“…Beck & Jackson, 2020), which further complicates connecting them with population–level variance in individual differences constructs (cf. Beltz, Wright, Sprague, & Molenaar, 2016; Dotterer, Beltz, Foster, Simms, & Wright, in press; Lazarus, Sened, & Rafaeli, 2020; Woods et al, 2020; Wright & Zimmermann, 2019). The more idiosyncratic the associations are, the less practical and even plausible it is to identify the specific causes of individual differences, at least as long as these are defined as dimensions along which individuals vary.…”