Define Psychology?

The Greek words Psyche and Logos are the source of the word "psychology." The words "psyche" and "Logos" both refer to the soul. So, the original definition of psychology was "science of the soul." The purpose of psychology, according to older psychologists, was to investigate the make-up, history, and destiny of the human soul. However, soul is a metaphysical concept. We cannot do scientific studies on the soul since it cannot be seen, observed, or touched. Then, in 1911, W.B. Pillsbury and J.B. Psychology was also referred to be the science of behaviour by Watson in 1912.