The National Association for Research & Therapy of Homosexuality (NARTH), also known as the NARTH Institute, is a US organization that offers conversion therapy and other regimens that purport to change the sexual orientation of people with same-sex attraction. NARTH has been described by a Christian ministry group as a ministry partner that is "a multi-disciplinary professional and scientific organization dedicated to the service of persons who experience unwanted homosexual (same-sex) attractions (SSA)". NARTH was founded in 1992 by Joseph Nicolosi, Benjamin Kaufman, and Charles Socarides. Its headquarters are in Encino, California, at the Thomas Aquinas Psychological Clinic and has operated under the Alliance for Therapeutic Choice and Scientific Integrity (ATCSI) since 2014. NARTH's leaders disagree with the view of the world's major mental health organizations that homosexuality is not a disorder and that conversion therapy is pseudoscience.
NARTH was founded in 1992 by Benjamin Kaufman, Charles Socarides, and Joseph Nicolosi. In an article titled "In Defense of the Need for Honest Dialogue", Kaufman wrote that the three of them founded NARTH because the American Psychiatric Association and similar professional organizations "had totally stifled the scientific inquiry that would be necessary to stimulate a discussion" about homosexuality. NARTH's leaders argue that the political atmosphere had changed, making it politically incorrect even to suggest the need for a dialogue that considers the question of the normality of homosexuality. Kaufman states that NARTH was formed in response to censorship of scientific investigation of politically unpopular views.
The organization had 501(c)(3) tax exempt status, which was revoked by the Internal Revenue Service in September 2012 due to ongoing failure to file required paperwork.
NARTH claims to be a secular organization, differentiating it from other ex-gay groups that are primarily religious in nature. Nevertheless, NARTH often partners with religious groups, such as Jews Offering New Alternatives for Healing, Joel 2:25 International, and Evergreen International in Positive Alternatives to Homosexuality. The NARTH website contains a resource list of theological articles.