This manual presents an interview for detecting 20 childhood psychiatric disorders in children aged six to 18. The authors aim to develop an interview for diagnoising frequently-encountered behavioural problems. It should be useful in screening for disorders such as: attention deficit and hyperactivity; substance abuse; specific phobia; social phobia; acute stress; post-traumatic stress; bulimia; depression; dysthymia; hypomania; enuresis; and schizophrenia. The manual includes background about the interview's development; a training section providing specifications for preparing mental health paraprofessionals to administer it; questions written for a child's level that screen for 20 disorders; and a section devoted to scoring and analyzing results.