Zhang Dajun, the editor-in-chief of the third edition, defines educational psychology as: educational psychology is a discipline that studies the psychological activities of the subjects in the educational and teaching situation and their development and change mechanisms, laws and promotion strategies.

2. Editor-in-chief, Liu Rude's Contemporary Educational Psychology Edition defines educational psychology as: it studies the psychological activities of educators and educatees in the process of education and teaching and their phenomena.

And the law of change.

It is an interdisciplinary subject of educational science and psychological science. Educational psychology is a science that studies the basic psychological laws of teaching and learning in educational and teaching situations. It mainly studies the psychological process of teacher-student interaction and psychological phenomena in the process of teaching and learning.

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