-by-step innovation. Innovations result from costly R&D investments and move technology up one step. Competition is inversely measured by …-and-neck. All these results are consistent with the predictions of step-by-step innovation models …

This paper investigates the relationship between product market competition (PMC) and innovation. A growth model is … reduce innovation incentives for laggards. There are four key predictions. First, the relationship between product market … competition (PMC) and innovation is an inverted U-shape. Second, the equilibrium degree of technological neck-and-neckness' among …