Table 1.
Descriptive Statistics of Demographic, Cognitive, and Clinical Variables.
Fig 1.
Depiction of the reward task design.
Fig 2.
a. Grand average voltage topography maps for the better than expected outcome difference waveform (unexpected reward minus expected nonreward conditions) from the entire sample (N = 44). b. Grand average voltage topography maps for the worse than expected outcome difference waveform (unexpected nonreward minus expected reward conditions) from the entire sample (N = 44).
Fig 3.
Grand average waveforms for the feedback-related positivity (FRP), feedback-related negativity (FRN), and late positive potential (LPP) components from the entire sample (N = 44).
Better than expected outcome = difference waveform of unexpected reward minus expected nonreward; worse than expected outcome = difference waveform of unexpected nonreward minus expected reward. A low-pass filter of 20 Hz was used for the figure.
Fig 4.
Scatterplot of the relationship of the negative symptom factor score from the positive and negative syndrome scale with the late positive potential mean voltage to better than expected outcomes across entire sample (N = 44).
Better than expected outcome = difference waveform of unexpected reward minus expected nonreward.
Fig 5.
Scatterplot of the relationship of the disorganized factor score from the schizotypal personality questionnaire brief-revised with the feedback-related negativity mean amplitude to worse than expected outcomes across entire sample (N = 44).
Worse than expected outcome = difference waveform of unexpected nonreward minus expected reward. One participant was missing data from this scale.
Table 2.
Peak Latencies and Mean Amplitudes of the Event-Related Potentials.