Relates to Self Determination Theory. Deals with intrinsic motivation and types of extrinsic motivation in which people integrate (internelized) a value of an activity into their sense of self.
Deci, E. L., & Ryan, R. M. (2000). The “what” and “why” of goal pursuits: Human needs and the self-determination of behaviour. Psychological Inquiry, 11(4), 227-268.