Individuals with psychopathic traits commit disproportionate amounts of crime (Hare, 1996), costing billions annually (Kiehl & Hoffman, 2011), while often creating general havoc in their social orbit (Smith & Lilienfeld, 2013). Given its ripple effects, the decades-long explosion of psychopathy research is unsurprising. For reasons we discuss, though, it is similarly unsurprising that certain foundational questions remain unresolved. Why do psychopathic traits vary and how do they develop over the life-course? Are the traits stable or malleable, and in either case what are the driving factors? Infusing it all are practical considerations about data and the requirements for producing answers. Relative to psychopathy, the study of normative personality has produced a deep reservoir of insight on these core issues, both empirical and theoretical (Briley & Tucker-Drob, 2017). We argue that by importing parts of their knowledge along with certain research designs, psychopathy research can take a rapid leap forward.