I conduct a (quasi) field experiment to study if individuals satisfy the implications of mixed strategy equilibrium when they repeatedly face the same opponents. An important advantage of my dataset is that it contains repeated observations on heterogeneous pairs of soccer players, a situation...

I prove the numerical equivalence between Pearson's independence test statistic for categorical variables and the Lagrange Multiplier and overidentifying restrictions test statistics in several popular linear and non-linear regression models. I also show that its asymptotically equivalent...