Patient “autonomy” or self-determination is at the core of all medical decision-making in the United States. It means that patients have the right and ability to make their own choices and decisions about medical care and treatment they receive, as long as those decisions are within the boundaries of law. There is a legal presumption that they are fit and competent to make those decisions until a court determines otherwise.

In psychology, self-determination is an important concept that refers to each person's ability to make choices and manage their own life. This ability plays an important role in psychological health and well-being. Self-determination allows people to feel that they have control over their choices and lives.