 Among his well-known students and assistants are Emil Kraepelin (1856–1926), Franz Nissl (1860–1919), Auguste-Henri Forel (1848–1931), Sigbert Josef Maria Ganser (1853–1931) and Oskar Panizza (1853–1921).As director of mental institutions, Gudden advocated a no-restraint policy, humane treatment of the mentally ill, communal social interaction amongst patients, and a well-trained medical staff.These were considered innovative, if not revolutionary ideas concerning mental health treatment in the mid-19th century.