Carnegie Mellon University

Matthew  Diabes

Matthew Diabes

Ph.D. Student, Tepper School of Business

5000 Forbes Avenue
Pittsburgh, PA 15213

Areas of Study

Organizational Behavior and Theory


Matthew Diabes is a PhD Candidate in Organizational Behavior and Theory at the Tepper School of Business at Carnegie Mellon University. Previously, Diabes received an MS in Industrial Administration from Tepper and a BS in Psychology and Philosophy and a certificate of Public and Professional Writing from the Kenneth P. Dietrich School of Arts and Sciences at the University of Pittsburgh.


  • Carnegie Mellon University – MS (Organizational Behavior and Theory) - 2018
  • University of Pittsburgh – BS (Psychology and Philosophy) - 2012
  • University of Pittsburgh - Certificate (Public and Professional Writing) - 2012


His research is motivated by the central question, "What conditions enable positive, productive interpersonal relationships to emerge, and how are they maintained?" Specifically, his research interests include the formation and management of relationships, communication and coordination processes, interpersonal trust and knowledge-sharing on teams, and the organizational value of  psychological well-being. He has conducted research in laboratory environments with the Center for Behavioral and Decision Research (Carnegie Mellon) and the University of Pittsburgh as well as in field settings in the financial and health care sectors. 

His current projects address research questions about:

  • The impact of psychological well-being on the emergence of trust, knowledge-sharing, and coordination processes on teams
  • The effects of team dynamics on the performance of high-stakes teams 
  • The processes that enable geographically-dispersed teams to maintain knowledge-sharing relationships 
  • Strategies to repair intra-team relationships following transgressions 
Diabes has presented his work at a variety of conferences, including the annual meetings of the Association for Psychological Science and the Interdisciplinary Network for Group Research (INGRoup) and is slated to present his work in the summer of 2019 at the annual meetings of INGRoup, the Academy of Management, the Columbia/NYU East Coast Doctoral Conference in Management, the Association for Computing Machinery Collective Intelligence conference, and the Carnegie Mellon University Innovation and Impact Exhibition.


Working Papers 

Diabes, M. A. & Cohen, T. R. Psychological Adjustment in Teams: Team Member Well-Being Facilitates Transactive Memory Emergence.

Diabes, M. A., Cohen, T. R., Weingart, L. R., Kahn, J. M. Psychological Safety and Evidence-Based Practice in Intensive Care Units.

Diabes, M. A. & Schumann, K. Gender and Apology in Workplace Perceptions and Career Advancement.

Mayo, A. T., Diabes, M. A., & Woolley, A. W. Collective Intelligence: The Role of Boundary Activities in Outperforming Expectations.


  • Carnegie Mellon University Paul S. Goodman Doctoral Dissertation Award, 2021
  • NTR-Peterson Research Grant, ($9,789; Ranked #1 of proposals), Negotiations & Team Resources Institute, 2019
  • Doctoral Researcher – Task Force on Campus Climate: Diversity and Inclusion, Carnegie Mellon University, 2019
  • Participant – NSF Workshop: Fostering Gender and Work-Life Inclusion, Purdue University, 2018
  • Graduate Student Assembly / Provost Conference Funding, 2018
  • Center for Behavioral and Decision Research Grant, Carnegie Mellon University, 2018
  • Center for Behavioral and Decision Research Grant, Carnegie Mellon University, 2017