Isidor Sadger

Isidor Isaak Sadger (29 October 1867 – 21 December 1942), born in Neu Sandez, Galicia, was a forensic medical doctor and psychoanalyst in Vienna.

Sadger believed that it was not enough to establish a spurious kind of heterosexual functioning or "masturbatio per vaginam", wanting instead to change a patient's "Sexualideal", the internal image of his sexual object.

Freud stated in a note in his revised 1910 edition of “Three Essays on the Theory of Sexuality” that his conclusions about homosexuality were partly based on information obtained from Sadger.

Sadger's main work, Die Lehre von den Geschlechtsverwirrugen [...] auf psychoanalytischer Grundlage was published in 1921.

Sadger followed Freud's idea that gay men unconsciously desire to castrate their fathers by rendering their male partners flaccid through orgasm so that they can magically incorporate their masculinity and finally obtain access to the mother.