The Cognitive Evaluation Theory suggests there are two motivation systems - intrinsic and extrinsic. Intrinsic motivators come from performing a task itself and include achievement, responsibility, and competence, while extrinsic motivators are external rewards like pay, promotion, and working conditions. The theory explains that when organizations use extrinsic rewards to motivate superior performance, it can reduce intrinsic motivation. Specifically, allocating extrinsic rewards for behavior previously motivated intrinsically tends to decrease overall motivation levels over time.