Contents: R.E. Asher, Foreword. J. Laver, List of Publications. B. Hardcastle, J.M. Beck, Introduction. Part I:Instrumental Evidence for Phonetic Theory.P. Ladefoged, Speculations on the Control of Speech. J.J. Ohala, Phonetic Explanations for Sound Patterns: Implications for Grammars of Competence. W. Hardcastle, F. Gibbon, Electropalatography as a Research and Clinical Tool: 30 Years on. Part II:Cognitive Aspects of Phonetic Processing.A. Cutler, M. Broersma, Phonetic Precision in Listening. H. Fraser, Representing Speech in Practice and Theory. P.F. MacNeilage, B.L. Davis, A Cognitive-Motor Syllable Frame for Speech Production: Evidence From Neuropathology. Part III:Phonetics in Social Interaction.R.E. Asher, E.L. Keane, Diphthongs in Colloquial Tamil. G.J. Docherty, P. Foulkes, Glottal Variants of /t/ in the Tyneside Variety of English. J. Fletcher, Exploring the Phonetics of Spoken Narratives in Australian Indigenous Languages. J. Harrington, S. Palethorpe, C. Watson, Deepening or Lessening the Divide Between Diphthongs: An Analysis of the Queen's Annual Christmas Broadcasts. J. Local, On the Interactional and Phonetic Design of Collaborative Completions. Part IV:Voice Quality.J.M. Beck, Perceptual Analysis of Voice Quality: The Place of Vocal Profile Analysis. A.N. Chasaide, C. Gobl, On the Relationship Between Phonatory Quality and Affect. J.H. Esling, J.G. Harris, States of the Glottis: An Articulatory Phonetic Model Based on Laryngoscopic Observations. F. Nolan, Forensic Speaker Identification and the Phonetic Description of Voice Quality.