Prof. Chirag Shah had the following journal article published with Erik Choi, who graduated from our PhD program in 2014. Choi, E., & Shah, C. (2016). “User Motivations for Asking Questions in Online Q&A Services.” Journal of the Association for Information Science and Technology (JASIST), 67(5), 1182-1197. They found that cognitive needs were the most significant motivation driving people to ask a question, and that other motivational factors (e.g., tension free needs) also played important roles.