Each of the four issues of this newsletter published in 1993 consists of one article dealing with a particular policy debate. Number 1, "Canadian Special Education Policies: Children with Learning Disabilities in a Bilingual and Multicultural Society" (Linda S. Siegel and Judith Wiener), discusses social and cultural factors affecting the education of children with learning disabilities, including policy issues, and bilingualism and multiculturalism. This issue contains 34 references. Number 2, "Using Research and Theory To Justify and Inform Head Start Expansion" (Edward Zigler and Sally J. Styfco), examines Head Start's programs and goals, and addresses issues surrounding the evaluation of Head Start, policy directions (including issues of quantity and quality), and planning for a better, bigger Head Start program. This issue contains 87 references. Number 3, "Child Witnesses: Translating Research into Policy" (Stephen J. Ceci and Maggie Bruck), begins with a discussion of the McMartin preschool (Manhattan Beach, California) child sexual abuse case, and moves on to a discussion of the prevalence of abuse and court involvement. Research on children's suggestibility, including past and present trends, are discussed as are other issues, including policy implications for expert witnesses, the relationship of research to clinical practice, and professional organizations as ethical gatekeepers. This issue contains 97 references. Number 4, "Integrating Science and Ethics in Research with High-Risk Children and Youth (Celia B. Fisher), deals with federal and professional guidelines for research with children and youth, and such issues as informed consent, problems identified during the course of research, generalization of research results to individuals and diverse populations, and recommendations for future policy. This issue contains 102 references. (DR)