Final answer:
Self-determination theory suggests that the psychological needs of autonomy, competence, and relatedness need to be fulfilled for an individual to experience life satisfaction.
Step-by-step explanation:
Self-Determination Theory and Life Satisfaction
According to self-determination theory, the psychological needs that should be fulfilled for an individual to have life satisfaction are autonomy, competence, and relatedness. Autonomy refers to the feeling of being in control of one's own life and decisions. Competence is the sense of being able to effectively interact with the environment and achieve goals, reflecting confidence in one's abilities. Lastly, relatedness is the need to have meaningful relationships and connections with others, which encompasses feelings of belonging and being cared for. These needs must be satisfied for an individual to thrive and feel content with their life.