Table 1:
Participant Demographic, Clinical Measures, and Cognitive Task Performance
| Comparison Control (N=44) | Schizophrenia (N=30) | Statistical Test | ||||
|---|---|---|---|---|---|---|
|
| ||||||
| Mean | SD | Mean | SD | Test Statistic | p-value | |
|
| ||||||
| Age | 36.2 | 11.2 | 38.3 | 12.6 | t = −0.7 | 0.5 |
| Gender (% Female) | 32% | 30% | χ2 = 0.03 | 0.9 | ||
| Racial Identity | χ2 = 2.2 | 0.3 | ||||
| % Black | 50% | 57% | ||||
| % Asian | 13.60% | 3% | ||||
| % White | 36.40% | 40% | ||||
| Education | ||||||
| Parental | 14.4 | 2.8 | 14.3 | 3.7 | t = 0.2 | 0.9 |
| Participant | 15.6 | 2.3 | 12.8 | 2.9 | t = 4.7 | < 0.001 |
| Cognitive | ||||||
| WTAR SS | 96.9 | 19.9 | 92.7 | 19.9 | t = 0.89 | 0.4 |
| N-back Performance | ||||||
| 1-back d-prime | 2.9 | 1.3 | 2.0 | 1.3 | t = 2.8 | 0.007 |
| 2-back d-prime | 1.6 | 1.0 | 1.1 | 0.8 | t = 2.4 | 0.02 |
| 3-back d-prime | 1.2 | 0.8 | 0.7 | 0.9 | t = 2.6 | 0.01 |
| 4-back d-prime | 1.0 | 0.6 | 0.5 | 0.8 | t = 3.1 | 0.002 |
| Average d-prime | 1.7 | 0.8 | 1.1 | 0.8 | t = 3.1 | 0.003 |
| Clinical Characterization | ||||||
| MAP-SR | 41.7 | 9.6 | 36.7 | 9.4 | t = 2.2 | 0.03 |
| CAINS Total | 22.2 | 7.4 | ||||
| BPRS Total | 38.1 | 8.0 | ||||
| BPRS Reality Distortion Subscale | 7.8 | 4.2 | ||||
| BDI-II Total | 13.7 | 9.1 | ||||
Note: SD = Standard Deviation; WTAR SS = Weschler Test of Adult Reading Standard Score; MAP-SR = Motivation and Pleasure – Self-Report; BPRS = Brief Psychiatric Rating Scale Total Score; BDI-II = Beck Depression Inventory, Second Edition; CAINS = Clinical Assessment Interview for Negative Symptoms