Abstract: | This article provides a historical overview of industrial–organizational (I‐O) psychology and its relationship to the field of performance improvement (PI). I‐O's history is initially described within the context of the broad science of psychology. Key points of intersection between I‐O and PI are identified, including the behaviorist movement and I‐O psychologist Dr. Thomas F. Gilbert. The article then briefly reviews the typical training for doctoral and master's‐level I‐O students and concludes with observations regarding the field of PI from the viewpoint of an I‐O psychologist. |