What is Self-determination Theory?

Self-determination theory (SDT) is a psychological theory that emphasizes the importance of human autonomy, competence, and relatedness in the development and maintenance of well-being. SDT was developed by Edward Deci and Richard Ryan in the 1980s and has since become one of the most widely studied theories in psychology.

At its core, SDT suggests that people have three basic psychological needs that must be met in order to develop and maintain optimal psychological functioning. These needs are:

1. Autonomy: the need to feel in control of one’s own behavior and choices, and to feel that one’s actions are in alignment with one’s values and interests.

2. Competence: the need to feel effective and capable in one’s actions and pursuits, and to feel a sense of mastery over one’s environment.

3. Relatedness: the need to feel connected to others and to experience a sense of belonging and meaningful social interaction.

When these three needs are met, people are more likely to experience positive emotions, greater life satisfaction, and a greater sense of well-being. Conversely, when these needs are not met, people are more likely to experience negative emotions, lower life satisfaction, and greater psychological distress.

According to SDT, people have an innate tendency toward growth and development, and this tendency is facilitated when the three basic psychological needs are met. However, external factors can also play a role in supporting or hindering this growth. For example, when individuals are given opportunities to engage in activities that are aligned with their values and interests, and that provide them with a sense of challenge and mastery, they are more likely to experience a sense of autonomy and competence. Additionally, when individuals are able to form close, meaningful relationships with others, they are more likely to experience a sense of relatedness.

One of the key features of SDT is its distinction between intrinsic and extrinsic motivation. Intrinsic motivation refers to the drive to engage in an activity for its own sake, because it is interesting, enjoyable, or fulfilling in some way. Extrinsic motivation, on the other hand, refers to the drive to engage in an activity because of external rewards or pressures, such as money, recognition, or social approval.

SDT suggests that intrinsic motivation is more closely aligned with the three basic psychological needs and is therefore more likely to lead to well-being. In contrast, extrinsic motivation may undermine autonomy, competence, and relatedness, and may lead to decreased well-being. However, not all extrinsic motivation is necessarily harmful. When extrinsic rewards are used in a way that supports individuals’ autonomy, competence, and relatedness, they may actually enhance intrinsic motivation and well-being.

SDT has important implications for a wide range of fields, including education, healthcare, business, and sports. In education, SDT suggests that students are more likely to be engaged and motivated when they are given opportunities to pursue their interests, when they feel competent in their abilities, and when they have positive relationships with teachers and peers. In healthcare, SDT suggests that patients are more likely to adhere to treatment plans and experience better health outcomes when they feel a sense of autonomy and competence in managing their health, and when they have supportive relationships with healthcare providers. In business, SDT suggests that employees are more likely to be productive and satisfied when they are given opportunities to use their skills and knowledge, when they feel a sense of control over their work, and when they have positive relationships with colleagues and supervisors. In sports, SDT suggests that athletes are more likely to be motivated and perform well when they are given opportunities to develop their skills, when they feel a sense of control over their training and competition, and when they have positive relationships with coaches and teammates.


In conclusion, self-determination theory provides a valuable perspective on the factors that promote optimal psychological functioning and well-being. The theory emphasizes the importance of meeting three basic psychological needs – autonomy, competence, and relatedness – in order to support individuals’ innate drive toward growth and development.

SDT has important implications for a wide range of fields, including education, healthcare, business, and sports, and has been used to inform interventions and programs aimed at promoting well-being and enhancing motivation and engagement.

By recognizing the importance of intrinsic motivation and the role of external factors in supporting or undermining autonomy, competence, and relatedness, SDT offers a nuanced and holistic understanding of human motivation and behavior. As such, it has become one of the most widely studied and influential theories in psychology, and continues to inform research and practice across a variety of domains.

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