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Tipping is a phenomenon that illustrates the importance of social norms and psychological reasons in motivating economic behavior. People tip because this is the social norm and disobeying the norm results in psychological disutility. Tipping is also economically important: in the USA alone, millions of workers derive most of their income from tips, and annual tips amount to dozens of billions of dollars. Tipping is also prevalent in numerous other countries around the globe. While tipping has been studied extensively by psychologists, it has received very little attention from economists. In order to encourage other economists to research this interesting phenomenon, the author discusses the implications of tipping for several areas in economics: social economics, behavioral economics, labor economics, and economics of information/management strategy. Also many ideas are provided for future research both as part of the discussion and in the concluding section.

Previous studies about the academic publishing process consider the publication delay as starting from the submission to the publishing journal. This ignores the potential delay caused by rejections received from previous journals. Knowing how many times papers are submitted prior to publication is essential for evaluating the importance of different publication delays and the refereeing process cost, and can improve our decisions about if and how the review process should be altered, decisions that affect the productivity of economists and other scholars. Using numerical analysis and evidence on acceptance rates of various journals, estimates that most manuscripts are submitted between three and six times prior to publication. This implies that the first response time (the time between submission and first editorial decision) is much more important than other parts of the publication delay, suggesting important policy implications for editors and referees.