Lee, Eun-Ju, and Jeong-woo Jang. "Profiling good Samaritans in online knowledge forums: Effects of affiliative tendency, self-esteem, and public individuation on knowledge sharing." Computers in Human Behavior 26.6 (2010): 1336-1344.

Two studies explored the motivations behind knowledge sharing in online forums, guided by the uses and gratifications model. Study 1 found that users with a strong need for social interaction, self-esteem, or public individuation were more likely to contribute to knowledge repositories. Study 2 showed that these motivations were further enhanced when social presence and recognition rewards were made salient, highlighting that psychological traits drive knowledge sharing more effectively in contexts where users' contributions are acknowledged and other users are visibly present.