He is the director of a research project Pregnancy and Abortion by Young Women and
a member of the board of directors for the organisation pro familia, an NGO for sexual and reproductive health and rights in Germany.
Together with Martin Dannecker and Volkmar Sigusch, he is editor of Beiträge zur Sexualforschung (87 editions which is published by Psychosozial-Verlag. Schmidt is also co-editor of the magazine Zeitschrift für Sexualforschung in the Georg Thieme Verlag.
Schmidt has written extensively on the sociological status of pedophilia in modern society.