SZ, Rel |
| Digit Span | 9.95 | 10.61 | 8.26 | 9.00 | 158 | C, SPD > SZ; SPD > Rel |
Note. C=control, SPD=schizotypal personality disorder; SZ=schizophrenia; Rel=relatives. Education level included self-report data on completion of grade school (1), junior high school (2), high school (3), some college (4), bachelor’s degree (5), master’s degree (6), and doctoral degree (7).