The sociobiology of sociopathy: An integrated evolutionary model

TLDR

Sociopathy is a socially prominent and psychologically intriguing condition, with proximate explanations rooted in genetics, development, and personality, and ultimate explanations framing it as a frequency‑dependent evolutionary strategy shaped by environmental conditions. This study aims to integrate proximate developmental models with ultimate evolutionary theories, proposing that sociopathy arises from two distinct developmental etiologies driven by separate evolutionary mechanisms. The authors develop an integrated framework that links developmental risk factors to evolutionary mechanisms, delineating two pathways that produce sociopathic behavior. The authors conclude that effective social interventions must address both etiological pathways and their contributing factors to reduce sociopathic behavior.

Abstract

Abstract Sociopaths are “outstanding” members of society in two senses: politically, they draw our attention because of the inordinate amount of crime they commit, and psychologically, they hold our fascination because most ofus cannot fathom the cold, detached way they repeatedly harm and manipulate others. Proximate explanations from behavior genetics, child development, personality theory, learning theory, and social psychology describe a complex interaction of genetic and physiological risk factors with demographic and micro environmental variables that predispose a portion of the population to chronic antisocial behavior. More recent, evolutionary and game theoretic models have tried to present an ultimate explanation of sociopathy as the expression of a frequency-dependent life strategy which is selected, in dynamic equilibrium, in response to certain varying environmental circumstances. This paper tries to integrate the proximate, developmental models with the ultimate, evolutionary ones, suggesting that two developmentally different etiologies of sociopathy emerge from two different evolutionary mechanisms. Social strategies for minimizing the incidence of sociopathic behavior in modern society should consider the two different etiologies and the factors that contribute to them.