and Bisexual Clients" provide psychologists with (a) a frame of reference for the treatment of lesbian, gay, and bisexual clients 1 and (b) basic information and further references in the areas of assessment, intervention, identity, relationships, diversity, education, training, and research. These practice guidelines are built upon the "Guidelines for Psychotherapy With Lesbian, Gay, and Bisexual Clients" (Division 44/Committee on Lesbian, Gay, and Bisexual Concerns Joint Task Force on Guidelines for Psychotherapy with Lesbian, Gay, and Bisexual Clients, 2000) and are consistent with the American Psychological Association (APA) "Criteria for Practice Guideline Development and Evaluation" (APA, 2002a). They assist psychologists in the conduct of lesbian, gay, and bisexual affirmative practice, education, and research. The term guidelines refers to pronouncements, statements, or declarations that suggest or recommend specific professional behavior, endeavors, or conduct for psychologists. Guidelines differ from standards in that standards are mandatory and may be accompanied by an enforcement mechanism. Thus, these guidelines are aspirational in intent. They are intended to facilitate the continued systematic development of the profession and to help ensure a high level of professional practice by psychologists. These guidelines are not intended to be mandatory or exhaustive and may not be applicable to every clinical situation. They should not be construed as definitive and are not intended to take precedence over the judgment of psychologists. Practice guidelines essentially involve recommendations to professionals regarding their conduct and the issues to be considered in particular areas of psychological practice. Practice guidelines are consistent with current APA policy. It is also important to note that practice guidelines are superseded by federal and state law and must be consistent with the current APA "Ethical Principles of Psychologists and Code of Conduct" (APA, 2002b). 2 This article was published Online First August 29, 2011. These guidelines were adopted by the APA Council of Representatives, February 18-20, 2011, and replace the original "Guidelines for Psychotherapy With Lesbian, Gay, and Bisexual Clients," which were adopted February 26, 2000, and expired at the end of 2010. These revised and updated guidelines were developed by the Division 44/Committee on Lesbian, Gay, Bisexual, and Transgender Concerns Guidelines Revision Task Force. The task force included Kristin Hancock (chair) and members