Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Any symmetric mixed-strategy equilibrium in a Tullock contest with intermediate values of the decisiveness parameter (“ $$2>R>\infty $$ 2 > R > ∞ ”) has countably infinitely many mass points. All probability weight is concentrated on those mass points, which have the zero bid as their sole point of accumulation. With contestants randomizing over a non-convex set, there is a cost of being “halfhearted,” which is absent from both the lottery contest and the all-pay auction. Numerical bid distributions are generally negatively skewed and exhibit, for some parameter values, a higher probability of ex-post overdissipation than the all-pay auction. Copyright The Author(s) 2015