“…Each factor must be valid at least in the sense of criterion validity. Notably, the general factor and specific factors of psychopathology defined in bifactor models have each already been found account for unique variance in adverse functional outcomes, including psychoactive drug prescriptions, incarceration, poor academic progress, suicidal behavior, and self-harm (Haltigan et al, 2018;Lahey et al, 2015;Pettersson, Lahey, Lundström, Larsson, & Lichtenstein, 2018;Sallis et al, 2019), and in theoretically related constructs, including trait negative emotionality (Caspi et al, 2014;Class et al, 2019) and executive functions (Bloemen et al, 2018;Martel et al, 2017;Shields, Reardon, Brandes, & Tackett, 2019). In the present analyses, we assess the criterion validity of each factor defined in bifactor and second-order models using a diverse set of theoretically and practically relevant external variables that are measured independently (i.e., without shared method variance with psychopathology).…”