This paper proposes a new nonparametric test for conditional independence, which is based on the comparison of Bernstein copula densities using the Hellinger distance. The test is easy to implement because it does not involve a weighting function in the test statistic, and it can be applied in...

We examine the dependence of the performance effects of firms' network positions on the ages of the ties comprising them. Our analysis of Canadian investment banks' underwriting syndicate ties indicates that the performance benefits of closure increase with tie age, while benefits of bridging...