 As a member of the APA's Board of Trustees and International Affairs Committee, Hartmann led and participated in human rights missions to examine mental health conditions under apartheid in the Union of South Africa and under dictatorship of Augusto Pinochet in Chile.Working closely with Melvin Sabshin, Hartmann traveled to the Soviet Union to meet with dissident psychiatrists and to examine evidence of the abuse of psychiatry by the Soviet government.Hartmann's findings contributed to the successful efforts of Melvin Sabshin and the APA to persuade the World Psychiatric Association World Psychiatric Association (WPA) to establish an Ethics Committee to investigate abuses of psychiatry.