Final answer:
The OB model defines the field of Organizational Behavior by laying out its Foundational Assumptions, which serve as a baseline for the theories and models within the discipline.
Step-by-step explanation:
The OB model presented in the chapter defines the field of OB and stakes out its Foundational Assumptions. Organizational Behavior (OB) as a field is underpinned by certain assumptions that guide how researchers and professionals understand and interact with organizational phenomena. These assumptions, much like hypotheses, provide a baseline for theories and models within OB. They shape the lens through which organizational processes are viewed, including how people behave individually and in groups within the business environment.