IDLaS-DE – A Web-Based Platform for Running Customized Studies on Individual Differences in German Language Skills

Sandra Bethke; Janay Monen; Thijs Rinsma; Paul Trilsbeek; Antje S. Meyer; Florian Hintz

doi:10.5334/joc.468

IDLaS-DE – A Web-Based Platform for Running Customized Studies on Individual Differences in German Language Skills

Journal of Cognition

Volume 8 (2025): Issue 1

By: Sandra Bethke , Janay Monen, Thijs Rinsma, Paul Trilsbeek , Antje S. Meyer and Florian Hintz

Open Access

|Nov 2025

Abstract

Individuals vary substantially in their language skills. The Individual Differences in Language Skills Test Battery (IDLaS) is a tool to assess variability in (1) linguistic experience, (2) general cognitive skills implicated in language, including nonverbal processing speed, working memory, and nonverbal reasoning, and (3) linguistic processing skills, including word- and sentence-level production and comprehension. The test battery was initially developed for Dutch language users. Building on this work, we recently developed a German version (IDLaS-DE). IDLaS-DE consists of 30 behavioral tests that have been validated in a large group of German speakers, aged between 18 and 30 years. In addition, we have developed a web platform that researchers interested in assessing language and general cognitive skills can use for their research purposes. Here, we provide a guide for creating and running customized studies online via this platform. The IDLaS-DE web platform and all its services are free of charge and accessible at https://www.mpi.nl/idlas-de.

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Articles in this issue

DOI: https://doi.org/10.5334/joc.468 | Journal eISSN: 2514-4820

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Language: English

Submitted on: Mar 28, 2025

Accepted on: Oct 4, 2025

Published on: Nov 10, 2025

Published by: Ubiquity Press

In partnership with: Paradigm Publishing Services

Publication frequency: 1 issue per year

Keywords:

individual differences,

language skills,

online testing,

test battery

© 2025 Sandra Bethke, Janay Monen, Thijs Rinsma, Paul Trilsbeek, Antje S. Meyer, Florian Hintz, published by Ubiquity Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 8 (2025): Issue 1