Scobbie, James M.2018-06-292018-06-292005-09Scobbie, J. (2005) The phonetics phonology overlap, QMU Speech Science Research Centre Working Papers, WP-1.https://eresearch.qmu.ac.uk/handle/20.500.12289/138This is a draft of chapter entitled Interface and Overlap in Phonetics and Phonology submitted to Charles Reiss & Gillian Ranchand (eds) The Book of Interfaces. Now published in Oxford Handbook of Linguistic Interfaces. Oxford: Oxford University Press, 17-52. This series consists of unpublished working- papers. They are not final versions and may be superseded by publication in journal or book form, which should be cited in preference. All rights remain with the author(s) at this stage, and circulation of a work in progress in this series does not prejudice its later publication. Comments to authors are welcome. Now published in Oxford Handbook of Linguistic Interfaces. Oxford: Oxford University Press, 17-52.The concept of an interface in linguistics implies a connection between two distinct theoretical domains, each concerned with a distinct group of linguistic phenomena. If the domains or phenomena are very different, the purpose and nature of an interface in the theory is to state (explicitly and without redundancy) any necessary connections between what would otherwise be independent aspects of the grammar. On the other hand, if the domains or phenomena have numerous similarities, the interface is additionally characterised by theoretical competition between descriptions of and explanations for particular phenomena. In this situation, linguistic data are thought to be capable of providing evidence for particular theories of modular demarcation.article