This special issue presents articles addressing current child psychotherapy outcome research. The papers reevaluate the methodological quality of previous studies, suggest coping strategies for researchers in this difficult area, and describe important new directions including long-term follow-up. They also detail methodological issues in using the major methods of measurement -- structured interview, behavioral observation, and rating scales -- and in using qualitative analysis. The role of ethnicity in relation to child clinical research -- specifically subject selection, design, and measurement -- is also explored. The issue concludes with thoughts about writing and editing child psychology research.