Table 2.
Behavioral Results
| Reaction Times (Milliseconds) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Self-Reflection |
Other-Reflection |
Affect Labeling |
Perceptual |
|||||||||
| Mean | SD | p Value | Mean | SD | p Value | Mean | SD | p Value | Mean | SD | p Value | |
| Controls | 1472 | 239 | 0.39 | 1522 | 251 | 0.97 | 1411 | 217 | 0.09 | 916 | 151 | 0.05 |
| Patients | 1538 | 206 | 1525 | 204 | 1532 | 197 | 1066 | 261 | ||||
|
| ||||||||||||
| Response Types (%) | ||||||||||||
| Self-Reflection |
Other-Reflection (% Like Other) |
Affect Labeling (% Positive) |
Perceptual (% Correct) |
|||||||||
| Mean | SD | p Value | Mean | SD | p Value | Mean | SD | p Value | Mean | SD | p Value | |
|
| ||||||||||||
| Controls | 49.0 | 6 | 0.91 | 48.9 | 5 | 0.66 | 49.3 | 5 | 0.59 | 98.0 | 4 | 0.13 |
| Patients | 49.3 | 8 | 47.8 | 8 | 48.1 | 7 | 94.0 | 10 | ||||
Mean reaction times, mean percentage response types, and p values for the independent Student's t tests comparing the means of the two groups, for the four experimental tasks. The total percentage of trials in which subjects made responses (across all four tasks) was high in each group (Mean ± SD): 98% ± 3% in the controls and 97% ± 2% in the schizophrenia patients. Also, during the self-reflection task, both groups showed a comparably large bias to rate the positively valenced adjectives as “self” and the negatively valenced adjectives as “not self” (percentage of words rated as “self” that were positively valenced: controls: mean ± SD = 86.9 ± 9 %; patients: mean ± SD = 85.1 ± 9%; t = .57, df = 34, p = .57).