Part I: Theory.- 1. Engaging with Behavioral Operational Research: On Methods, Actors and Praxis; L. Alberto Franco and Raimo P. Hamalainen.- 2. Behavior with Models: The Role of Psychological Heuristics in Operational Research; Konstantinos V. Katsikopoulos.- 3. Behavior in Models: A Framework for Representing Human Behavior; Andrew Greasley and Chris Owen.- 4. Behavior beyond the Model; Leroy White.- Part II: Methodology.- 5. Simulation and Laboratory Experiments: Exploring Self-Organizing Behavior in a Collective Choice Model; Santiago Arango-Aramburo, Ann van Ackere and Erik R. Larsen.- 6. Misperception of Behavioral Operations and Bodies of Knowledge; Paulo Goncalves and Sebastian Villa.- 7. Agent-Based Modeling and Behavioral Operational Research; Duncan A. Robertson.- 8. Modeling Behavioral Decision Making: Creation and Representation of Judgment; Martin H. Kunc.- 9. Big Data and Behavior in OR: Towards a "Smart OR"; Leroy White, Katharina Burger and Mike Yearworth.- 10. Behavioural Issues in the Practical Application of Scenario Thinking: Cognitive Biases, Effective Group Facilitation and Overcoming Business-as-Usual Thinking; Stephanie Bryson, Megan Grime, Adarsh Murthy and George Wright.- 11. The Impact of Group Model Building on Behaviour; Etienne A.J.A. Rouwette.- Part III: Practice.- 12. Behavioral Operational Research in Practice: A Brief Overview; Katharina Burger and Jonathan Malpass.- 13. Healthcare: Human Behavior in Simulation Models; Sally C. Brailsford.- 14. Service Operations: Behavioral Operational Research in BT; Jonathan Malpass.- 15. Smart Cities: Big Data and Behavioral OR; Leroy White, Katherina Burger and Mike Yearworth.- 16. Mergers and Acquisitions: Modelling Decision Making in Integration Projects; Shanie Atkinson and Michael Shayne Gary.- 17. Supporting Strategy: Behavioral Influences on Resource Conceptualization Processes; Kenneth Huh and Martin H. Kunc.- Part IV: Future Directions.- 18. The Past, Present and Futures of Behavioral Operational Research; Geoff Royston.