What factors underlie industry differences in research intensity and productivity growth? We develop a multi … consumer preferences. We find that long run industry differences in both productivity growth and R&D intensity mainly reflect … research cannot account for industry differences in productivity growth rates, and that variation in intertemporal knowledge …

We compute rates of growth in labor productivity during the 1973-80 period for samples of individual manufacturing … contribution of such expenditures to productivity growth was about the same in both countries. Hence, the rather large differences … on the observed rates of productivity growth between the two countries can not be accounted for by differences in either …