Definition and terminology of developmental language disorders-Interdisciplinary consensus across German-speaking countries

PLoS One. 2023 Nov 9;18(11):e0293736. doi: 10.1371/journal.pone.0293736. eCollection 2023.

Abstract

In recent years, there have been intense international discussions about the definition and terminology of language disorders in childhood, such as those sparked by the publications of the CATALISE consortium. To address this ongoing debate, a Delphi study was conducted in German-speaking countries. This study consisted of three survey waves and involved over 400 experts from relevant disciplines. As a result, a far-reaching consensus was achieved on essential definition criteria and terminology, presented in 23 statements. The German term 'Sprachentwicklungsstörung' was endorsed to refer to children with significant deviations from typical language development that can negatively impact social interactions, educational progress, and/or social participation and do not occur together with a potentially contributing impairment. A significant deviation from typical language development was defined as a child's scores in standardized test procedures being ≥ 1.5 SD below the mean for children of the same age. The results of this Delphi study provide a proposal for a uniform use of terminology for language disorders in childhood in German-speaking countries.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Child
  • Consensus
  • Delphi Technique
  • Humans
  • Language Development
  • Language Development Disorders* / diagnosis
  • Language*

Grants and funding

This research was funded by the Society for Interdisciplinary Language Acquisition Research and Child Language Disorders in the German-Speaking Countries (GISKID) to the whole D-A-CH Konsortium SES (DACH 2020/1-1; www.giskid.eu). We acknowledge support from the Open Access Publication Fund of the University of Muenster and the University Hospital Münster. CL is the first chair of GISKID and was at the same time intensively involved in the planning and execution of the study and together with CK mainly responsible for the composition of the publication.