An Index of Competitiveness and Cooperativeness for Normal-Form Games
基于标准式博弈的基本要素（玩家、策略和收益），将博弈分解为零和博弈与共同利益博弈，构建了一个衡量竞争与合作程度的指数，其比较静态分析与经济直觉一致，并支持实验发现。
We develop an index of competitiveness and cooperativeness that is based on the primitives of a normal-form game, i.e., players, strategies and payoffs. The index relies on the unique decomposition of a given game into a zero-sum game and a common interest game. The index decreases in the distance to its zero-sum part and increases in common interest part. The comparative statics of our index coincide with economic intuition. The index also supports experimental findings in well-known classes of games in the sense that more cooperative and less competitive behavior correlates with lower values of the index.