Given the vast number of observations in a transparent environment, the interaction between players and referees in the National Basketball Association (NBA) provides a real-world laboratory that allows for observation and testing of implicit height-based biases (the so-called “Napoleon Complex”). Controlling for a plethora of referee-specific characteristics and including 4,463 regular season games from 2008 to 2012, we find that (i) more personal fouls are called when a relatively shorter three-person officiating crew is working and (ii) no more or fewer fouls are called when games involve relatively taller players. Such biases are probably not large enough to impact game outcomes but could affect gambling markets. Our findings support the conclusion that relatively shorter NBA referees officiate basketball games differently than their taller peers. The analysis spotlights an oft-suggested but rarely studied bias in a workplace where employees are heavily scrutinized and monitored.
This article analyzes fighter marginal products (MP) and marginal revenue products (MRP) for the largest component of Ultimate Fighting Championship (UFC) revenues: content. Most bouts are fought in the presence of fixed content revenues, and most fighters go their entire careers without supplying labor services for variable revenue pay-per-view (PPV) main cards. After demonstrating that winning does not sufficiently explain variation in PPV buys, I estimate fighter MP and MRP using U.S. consumer search activity from Google Trends as a proxy for fighter popularity. Results suggest that a sizable percentage of UFC fighters generated little to no MRP, while a small number of PPV main card fighters were responsible for 75% of aggregate MRP. Other PPV main card fighters who did not drive the majority of MRP appeared to generate more than some compensation estimates. An apparent decline over time in the UFC’s inframarginal consumer base is also discussed.
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