This Ph.D. level seminar will explore and critically examine principles,methodologies, and analytical approaches for research involving complex social/organizational systems and dynamics that span multiple levels of analysis (e.g., time, individual, dyad, team, organization, society). Topics of discussion include the historical foundations of research on social/organizational systems, methodologies and analytical tools for studying multilevel systems, and emerging techniques for representing dynamic phenomena in complex social/organizational systems. The goal of this course is to equip students with the requisite knowledge and skills for studying how human behavior, cognition, affect, and social interaction shape and are shaped over time in response to other actors and the environment, as well as how psychological, social, and organizational outcomes emerge from these processes.