Answer:
The answer is extrinsic and intrinsic, respectively.
Explanation:
Extrinsic motivation comes from an external factor, such as money, a promotion or a good grade. On the other hand, intrinsic motivation reflects an attitude of enjoyment or self-improvement.
Some studies have shown that both types of motivation can be effective. However, too much extrinsic motivation can decrease already intrinsic motivation. In other words, offering a reward could give people the impression that a task is dull.