Incremental and interactive relations of triarchic psychopathy measure scales with antisocial and prosocial correlates: A preregistered replication of Gatner et al. (2016).

Meanness (i.e., callousness/unemotionality, antagonism) and disinhibition (e.g., impulsivity, antisocial behavior) are the consensus traits that undergird psychopathy. Significant debate exists regarding a proposed third dimension of boldness or fearless dominance, characterized by particularly high levels of both extraversion and emotional stability. The present study is a preregistered direct replication of the work of Gatner and colleagues (2016) regarding the importance of boldness in psychopathy. Specifically, in a large undergraduate sample (n = 1,015), which more than doubled the original study sample size, we examined whether boldness exhibited curvilinear relations to antisocial and prosocial outcomes, provided incremental predictive utility, and interacted with meanness and disinhibition. Consistent with Gatner and colleagues' findings, incremental, interactive, or curvilinear effects of boldness did not account for more than a small amount of variance in outcomes beyond the main effects of meanness and disinhibition. We discuss both process and results in the context of promoting a culture of reproducibility as well as transparent and open practices in clinical science. (PsycInfo Database Record (c) 2023 APA, all rights reserved).