Intrinsic Motivation: Intrinsic motivation refers to engaging in an activity for its own sake or because it is personally rewarding. For example, studying psychology out of genuine interest and curiosity.
Extrinsic Motivation: Extrinsic motivation involves engaging in an activity to earn rewards or avoid punishments. An example would be studying psychology to pass an exam and receive a good grade.
Self-Determination Theory: This theory emphasizes three basic psychological needs - autonomy, competence, and relatedness - which are essential for intrinsic motivation and personal growth.