This volume consists of 38 papers presented at the summer 2000 meeting of the International Clinical Phonetics and Linguistics Association, hosted by Queen Margaret University College, Edinburgh. The scope of the collection is ambitious in many respects. All levels of linguistic analysis are covered, from pragmatics through to acoustics, although approximately two thirds of the papers deal with phonology and phonetics. The full range of ages is represented, from a paper by John Locke on the functions of infant babbling through to Jacqueline Guendozi and Nicole Muller's paper on repair strategies in the conversation of an elderly subject with Alzheimer disease. The majority of the papers consider developmental and acquired disorders, although a few consider normal and bilingual language development. Although English is the most frequently studied language, data from Arabic, Greek, Korean, Portugese, Putonghua, Swedish, and several other languages are also featured. The editors are justly proud of the international feel to the research, with contributors working on five continents.