Predictors of male and female servers' average tip earnings

Tips represent a substantial portion of restaurant waiters' and waitresses' incomes. We report a study that examines several potential predictors of t he differences in servers' average tip earnings. Our results indicate that servers earn larger average sales-adjusted tips if they are attractive fema les, better service providers, and high self-monitors. However, these effec ts hold up only for evening tips. None of the variables in this study predi cted servers' average lunch tips. The methodological, theoretical, and mana gerial implications of these findings are discussed.