Self-Determination Theory is a framework for studying human motivation and personality with a focus on extrinsic motivation from external rewards and opinions versus intrinsic motivation from internal interests and values. The theory posits that social and cultural factors can either support or undermine people's sense of autonomy, competence, and relatedness, which enhances performance, persistence, and creativity when satisfied, but leads to ill-being and poor functioning when thwarted. The document discusses applying self-determination theory to learning and provides examples of fostering autonomy, competence, and relatedness in educational contexts.