This article introduces a special section devoted to the issue of recruiting and retaining ethnic minorities in psychotherapy research. Although minorities make up approximately 27% of the population of the United States (U.S. Bureau of the Census, 1994), the major psychotherapy studies conducted to date have been based almost exclusively on White populations. In March 1994, however, a new policy of the National Institutes of Health (NIH) mandated that women and members of ethnic minority groups be included in all NIH-funded projects involving human participants, unless a clear and compelling rationale justifies their exclusion. Knowledge about effective and culturally sensitive means of contacting, recruiting, and retaining minorities is an important resource for researchers who now wish to conduct NIH-funded studies. In the series of articles constituting this special section, strategies and advice are provided for researchers who want to recruit and retain minorities in psychotherapy research.