Refereed journal article or data article (A1)
Phase 2 of CATALISE: a multinational and multidisciplinary Delphi consensus study of problems with language development: Terminology.
List of Authors: Dorothy V.M. 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 H€uneke, 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, CiaraO’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
Publisher: Wiley-Blackwell Publishing Ltd.
Publication year: 2017
Journal: Journal of Child Psychology and Psychiatry
Volume number: 58
Issue number: 10
Start page: 1068
End page: 1080
Number of pages: 13
ISSN: 0021-9630
eISSN: 1469-7610
DOI: http://dx.doi.org/10.1111/jcpp.12721
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/28741289
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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