Following periods of intense technological innovation, R&D is a critical driver of technology diffusion, but it is subject to frictions that can lower it below the level firms would undertake otherwise. We study whether sentiment can counterbalance these frictions and thus strengthen the link between firm-level R&D and lagged aggregate innovation. We find a positive answer for low-tech firms, which represent the main conduit for technology diffusion.
Nothing contributes so much to the prosperity and happiness of a country as high profits