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    Phase 2 of CATALISE: a multinational and multidisciplinary Delphi consensus study of problems with language development: terminology

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    Attribution 4.0 International
    Date Issued
    2017-10-01
    Publisher Version
    10.1111/jcpp.12721
    Author(s)
    Bishop, Dorothy V. M.
    Snowling, Margaret J.
    Thompson, Paul A.
    Greenhalgh, Trisha
    Adams, Catherine
    Archibald, Lisa
    Baird, Gillian
    Bauer, Ann
    Bellair, Jude
    Boyle, Christopher
    Brownlie, Elizabeth
    Carter, Glenn
    Clark, Becky
    Clegg, Judy
    Cohen, Nancy
    Conti-Ramsden, Gina
    Dockrell, Julie
    Dunn, Janet
    Ebbels, Susan
    Gallagher, Aoife
    Gibbs, Simon
    Gore-Langton, Emma
    Grist, Mandy
    Hartshorne, Mary
    Huneke, Alison
    Joanisse, Marc
    Kedge, Sally
    Klee, Thomas
    Krishnan, Saloni
    Lascelles, Linda
    Law, James
    Leonard, Laurence
    Lynham, Stephanie
    Arnold, Elina Mainela
    Mathura, Narad
    McCartney, Elspeth
    McKean, Cristina
    McNeill, Brigid
    Morgan, Angela
    Murphy, Carol-Anne
    Norbury, Courtenay
    O'Hare, Anne
    Cardy, Janis Oram
    O'Toole, Ciara
    Paul, Rhea
    Purdy, Suzanne
    Redmond, Sean
    Restrepo, Laida
    Rice, Mabel
    Slonims, Vicky
    Snow, Pamela
    Speake, Jane
    Spencer, Sarah
    Stringer, Helen
    Tager-Flusberg, Helen
    Tannock, Rosemary
    Taylor, Cate
    Tomblin, Bruce
    Volden, Joanne
    Westerveld, Marleen
    Whitehouse, Andrew
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    Permanent Link
    https://hdl.handle.net/2144/33292
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    Published version
    Citation (published version)
    Dorothy VM Bishop, Margaret J Snowling, Paul A Thompson, Trisha Greenhalgh, Catherine Adams, Lisa Archibald, Gillian Baird, Ann Bauer, Jude Bellair, Christopher Boyle, Elizabeth Brownlie, Glenn Carter, Becky Clark, Judy Clegg, Nancy Cohen, Gina Conti-Ramsden, Julie Dockrell, Janet Dunn, Susan Ebbels, Aoife Gallagher, Simon Gibbs, Emma Gore-Langton, Mandy Grist, Mary Hartshorne, Alison Huneke, Marc Joanisse, Sally Kedge, Thomas Klee, Saloni Krishnan, Linda Lascelles, James Law, Laurence Leonard, Stephanie Lynham, Elina Mainela Arnold, Narad Mathura, Elspeth McCartney, Cristina McKean, Brigid McNeill, Angela Morgan, Carol-Anne Murphy, Courtenay Norbury, Anne O'Hare, Janis Oram Cardy, Ciara O'Toole, Rhea Paul, Suzanne Purdy, Sean Redmond, Laida Restrepo, Mabel Rice, Vicky Slonims, Pamela Snow, Jane Speake, Sarah Spencer, Helen Stringer, Helen Tager-Flusberg, Rosemary Tannock, Cate Taylor, Bruce Tomblin, Joanne Volden, Marleen Westerveld, Andrew Whitehouse. 2017. "Phase 2 of CATALISE: a multinational and multidisciplinary Delphi consensus study of problems with language development: Terminology." JOURNAL OF CHILD PSYCHOLOGY AND PSYCHIATRY, Volume 58, Issue 10, pp. 1068 - 1080 (13). https://doi.org/10.1111/jcpp.12721
    Abstract
    BACKGROUND: Lack of agreement about criteria and terminology for children's language problems affects access to services as well as hindering research and practice. We report the second phase of a study using an online Delphi method to address these issues. In the first phase, we focused on criteria for language disorder. Here we consider terminology. METHODS: The Delphi method is an iterative process in which an initial set of statements is rated by a panel of experts, who then have the opportunity to view anonymised ratings from other panel members. On this basis they can either revise their views or make a case for their position. The statements are then revised based on panel feedback, and again rated by and commented on by the panel. In this study, feedback from a second round was used to prepare a final set of statements in narrative form. The panel included 57 individuals representing a range of professions and nationalities. RESULTS: We achieved at least 78% agreement for 19 of 21 statements within two rounds of ratings. These were collapsed into 12 statements for the final consensus reported here. The term ‘Language Disorder’ is recommended to refer to a profile of difficulties that causes functional impairment in everyday life and is associated with poor prognosis. The term, ‘Developmental Language Disorder’ (DLD) was endorsed for use when the language disorder was not associated with a known biomedical aetiology. It was also agreed that (a) presence of risk factors (neurobiological or environmental) does not preclude a diagnosis of DLD, (b) DLD can co‐occur with other neurodevelopmental disorders (e.g. ADHD) and (c) DLD does not require a mismatch between verbal and nonverbal ability. CONCLUSIONS: This Delphi exercise highlights reasons for disagreements about terminology for language disorders and proposes standard definitions and nomenclature.
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