Joseph Nicolosi, PhD

Encino California 91436


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Practice Details

  • Work With

  • Adolescents, adolescents, adults, adults, children, couples, couples, families, families, Office Visit, Telephone/Online Video Counseling
  • Message from Therapist

  • For the past thirty years, I have worked extensively with Christian and Catholic families who are struggling with personal and relationship issues of all kinds.As the originator of what is known as "reparative therapy," I also work with men and women who seek to reduce their unwanted homosexual attractions and develop their heterosexual potential. If you share my belief that humanity was designed for gender complementarity and opposite-sex marriage, then perhaps I can help you live out your deeply held convictions. For more information, see the mental-health association website,, where my book excerpts have been posted online, also my own website, I am the author of "Reparative Therapy of Male Homosexuality" (Jason Aronson, Inc.), "A Parent's Guide to Preventing Homosexuality" (InterVarsity Press), "Case Stories of Reparative Therapy" (Aronson) and the 2009 InterVarsity book, "Shame and Attachment Loss." I have presented clinical workshops for therapists in Rome (at The John Paul II Institute for Marriage and The Family,) the U.S. , Milan (Italy), England , Germany , and Mexico, and am I the author of several studies published in peer-reviewed professional journals.  

  • Other Office Info

    Practice Info

  • Bio:
  • Biographical Information:Joseph Nicolosi, Ph.D.A graduate of the New School for Social Research (M.A.) and graduate of the California School of Professional Psychology (Ph.D.). Licensed as a psychologist in California in 1980 (License #6556), with license remaining current. Member in good standing of the American Psychological Association (APA).In 1980, founded the Thomas Aquinas Psychological Clinic in Encino, California, and has served since that time as its Clinical Director, supervising a staff of from five to ten therapists. Specialty is the treatment of men who wish to diminish their same-sex attractions and develop their heterosexual potential.One of three founding members--and former President--of the National Association for Research and Therapy of Homosexuality, a 1,000 member professional association founded in 1992 to support and educate the mental-health profession about same-sex attraction ( NARTH is committed to respect for diversity”whether a person seeks to identify as gay, or to work toward change. Its web site is visited by over 100,000 people a month. It is the only secular group in the U.S. which protects the rights of therapists to counsel clients with unwanted homosexuality.Published Books: Reparative Therapy of Male Homosexuality, 1992 (published by Jason Aronson, Inc.)Also an Italian translation (published by Sugarco Editizioni) and a Turkish translationHealing Homosexuality,1994 ( Jason Aronson, Inc.)Also a German translation (published by Aussaat) A Parents Guide to Preventing Homosexuality 2002 (Intervarsity Press)Also an Italian translation (Sugarco Editizioni, Spanish translation ( I.I.E.F. Ed.), Portuguese translation (Shedd Publicacoes Ltda), Romanian translation, Ukrainian translationShame and Attachment Loss: The Practical Work of Reparative Therapy(InterVarsity Press, 2009))Published Book Chapters:Nicolosi, Joseph (1993) Psychotherapy Can Change Sexual Orientation,� in Homosexuality: Opposing Viewpoints. D. Bender and B. Leone, Eds., San Diego, CA.: Greenhaven Press, pp.126-132.Nicolosi, Joseph, (1994). What Does Science Teach About Homosexuality?� in Caught in the Crossfire: Helping Christians Debate Homosexuality, S. Geis and D. Messer, Eds., Nashville, TN: Abingdon Press, pp. 67-77.Nicolosi, Joseph (1999) The Gay Deception,� in Homosexuality and American Public Life, edited by Christopher Wolfe. Dallas, TX: Spence.Peer-Reviewed Journal Articles:Nicolosi, Joseph, (1993). Treatment of the Non-Gay Homosexual Man,� The Journal of Pastoral Counseling, Vol. XXVIII, p. 76-82.Nicolosi, J., Byrd, A. Dean, Potts, R.W. (June 2000). Retrospective Self-Reports of Changes in Homosexual Orientation, A Consumer Survey of Conversion Therapy Clients,� Psychological Reports, 86: 1071-1088.Nicolosi, Joseph, Byrd, D., Potts, R.W. (April 2000) Beliefs and Practices of Therapists Who Practice Sexual Reorientation Psychotherapy,� Psychological Reports 86, 689-702.Nicolosi, Joseph (2001) A Developmental Model for Effective Treatment of Male Homosexuality: Implications for Pastoral Counseling,� American J. of Pastoral Counseling, vol. 3, no.3/4, pp. 87-99.Nicolosi, Joseph, Finally, Recognition of a Long-Neglected Population,� Archives of Sexual Behavior, October 2003, vol. 32, no, 5, pp. 445-447.Nicolosi, Joseph, (2001) The Removal of Homosexuality from the Psychiatric Manual,� The Catholic Social Science Review, Volume VI, p. 71-77.Nicolosi, Joseph, Byrd, D., Potts, R.W. (June, 2002). A Critique of Bems Exotic Becomes Erotic� Theory of Sexual Orientation Development,� Psychological Reports 90: 931-946.Nicolosi, Joseph, Byrd, D., Potts, R.W. (June, 2002). A Meta-Analytic Review of Treatment of Homosexuality,� Psychological Reports 90: 1139-1152.A.D. Byrd, Joseph Nicolosi, and R.W. Potts (February 2008), Clients Perceptions of How Reorientation Therapy and Self-Help Can Promote Changes in Sexual Orientation,� Psychological Reports 102, pp. 3-28.International Training Seminars for Therapists Given by Joseph Nicolosi:1)John Paul II Institute for Marriage and The Family, The Vatican, Rome, Italy, Sept.2008 2) Reichelsheim, Germany in 19983) Reichelsheim, Germany in 20034) Milan, Italy in Sept. 20045)Berlin, Germany, in Sept. 20066) London, England, in May 20077) Mexico City, Mexico, May 20088) Frankfurt, Germany, June 2008
  • Credentials, Training, Qualifications:
  • PhD Clinical
  • What licenses do you currently hold?:
  • Clinical psychology
  • Are you in private practice?:
  • Yes
  • Are you available to provide supervision services?:
  • Yes
  • Do you participate in any insurance plans?:
  • No
  • Telephone/Video counseling:
  • In certain circumstances
  • Please list all languages that you speak:
  • English
  • I treat the following:
  • Individuals, Married Couples, Children, Adolescents, Families, Adult Children of Alcoholics, Sexual Abuse Victims, Depressive Disorders, Anxiety Disorders, Obsessive Compulsive Disorder/Scrupulosity, Reactive Attachment Disorder
  • I use the following methods:
  • Other
  • Please describe other treatment methods
  • I use a psychodynamic approach.
  • Catholic Commitment


    Artificial Contraception:

    "For just reasons spouses may wish to space the birth of their children."… "Periodic continence that is the methods of birth regulation based on self-observation and the use of infertile periods is in conformity with the objective criteria of morality."… " 'every action which whether in anticipation of the conjugal act or in its accomplishment or in the development of its natural consequences proposes whether as an end or as a means to render procreation impossible is intrinsically evil'." (Catechism 2368 2370) Please indicate if you agree or disagree.

  • Do you agree or disagree?
  • Agree
  • Living Together/Cohabitation:

    In a so-called free union a man and a woman refuse to give juridical and public form to a liaison involving sexual intimacy. The expression "free union" is fallacious: what can "union" mean when the partners make no commitment to one another each exhibiting a lack of trust in the other in himself or in the future? The expression covers a number of different situations: concubinage rejection of marriage as such or inability to make long-term commitments. All these situations offend against the dignity of marriage; they destroy the very idea of the family; they weaken the sense of fidelity. They are contrary to the moral law. The sexual act must take place exclusively within marriage. Outside of marriage it always constitutes a grave sin and excludes one from sacramental communion. Some today claim a "right to trial marriage" where there is an intention of getting married later. However firm the purpose of those who engage in premature sexual relations may be "the fact is that such liaisons can scarcely ensure mutual sincerity and fidelity in a relationship between a man and a woman nor especially can they protect it from inconstancy of desires or whim." Carnal union is morally legitimate only when a definitive community of life between a man and a woman has been established. Human love does not tolerate "trial marriages." It demands a total and definitive gift of persons to one another." (Catechism 2390 2391)

  • Do you agree or disagree?
  • Agree
  • Infertility:

    "Techniques that entail the dissociation of husband and wife by the intrusion of a person other than the couple (donation of sperm or ovum surrogate uterus) are gravely immoral. … Techniques involving only the married couple (homologous artificial insemination and fertilization) are perhaps less reprehensible yet remain morally unacceptable. They dissociate the sexual act from the procreative act. The act which brings the child into existence is no longer an act by which two persons give themselves to one another but one that 'entrust the life and identity of the embryo into the power of doctors and biologists and establishes the domination of technology over the origin and destiny of the human person. Such a relationship of domination is in itself contrary to the dignity and equality that must be common to parents and children'. … Only respect for the link between the meanings of the conjugal act and respect for the unity of the human being make possible procreation in conformity with the dignity of the person." (Catechism 2376 2377)

  • Do you agree or disagree?
  • Agree
  • Abortion:

    "From its conception the child has the right to life. Direct abortion that is abortion willed as an end or as a means is a "criminal" practice gravely contrary to the moral law. … Because it should be treated as a person from conception the embryo must be defended in its integrity cared for and healed like every other human being. (Catechism 2322 2324)

  • Do you agree or disagree?:
  • Agree
  • Divorce and Marriage:

    The church recognizes a validly contracted sacramental marriage as indissoluble. In therapeutic practice we are to presume the validity of a sacramental marriage "unless after examination of the situation by the competent ecclesiastical tribunal [the marriage is declared null i.e. that the marriage never existed in which case ] the contracting parties are free to [re]marry provided the natural obligations of a previous union are discharged." (Catechism 1629) "The separation of spouses while maintaining the marriage bond can be legitimate in certain cases provided for by canon law." (Catechism 1649) "The remarriage of persons divorced from a living lawful spouse contravenes the plan and law of God as taught by Christ. They are not separated from the Church but they cannot receive Eucharistic communion." (Catechism 1665)

  • Do you agree or disagree? :
  • Agree
  • Euthanasia:

    "Intentional euthanasia whatever its forms or motives is murder. It is gravely contrary to the dignity of the human person and to the respect due to the living God his Creator." (Catechism 2324)

  • Do you agree or disagree? :
  • Agree
  • Homosexuality:

    "Basing itself on Sacred Scripture which presents homosexual acts as acts of grave depravity tradition has always declared that 'homosexual acts are intrinsically disordered.' They are contrary to the natural law. They close the sexual act to the gift of life. They do not proceed from a genuine affective and sexual complementarily. Under no circumstances can they be approved. The number of men and women who have deep-seated homosexual tendencies is not negligible. They do not choose their homosexual condition; for most of them it is a trial. They must be accepted with respect compassion and sensitivity. Every sign of unjust discrimination in their regard should be avoided. Homosexual persons are called to chastity. By the virtues of self-mastery that teach them inner freedom at times by the support of disinterested friendship by prayer and sacramental grace they can and should gradually and resolutely approach Christian perfection." (Catechism 2357 2358 2359)

  • Do you agree or disagree?:
  • Agree
  • New Age Practice and Spirituality:

    New Age involves a fundamental belief in the perfectibility of the human person by means of a wide variety of techniques and therapies (as opposed to the Christian view of cooperation with divine grace). (

    It is difficult to separate the individual elements of New Age religiosity – innocent though they may appear – from the overarching framework which permeates the whole thought-world on the New Age movement. The gnostic nature of this movement calls us to judge it in its entirety. From the point of view of Christian faith it is not possible to isolate some elements of New Age religiosity as acceptable to Christians while rejecting others.

    The New Age concept of God is rather diffuse whereas the Christian concept is a very clear one. The New Age god is an impersonal energy really a particular extension or component of the cosmos; god in this sense is the life force or soul of the world. … Even when “God” is something outside myself it is there to be manipulated.

    This is very different from the Christian understanding of God as the maker of heaven and earth and the source of all personal life… God is not identified with the Life-principle understood as the “Spirit” or “basic energy” of the cosmos but is that love which is absolutely different from the world and yet creatively present in everything and leading human beings to salvation. (Excerpted from “Jesus Christ the Bearer of the Water of Life: A Christian reflection on the “New Age”. (Pontifical Council for Interreligious Dialogue)).

    Common New Age practices include the use of enneagrams labyrinths reiki healing yoga transcendental meditation healing by crystals psychic healing reflexolgoy tarot cards palm reading recourse to mediums and psychics fortune telling and contacting the dead. There are many other practices and techniques that go by various names that are variations of these basic practices and are similarly at odds with Christian faith and are therefore to be rejected.

  • Do you agree or disagree?:
  • Agree
  • How often do you attend Mass?
  • Occasionally
  • Are You A Practicing Catholic?
  • Yes

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