|| The objectives of this research are listed as follows: 1. To systematically review literature on behavioral economics, user experiences and interface design, and examine diverse issues concerning social interaction by ways of cross-disciplinary studies; 2. To understand young people’s interactive modes, behavior types and hidden decision-making mechanisms which trigger their behavior in social media; 3. To verify the applicability of the interactive modes and design strategies by ways of the mixed methods approach and cross-cultural verification; and 4. To understand how different interface designs direct users and offer, by induction, the corresponding strategies so as to utilize designs to induce desired interactive behaviors in social media. It is hoped that users and designers will demonstrate greater social responsibility and positive context in their creativity.