Personnel psychology was developed to better understand work behavior and one influential figure was Hugo Munsterberg.
Personnel psychology is the area of industrial/organizational psychology that primarily deals with the recruitment, selection and evaluation of personnel, and other job aspects such as morale, job satisfaction, and relationships between managers and workers in the workplace. One influential figure in the beginning of this new area was Hugo Munsterberg, a German psychologist who was trained by Wilhelm Wundt and who also worked with William James. 
