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Data Validation01:03

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Data validation is an essential part of a comprehensive assessment. Validation is confirming or verifying and opening the door to gathering more assessment data as it clarifies vague or unclear data. The process of checking and verifying the collected information is called data validation. The primary purpose of data validation is to ensure data is as free from error, bias, and misinterpretation as possible.
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Updated: Apr 25, 2026

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Validating GULS: An open-access Dutch language proficiency test.

Mona Bassleer1, Stijn Schelfhout2,3, Lot Fonteyne4

  • 1Department of Experimental Psychology, Ghent University, Henri Dunantlaan 2, 9000, Ghent, Belgium. mona.bassleer@ugent.be.

Behavior Research Methods
|April 23, 2026
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Summary
This summary is machine-generated.

The Ghent University Language Screening (GULS) is a new, free tool to assess Dutch academic language proficiency in higher education. It reliably predicts first-year academic success for students needing language support.

Keywords:
Academic achievementHigher educationPost-entry language assessmentValidation

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Area of Science:

  • Educational Assessment
  • Higher Education Language Proficiency
  • Academic Achievement Prediction

Background:

  • Academic language proficiency is crucial for student success in higher education.
  • Post-entry language assessments (PELAs) identify students needing language support, especially in systems with open admission.
  • Limited availability and accessibility of PELAs for Dutch hinder support for non-native speakers.

Purpose of the Study:

  • To introduce and validate the Ghent University Language Screening (GULS), a free, accessible Dutch PELA for higher education.
  • To assess the construct validity, reliability, and predictive validity of GULS for first-year academic achievement.

Main Methods:

  • Construct validity and reliability of GULS were confirmed using data from 12,527 students (2017-2020) and 17,204 students (2020-2023).
  • Predictive validity was examined for academic achievement (GPA, study success) across 16 bachelor programs using data from 8,244 (2017-2020) and 10,891 students (2020-2023).

Main Results:

  • GULS demonstrated strong construct validity and reliability across two 3-year periods.
  • GULS significantly predicted first-year academic achievement (GPA and study success) at both program and study program levels.
  • The screening tool is effective for identifying students who may benefit from Dutch language support.

Conclusions:

  • The Ghent University Language Screening (GULS) is a valid and reliable tool for assessing Dutch language proficiency in higher education.
  • GULS effectively predicts first-year academic success, supporting equitable educational opportunities.
  • Its public accessibility makes GULS a valuable resource for educational research and practice.