This book focuses on non-functional phonologies (NFP): that is, phonological disorders withno known physiological or neurological causes. It is a substantial book, well written and carefullyresearched, with an applied and pedagogical orientation that will make it invaluable for cliniciansand students in speech pathology and child phonology. It is an ambitious and original work; itspractical guidance for those assessing child phonology is based on a comprehensive andup-to-date descriptive and theoretical review of phonological systems and their realization inchildren's speech. It consists of six chapters, each of which introduces general concepts ofphonology as well as modern concepts of nonlinear phonology and includes practical material,most notably a set of original worksheets that are geared to assessment or other types ofintervention. It also has three appendices: the first reviews commercial tests, the second providesexamples of stress patterns in English lexical items, and the third presents conventions of theInternational Phonetic Alphabet.