Peter De Jong, Ph.D., is a professor of social work at Calvin College in Grand Rapids, Michigan. He has been an outpatient therapist, case worker, and led trainings and consultations with mental health clinics, family service agencies, juvenile corrections programs, and schools. In addition to co-authoring (with Insoo Kim Berg) two earlier editions of INTERVIEWING FOR SOLUTIONS, he has written several articles and book chapters on solution-focused therapy. Peter continues to develop new practice tools and therapy and training manuals, and to conduct research on practice and how new practitioners acquire a solution-focused outlook and skills. Insoo Kim Berg, M.S.S.W. is a co-developer of the solution-focused approach and is the director of the Brief Family Therapy Center, Milwaukee, Wisconsin. Many of her 10 books and over 35 papers have been translated into 14 languages. Among her books are FAMILY BASED SERVICES, WORKING WITH THE PROBLEM DRINKER (co-author Scott D. Miller), BUILDING SOLUTIONS IN CHILD PROTECTIVE SERVICES (co-author Susan Kelly), and CHILDREN'S SOLUTION WORK (co-author Therese Steiner). Insoo lectures across North America, Europe, Scandinavia, and Pacific Rim countries and consults with organizations and various government agencies.