Abstract
This paper reviews the literature in a number of areas that converge upon the theme of the role of knowledge within professional identity. Within knowledge transfer literature the individual perspective is underdeveloped, and this paper seeks to contribute by exploring the function of knowledge within an individual's professional identity, thus unfolding a theoretical connection between the literatures of knowledge and identity. Its central argument concurs with Szulanski's notion of ‘internal stickiness’ as a barrier to knowledge transfer but extends this hypothesis into the psychological ownership of knowledge and to the idea of ‘possessiveness’. The paper argues that the value of self-categorized knowledge places the latter within the individual's cognitive structure of their identity. It offers up the idea of valued knowledge to the knowledge transfer domain and suggests that feelings of possessiveness towards knowledge may intervene in the willingness of an individual to disclose knowledge in a knowledge transfer process.