Self-determination is about causal action. Self-determined people act in service to freely chosen goals. Self-determined actions function to enable a person to be the causal agent in his or her life.
Self-determined action is characterized by three essential characteristics – volitional action, causal action, and action-control beliefs.
This website introduces a new measure of self-determination for youth and young adults both with and without identified disabilities called the Self-Determination Inventory System.