During which war did industrial psychology develop into a more acceptable, refined, diversified science and applied field, partly because its techniques and methods proved to be useful?

Answer 1

Industrial psychology developed into a more acceptable, refined, and diversified science and applied field during World War I. The war created a significant demand for psychological assessment and selection of military personnel, leading to the development and application of various psychological tests and methods. The effectiveness of these techniques in identifying suitable candidates for different roles helped to establish industrial psychology as a legitimate discipline in both military and civilian contexts.