Abstract
A general theory of conflict and violence provides a framework for understanding the relationship between internal and external political conflict and the conditions under which they are connected. This study draws on a cross-cultural sample of 90 preindustrial societies, assessing whether these two forms of conflict covary and identifies the social factors that shape their associations. Using a multiple regression analysis reveals a moderate positive relationship overall, but the strength and nature of these relationships depend on specific societal characteristics. Societies in which internal and external conflict can occur and fall together display remarkedly different patterns of cross-cutting ties compared to those in which the two forms operate independently. Structural features of social organization emerge as key determinants of whether aggression is directed inward, outward, or both. In contrast, dispositional (psychocultural) traits are strong predictors of overall conflict levels but do not distinguish between internal and external targets. Together, these findings showcases the importance of integrating structural and dispositional factors in explaining patterns of political violence.