This paper explores the nexus between epistemic culture and academic conceptions of the generic skill of critical thinking. Although generic skills are seen as being of great importance in higher education, there has been little examination into the ways in which the knowledge culture of each specific discipline influences the academic staff's conception of generic skills. This paper investigates the ways in which critical thinking is understood by academic staff in two related but distinct disciplines, history and economics. It finds that while there are some similarities, critical thinking in economics is defined primarily as the use of economic tools whereas critical thinking in history is described from a range of perspectives. Thus the epistemic culture of the discipline appears to influence conceptions of critical thinking. This has implications for the ways in which generic skills are framed within the broader university community and indeed has implications for policy at both the university and the political level.