The study of educational psychology can help teachers and prospective theacher to improve their understanding of children and youth, and to become more effective in their work. The twofold purpose of the science is to develop and apply psychological principles in the interests of better teaching.
In developing their principles of teaching, educational psychologists concern with every field of psychology, especially the fields of learning, child and adolescent development, social psychology, individual differences, and mental health. From these fields they have developed principles that are applicable to all the major functions of teaching.