Chunk #36 — Results — Effects of Externalizing Proneness on Brain Responses to Performance Feedback — Externalizing proneness and performance monitoring: Dissociating effects for feedback-ERN versus response-ERN
To directly compare activity associated with the loss-feedback FRN and incorrect-response ERN in this participant sample, a repeated-measures GLM analysis was conducted in which TF-theta component scores for loss trials (measured in the current study) were included along with TD ERN peak scores (measured in the Hall et al. study) as a within-subjects (FRN/ERN) factor, and continuous scores on the ESI-100 were included as a between-subjects factor. The FRN/ERN × Externalizing interaction was significant, F(1,87) = 9.91, p < .002, qualifying lower-order main effects. Follow-up simple effects GLMs separately for the FRN and ERN indicated that this interaction was attributable to a significant relationship of ERN amplitude with Externalizing scores, F(1,87) = 9.88, p < .002, compared with a null relationship for the FRN, F(1,87) < 1. (A comparably robust FRN/ERN × Externalizing interaction was evident when data for subgroups of individuals low and high in externalizing proneness were employed in the analysis in place of continuous scores for all participants, F[1,60] = 9.32, p < .003.) To further ensure comparability of measures across the two experiments, we repeated the
