Stephen Guastello

Stephen Guastello is a Professor at Marquette University, specializing in Psychology. His research spans nonlinear dynamics, organizational behavior, cognitive workload, and human-computer interaction.

• Ph.D., Psychology (Illinois Institute of Technology, 1982)
• M.A., Psychology (Washington University, 1979)
• B.A., Psychology (Johns Hopkins University, 1977)

Guastello's work focuses on nonlinear dynamical systems applied to organizational phenomena, including team synchronization, leadership emergence, accident analysis, and cognitive fatigue. He has developed computational tools like Synccalc and Orbital Decomposition for analyzing group dynamics and categorical data patterns. His research demonstrates how chaos theory, catastrophe models, and complexity science can explain phenomena ranging from emergency response team behavior to financial decision-making.

Recent publications examine team performance variability, autonomic synchronization in crisis scenarios, and the interplay between elasticity and rigidity in organizational resilience. He serves as Editor-in-Chief of Nonlinear Dynamics, Psychology, and Life Sciences, the flagship journal of the Society for Chaos Theory in Psychology & Life Sciences, and holds editorial board positions at Theoretical Issues in Ergonomics Science.