Table 4.
Regression of Neurocognitive, Emotion Perception, and ToM Test Performance on Communication Disturbances in Speech
| Steps | R | R-Square | R-Square Change | F-Change | Significance of F Change |
| (a) 63 patients with schizophrenia or schizoaffective disorder | |||||
| 1. Neurocognitive tests | .638 | .407 | .407 | 7.545 | .000 |
| 2. Emotion perception tests | .728 | .530 | .123 | 4.437 | .007 |
| 3. ToM tests | .768 | .590 | .060 | 3.684 | .032 |
| (b) 33 patients with schizophrenia | |||||
| 1. Neurocognitive tests | .709 | .503 | .503 | 5.268 | .002 |
| 2. Emotion perception tests | .794 | .631 | .127 | 2.645 | .073 |
| 3. ToM tests | .874 | .764 | .133 | 5.913 | .009 |
| (c) 21 nonpsychiatric controls | |||||
| 1. Neurocognitive tests | .747 | .559 | .559 | 5.061 | .008 |
| 2. Emotion perception tests | .753 | .567 | .008 | 0.130 | .879 |
| 3. ToM tests | .753 | .567 | .000 | 0.001 | .980 |
Note: ToM, theory of mind; CPT, Continuous Performance Test. Step 1: Shipley Vocabulary, Shipley Abstraction, CPT—Identical Pairs, Trails B, and Digit Span. Step 2: Eckman Faces, Bell-Lysaker Emotion Recognition Test, and Profile of Nonverbal Sensitivity (half). Step 3: Sarfati Test and Hinting Test.