Answer and Explanation:
Human factors psychology and personnel psychology are both focused on humans in their workplace or generally workplace productivity. While human factors psychology is concerned with how human interacts with machines in efficient and effective workplace production, personnel psychology is concerned with staffing requirements, recruitment and satisfaction on the job. In other words while human factors psychology deals more with engineering roles and how tech can boost human requirements in workplace production, personnel psychology deals with human to human relationship such as staff and managers and staffing needs, morale as wells as performance at work