The theory suggests the three fundamental needs for humans: autonomy, relatedness, and competence. When a person meets these three needs, they have higher reported wellbeing. 

Claremont Graduate University

The social psychology discipline has intensively studied how situations impact human states including the study of attitude and behavioral consistency, which are the common variables that UX researchers study. Overall, understanding and applying social psychology theories would help UX researchers and designers create products for specific situations and human states. 

Social Psychology and UX Research 


https://www.nngroup.com/videos/self-determination-theory-autonomy-relatedness-competency/

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