“…- Based on previous factor analytic work suggesting that variants of the P3 and ERN load onto separate ERP factors indicative of distinct processes (Burwell et al, 2016; Ribes-Guardiola et al, 2020), we hypothesized that each ERP factor would show unique predictive relations with broad externalizing factor.
- Considering that P3 and ERN seem to operate as neurophysiological indicators of general susceptibility to externalizing psychopathology (Lutz et al, 2021; Pasion & Barbosa, 2019; Patrick et al, 2006; Yancey et al, 2013), we predicted that specific problem dimensions loading onto the broad externalizing factor would not relate significantly to either ERP factor after accounting for the broad externalizing factor.
- Given that internalizing problems correlate positively with externalizing proneness (Caspi et al, 2014; Caspi & Moffitt, 2018), we also performed some additional analyses for testing associations between the two ERP factors with internalizing psychopathology. Given the diversity of methods and findings for these ERPs across the internalizing spectrum (Macedo et al, 2021; Pasion & Barbosa, 2019; Saunders & Inzlicht, 2020), we did not have specific hypotheses for this domain, and our analyses were exploratory in this regard.
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