Dossche, Maarten; Heylen, Freddy; Van den Poel, Dirk - 2006
System to estimate the price elasticity and curvature of demand for a wide range of products. Our results support the … introduction of a kinked (concave) demand curve in general equilibrium macro models. We find that the price elasticity of demand is … correlation between the estimated price elasticity/curvature and the observed size or frequency of price adjustment in our data …