Background A long-term illness is stressful both for the person with the diagnosis and for his or her informal caregivers. Many people willingly assume the caregiving role, so it is important to understand why they stay in this role and how their motivation affects their health. Self-determination theory (SDT) is a theory of human motivation that has been successfully applied in human research domains. To our knowledge, there is no literature review on the application of SDT in a caregiver context.
