The adaptive ability performance test (ADAPT): A factor analytic study in clients with intellectual disabilities

Femke Jonker*, Peter de Looff, Sara van Erp, Henk Nijman, Robert Didden

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

Abstract

Background: The adaptive ability performance test (ADAPT) was developed to assess adaptive skills in individuals with intellectual disabilities and borderline intellectual functioning, with or without mental disorders. As a follow-up to earlier research on the ADAPT, a factor analytic study was conducted. Method: One thousand and sixty six ADAPTs from clients with (suspected) intellectual disabilities or borderline intellectual functioning and 129 ADAPTs from participants from the general population were collected along with other characteristics (e.g., IQ, psychiatric classifications, living situation). Results: An exploratory factor analysis (EFA) was performed and resulted in good fit indices. Subsequent confirmatory factor analysis (CFA) and multigroup CFA showed acceptable to good fit indices. This resulted in an instrument with eight factors and 62 items. Conclusion: Factor analytic results suggest that the ADAPT is a valid instrument that measures adaptive skills in individuals with intellectual disabilities or borderline intellectual functioning.

Original languageEnglish
Pages (from-to)3-12
Number of pages10
JournalJournal of Applied Research in Intellectual Disabilities
Volume36
Issue number1
DOIs
Publication statusPublished - Jan 2023

Bibliographical note

Funding Information:
The study was (financially) supported by De Borg and Kwaliteit Forensische Zorg (KFZ). We would also like to thank all employees of facilities and organisations who participated in the data collection.

Publisher Copyright:
© 2022 The Authors. Journal of Applied Research in Intellectual Disabilities published by John Wiley & Sons Ltd.

Funding

The study was (financially) supported by De Borg and Kwaliteit Forensische Zorg (KFZ). We would also like to thank all employees of facilities and organisations who participated in the data collection.

Keywords

  • ADAPT
  • adaptive functioning
  • adaptive skills
  • borderline intellectual functioning
  • factor structure
  • intellectual disability

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