E. Salas, Series Foreword. Part 1. Overview. T.D. Allen, L.T. Eby, The Study of Interpersonal Relationships: An Introduction. W.K. Campbell, S.M. Campbell, Theoretical Approaches to Workplace Relationships: Suggestions from Research on Interpersonal Relationships. Part 2. Perspectives on the Positive and Negative Aspects of Relationships. J.E. Bono, D.J. Yoon, Positive Supervisory Relationships. B.J. Tepper, M. Almeda, Negative Exchanges with Supervisors. C.D. McCauley, Reflection and Integration: Supervisor-Employee Relationships. J.R.B. Halbesleben, Positive Coworker Exchanges. R.W. Griffin, A.C. Stoverink, R.G. Gardner, Negative Coworker Exchanges. P.E. Spector, Negative and Positive Coworker Exchanges: An Integration. J.A. LePine, J.R. Methot, E.R. Crawford, B.R. Buckman, A Model of Positive Relationships in Teams: The Role of Instrumental, Friendship, and Multiplex Social Network Ties. M.K. Duffy, K. Lee, Negative Interpersonal Exchanges in Teams. G. Chen, P.N. Sharma, Bringing Together the Yin and Yang of Social Exchanges in Teams. H. Liao, D. Woods Searcy, Positive Exchange Relationships with Customers. A.A. Grandey, P. Grabarek, S. Teague, Negative Relational Exchanges of Customers and Employees: Performace and Well-being Implications. B. Schneider, K. Lundby, Service Relationships: Nuances and Contingencies. J.H. Greenhaus, R. Singh, Positive Nonwork Relational Exchanges. T.C. Rothrauff-Laschober, T.D. Allen, L.T. Eby, Negative Nonwork Relational Exchanges and Links to Employees' Work Attitudes, Work Behaviors, and Well-being. J. Holliday Wayne, Integrating Positive and Negative Nonwork Relational Exchanges: Similarities, Differences, and Future Directions. Part 3. Methodological Approaches to the Study of Relationships. D.J. Brass, D.S. Halgin, Social Networks: The Structure of Relationships. C.E. Lance, R.J. Vandenberg, Dynamic Change and Levels of Analysis Issues in the Study of Relationships at Work. Part 4. New Frontiers for Research on Relationships. L.T. Eby, T.D. Allen, New Frontiers: An Integrative Perspective on How Relationships Affect Employee Attitudes, Behavior, and Well-being.