innovation. We identify significant patents based on textual similarity of a given patent to previous and subsequent work: these … aggregate, sectoral, and firm level. Our technology indices span two centuries (1840-2010) and cover innovation by private and …

of creative destruction, we draw a distinction between technological innovation advanced by the firm, or its competitors …. Using administrative data from the United States, we find that own firm innovation is associated with a modest increase in … worker earnings growth, while innovation by competing firms is related to lower future worker earnings. Importantly, these …

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 …

effect on innovation. We develop a simple "trapped factor" model of innovation that is consistent with these empirical …

-run growth by increasing the profit from innovation. In the short run, factors of production must be reallocated inside firms …, which lowers the opportunity cost of innovation, generating an additional trapped factor effect. Starting from a baseline …

We propose a new measure of the economic importance of each innovation. Our measure uses newly collected data on … our measure suggests that technological innovation accounts for significant medium-run fluctuations in aggregate economic …

discuss some implications of the big shift for pay, productivity, and the pace of innovation. Over the next five years, U …