**About the Editor**

**Sandra G. L. Schruijer** is Professor of Organization Sciences at the Utrecht University School of Governance and Professor of Organizational Psychology at Tias School for Business and Society, Tilburg University, both in The Netherlands. Her research involves the psychological dynamics of conflict and collaboration within groups and between organizations. Sandra further heads Professional Development International, an institute that organizes professional development programs and consults organizations and managers with respect to interorganizational collaboration and large-scale change.
