Firms increasingly source new ideas and knowledge from alliances with external partners. Laursen and Salter's (2006) seminal research shows that while such openness in innovation benefits firms, too much openness can have a negative effect on innovation performance. We provide a conceptual replication of this finding, relying on a unique longitudinal panel data set comprising three different innovation performance metrics: product and service innovations, process innovations, and marketing innovations.
Online Appendix | 107.00000028_app.pdf
This is the article's accompanying appendix.