Since 1977 he has been the director of the Institute.

He was assistant director of the Institute from 1917 to 1926.

He was unpaid director of the Institute from 1920 to 1946.

He was still director of the Institute when he died in 1936.

He has been director of the Institute since 1987.

Kiepeheuer was director of the Institute from 1943 until his death in 1975.

During 1965-1970 years she was the director of the Institute, and she remain the only women who took the office.

The director of the Institute is the professor holding the chair in medieval philosophy at the university.

He has been working as a director of the Institute for mental health for a year and a half.

Horkheimer, however, was seen as the most influential director of the Institute.