A large web-based survey found that (a) awareness of the 15% to 20% tipping norm partially mediates Black–White and Hispanic–White differences in restaurant tip size and (b) norm awareness predicts restaurant tip size for Blacks, Hispanics, and Whites alike. These findings replicate and extend previous research results reported by Lynn and suggest that race differences in tipping can be reduced by reducing race differences in awareness of the 15% to 20% restaurant tipping norm.
Lynn, M. (2014). The contribution of norm familiarity to race differences in tipping behavior: A replication and extension. Journal of Hospitality & Tourism Research, 38, 414-425. doi:10.1177/1096348012451463. Retrieved [insert date], from Cornell University, School of Hospitality Administration site:http://scholarship.sha.cornell.edu/articles/588/