Hienerth, Christoph; von Hippel, Eric; Berg Jensen, Morten - In: Research Policy 43 (2014) 1, pp. 190-201
In this paper we report upon a first empirical exploration of the relative efficiency of innovation development by product users vs. product producers. In a study of over 50 years of product innovation in the whitewater kayaking field, we find users in aggregate were approximately 3× more...