| Article ID: | iaor20114573 |
| Volume: | 35 |
| Issue: | 3 |
| Start Page Number: | 263 |
| End Page Number: | 269 |
| Publication Date: | Jun 2011 |
| Journal: | Journal of Productivity Analysis |
| Authors: | Carree Martin, Lokshin Boris, Belderbos Ren |
| Keywords: | productivity |
Recent empirical studies of firm‐level performance have tested complementarity in the case of multiple practices. These papers have drawn conclusions using potentially biased estimates of pair‐wise interaction effects. We develop a consistent and simple testing framework and test it against alternatives.