This text confronts the many dilemmas facing investigators who do research on children and adolescents, and provides practical guidelines on solving them. Amongst the topics given detailed consideration are the kinds of research to which young people feel particularly vulnerable, right to privacy, how ethical guidelines - usually designed for research with adults - apply to work with minors, in what circumstances parental consent is not the right mechanism for protecting children's rights and the explanation of a research project to a young person.