How many years has educational psychology been an independent discipline?
1903, American psychologist Thorndike continued the research results of many educators and thinkers on the relationship between education and psychology, and published the book Educational Psychology on the basis of his own experimental research, making educational psychology an independent discipline. This is written in a book on educational psychology, and the answer may be problematic. The pre-service training of teachers in Hubei also has this problem, including the option 1903.