“…There are any number of factors that may play a role in determining the nature of the direct relationship, including sample characteristics, type of dispersion, and the set of control variables used, to name a few. But, studies during the time period reviewed here have brought much greater clarity when one considers whether the observed pay dispersion either can be explained by legitimate factors such as individual incentives, seniority, education, or tenure (Kepes et al 2009, Shaw et al 2002, Shaw & Gupta 2007 or is the result of legitimate worker inputs such as historical performance (Fredrickson et al 2010, Trevor et al 2012. Like in every area of study, some messy findings appear in the literature, but the preponderance of the evidence suggests that explainable or legitimate pay dispersion is generally positively related to organizational productivity and safety, team performance, and individual performance.…”