We develop a nonparametric and ordinal approach for testing pure strategy Nash equilibrium play in games with monotone best responses, such as those with strategic complements/substitutes. The approach makes minimal assumptions on unobserved heterogeneity, requires no parametric assumptions on...

This paper presents general results on the effect of endogenous technical change on relative wages in a simple general equilibrium model that covers several more elaborate models of technology choice. The results are based on a simple and intuitive notion of complementarity between technology...