Table 2.
Proportion of trials correct on spatial working memory task.
| CTRL (n = 37) | PSZ (n = 23) | REL (n = 30) | F-value | p-value | |
|---|---|---|---|---|---|
| Overall | .78a (.08) | .71a,b (.12) | .79b (.09) | F(2, 87) = 7.1 | p = .001 |
| Two-Stimulus Trials | .81 (.09) | .75b (.13) | .83b (.10) | F(2, 87) = 3.8 | p = .03 |
| Three-Stimulus Trials | .78a (.08) | .69a,b (.12) | .78b (.09) | F(2, 87) = 7.7 | p < .001 |
| No Distractor Trials | .73 (.09) | .68b (.09) | .74b (.09) | F(2, 87) = 3.2 | p = .047 |
| Distractor Trials | .84a (.09) | .73a,b (.15) | .85b (.12) | F(2, 87) = 8.2 | p < .001 |
| Probe at Previous Target | .84 (.15) | .76b (.17) | .86b (.12) | F(2, 87) = 3.5 | p = .03 |
| Probe at Previous Distractor | .89a (.10) | .72a,b (.17) | .86b (.18) | F(2, 87) = 9.6 | p < .001 |
| Probe Elsewhere | .64 (.17) | .62 (.15) | .65 (.16) | F(2, 87) = 0.3 | p = .75 |
| Probe at 1st Position | .78 (.20) | .72 (.20) | .82 (.09) | F(2, 87) = 2.3 | p = .11 |
| Probe at 2nd Position | .86a (.12) | .74a,b (.15) | .86b (.14) | F(2, 87) = 5.8 | p = .004 |
| Probe at 3rd Position | .90a (.08) | .75a,b (.16) | .88b (.13) | F(2, 87) = 10.4 | p < .001 |
Parentheses indicate standard deviations unless noted otherwise. p-values indicate differences across diagnostic categories: schizophrenia probands (PSZ), controls (CTRL) and relatives of PSZ (REL). Proportions that share the same superscript for a given index (e.g., row) differ between groups, p < .05.