[1] Methods that have been used to this end include forms of brain surgery, surgical or chemical (hormonal) castration, aversion therapy treatments such as electric shocks, nausea-inducing drugs, hypnosis, counseling, spiritual interventions, visualization, psychoanalysis, and arousal reconditioning.
There is a scientific consensus that conversion therapy is ineffective at changing a person's sexual orientation or gender identity and that it frequently causes significant long-term psychological harm.
[2] The position of current evidence-based medicine and clinical guidance is that homosexuality, bisexuality, and gender variance are natural and healthy aspects of human sexuality.
[4] Historically, conversion therapy was the treatment of choice for individuals who disclosed same-sex attractions or exhibited gender nonconformity, which were formerly assumed to be pathologies by the medical establishment.
[6][better source needed] According to researcher Douglas C. Haldeman, SOCE and GICE should be considered together because both rest on the assumption "that gender-related behavior consistent with the individual's birth sex is normative and anything else is unacceptable and should be changed".
[4] Despite their lack of scientific backing, some socially or religiously conservative activists continued to argue that if one person's sexuality could be changed, homosexuality was not a fixed class such as race.
[4] In 2001, conversion therapy attracted attention when Robert L. Spitzer published a non-peer-reviewed study asserting that some homosexuals could change their sexual orientation.
[16] Robert Stoller advanced the theory that gender-nonconforming behavior and expression in children assigned male at birth (AMAB) was caused by being overly close to their mother.
[16] In the 1970s, UCLA psychologist Richard Green recruited Ole Ivar Lovaas to adapt the techniques of Applied Behavior Analysis (ABA) therapy to attempt to prevent children from becoming transsexual.
[16][18][19][20] A frequent motivation for adults who pursue conversion therapy is their religious beliefs, especially evangelical Christianity and Orthodox Judaism, that disapprove of same-sex relations.
[25] Other methods of aversion therapy in addition to electric shock included ice baths, freezing, burning via metal coils, and hard labor.
In the context of the Cold War, Western psychologists ignored the poor results of their Czechoslovak counterparts, who had concluded that aversion therapy was not effective by 1961 and recommended decriminalization of homosexuality instead.
[40] Endocrinologist Carl Vaernet attempted to change homosexual concentration camp prisoners' sexual orientations by implanting a pellet that released testosterone.
[44][45][46][47] The ex-gay umbrella organization Exodus International in the United States ceased activities in June 2013, and the three member board issued a statement which repudiated its aims and apologized for the harm their pursuit has caused to LGBT people.
In 1967, Canadian psychiatrist Peter Roper published a case study of treating 15 homosexual (some of which would probably be considered bisexual by modern standards) people with hypnosis.
Haldeman notes that Bieber's methodology has been criticized because it relied upon a clinical sample, the description of the outcomes was based upon subjective therapist impression, and follow-up data were poorly presented.
[8] For example, he wrote: The term reparative refers to Nicolosi's postulate that same-sex attraction is a person's unconscious attempt to "self-repair" feelings of inferiority.
[56][57] After California banned conversion practices, Nicolosi argued that "reparative therapy" didn't attempt to directly change sexual orientation but instead encourage exploration into its underlying causes, which he believed was often childhood trauma.
[61][63][64][58][66] Practitioners of GET often view medical transition as a last resort and propose their patient's dysphoria is caused by factors such as homophobia, social contagion, sexual trauma, and autism.
[69] In 2017, Richard Green published a legal strategy which called for circumventing bans on conversion therapy by labelling the practice "gender identity exploration or development".
[72] GETA co-founder Lisa Marchiano stated U.S. President Joe Biden's executive order safeguarding trans youth from conversion therapy would have a "chilling effect" on GET practices.
[73] The American College of Pediatricians, a small group aligned with the Christian Right,[Note 1] has cited numerous studies from SEGM to claim GET is necessary to restore transgender people's "biological integrity".
[77] Modern-day practitioners of conversion therapy—primarily from a conservative religious viewpoint—disagree with current evidence-based medicine and clinical guidance that does not view homosexuality and gender variance as unnatural or unhealthy.
[79] A 2022 YouGov poll found majority support in England, Scotland, and Wales for a conversion therapy ban for both sexual orientation and gender identity, with opposition ranging from 13 to 15 percent.
[80] Some jurisdictions have criminal bans on the practice of conversion therapy, including Canada, Ecuador, France,[81] Germany, Malta, Mexico and Spain.
[85] The same year, UN Independent Expert on sexual orientation and gender identity, Victor Madrigal-Borloz, said that conversion therapy practices are "inherently discriminatory, that they are cruel, inhuman and degrading treatment, and that depending on the severity or physical or mental pain and suffering inflicted to the victim, they may amount to torture".
More recent examples include: Boy Erased, The Miseducation of Cameron Post, Book of Mormon musical, Ratched, and documentary features Pray Away, Homotherapy: A Religious Sickness.
[94][95] National health organizations around the world have uniformly denounced and criticized sexual orientation and gender identity change efforts.
[102] There is also concern in the mental health community that the advancement of conversion therapy can cause social harm by disseminating inaccurate views about gender identity, sexual orientation, and the ability of LGBT people to lead happy, healthy lives.