Cognitive Evaluation Theory
This theory suggests that there are actually two motivation systems: intrinsic and extrinsic that correspond to two kinds of motivators:
intrinsic motivators: Achievement, responsibility and competence. motivators that come from the actual performance of the task or job -- the intrinsic interest of the work.
extrinsic: pay, promotion, feedback, working conditions -- things that come from a person's environment, controlled by others.