The Institute of Behavioral Sciences (IBS) is a non-profit organization established by eminent psychiatrist Prof Haroon Ahmed and renowned nuclear scientist and the national hero of the country, Dr Abdul Qadeer Khan.

In 1995 Dr Karim Khawaja, Consultant Psychiatrist and member of PAMH, identified a piece of land at the Ojha Institute of Chest Diseases. A six-acre plot of land was subsequently earmarked for Pakistan Association for Mental Health to establish the Institute of Behavioral Sciences (IBS). The allotment process was quickly completed in the spirit of a non-profit organization to set up IBS, a mental health facility, on a non-commercial basis. The land was selected in July 1995, allotment took place on 5th November 1995, and physical possession was taken in the same year on 12th November. In August 2017, the administrative control of the Institute of Behavioral Sciences was taken over by Dow University of Health Sciences with the efforts of Vice Chancellor Prof Dr M Saeed Quraishy TI, and the Institute of Behavioral Sciences was also given the status of Department of Psychiatry Dow International Medical College.