Psychology is a science that deals with the study of behaviour and experience at human and animals, where these abilities are attempted explained through theories based on observation and measuring. At the Department of Psychology, NTNU, science and teaching in the subject is mainly build around five different perspectives: Biology psychology, Cognitive psychology, Social psychology, Personality psychology and Develpmental psychology.

In this way, the attempt is to pass on basic features of psychology as a science, that the same fenomenas or cases very often can be described, explained and comprehended in several ways. This require strong demands on the students ability to think independant and criticly. As part of the teaching plan it is therefor put strong attention to create an offer that through reading, teaching and scientific experience will give the students a wide thematical, theoretical and methodical education in the science.

Along with the bachelor grade, continuing studies leads to the master grade. The profession studies in psychology lead to the title "Psychologist" and gives an opportunity to do practical clinical practice. This is a a 5 year long profession study.

The Department of Psychology was founded at The College of Arts and Science in 1967. In the Autumn of 1968, at the same time as the University of Trondheim was founded, basic psychology courses were initiated with 35 students attending. The University of Trondheim was a merger of The College of Arts and Science (AVH) and The Norwegian Institute of Technology (NTH). In addition the department was responsible for the psychology teaching as part of Examen Philosophicum. The Department of Psychology was the first psychology department to offer "mellomfag" and majors in psychology (approved by the Ministry of Education and Research in 1977) and was also the only department to offer majors in psychology until the Quality Reform of higher education was introduced in 2003. The department also offers teaching and supervision to PhD students within psychology.

Since the Spring of 1995 the Department of Psychology also has offered professional clinical psychology courses (cand.psychol). The department currently has more than 1000 registered students at lower levels, approximately 120 masters students within psychology, and 240 cand.psychol students. The department has 75 faculty and and an administration of 18. The Summer of 2002 the Center of Biological Memory was established as a Centre of excellence, wich became an independent administrative unit in 2005.