Bertold Wiesner https://en.wikipedia.org/wiki/Bertold_Wiesner

Dr Bertold Paul Wiesner FRSE (1901–1972) was an Austrian Jewish physiologist noted firstly for coining the term 'Psi' to denote parapsychological phenomena

..During 1926 while Wiesner was still in Austria, he began investigating the role of hormones in regulating fertility and their impact on fetal development. Wiesner also researched the possibility of preventing and terminating pregnancy by physiological means without mechanical intervention based on oral ingestion of manufactured substances containing hormones. He presented his first paper at the First International Congress for Sex Research organized by the psychiatrist Albert Moll in Berlin.

Albert Moll https://en.wikipedia.org/wiki/Albert_Moll_(German_psychiatrist)

Albert Moll (German: [mɔl]; 4 May 1862, Lissa – 23 September 1939, Berlin) was a German psychiatrist and, together with Iwan Bloch and Magnus Hirschfeld, the founder of modern sexology.[1] Moll believed sexual nature involved two entirely distinct parts: sexual stimulation and sexual attraction.

..In The Sexual Life of the Child, he encouraged parents to provide sex education to their children.

Moll was a leading researcher on subject of hypnotism.

Moll was strong critic of mysticism, occultism and spiritualism. Even though he studied parapsychical research he was critical of it and offered naturalistic psychological explanations for paranormal phenomena. He frequently indulged in the unmasking of mediums and séances.

https://de.wikipedia.org/wiki/Albert_Moll

..After completing his studies, he embarked on a two-year trip through Europe and visited important doctors in Vienna , Budapest and London . In Paris he learned about the method practiced by Jean-Martin Charcot to cure hysteria through hypnosis . In Nancy , he joined the psychotherapy school founded by Ambroise-Auguste Liébeault and Hippolyte Bernheim , from which Freud (two years later) also benefited. In Graz he met Richard von Krafft-Ebing , the author of the just publishedPsychopathia sexualis .

..Moll was politically conservative, never married and dedicated his life to research. He often seemed like a quarrelsome loner. He despised both Hirschfeld and Freud as "scientific charlatans " and countered many of their steps with his own initiatives.

..This makes it clear that Moll was counted among the closer circle of trust of the Liebenberger Kreis . [1] In addition to this indication, the bachelorhood and the conversion is not aware of Moll's private life. What is certain, however, is that homosexuality plays a central role in his extensive scientific work. The essay published in 1902 How do homosexuals recognize and communicate with each other? testifies to inside knowledge.

...After Hirschfeld, Bloch and Albert Eulenburg founded the first sexological society with the Medical Society for Sexology and Eugenics in 1913 , Moll also founded the International Society for Sexual Research in Berlin in the same year . From 1915 she also published the archive for sexual research . After the sexual science discussion had previously been contested by Bloch and Hirschfeld alone, from now on other voices also spoke up. It was published by Max Marcuse . After 1921 by the Institute for Sexual ScienceThe world's first sexology congress was organized by the International Society for Sex Research in 1926, the first international congress for sex research in Berlin. It lasted seven days and covered topics ranging from biology to sociology, ethics, aesthetics and religion and from statistics to economics. Hirschfeld was not invited, but Freud was. The opening session took place in the plenary hall of the Reichstag . A second congress was held in London in 1930.

During the First World War , Moll was an expert on the " General Staff " for psychological warfare .