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Development and Validation of a Modified Multiple Errands Test for Adults with Intellectual Disabilities

Steverson, T, Adlam, A.L.R, Langdon, Peter E. (2016) Development and Validation of a Modified Multiple Errands Test for Adults with Intellectual Disabilities. Journal of Applied Research in Intellectual Disabilities, 30 . pp. 255-268. ISSN 1360-2322. E-ISSN 1468-3148. (doi:10.1111/jar.12236) (KAR id:52465)

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Background: The aims of the current study were to adapt a version of the MET for people with intellectual disabilities (IDs) and assess its ecological and construct validity. Material and Methods: Using a correlational design, 40 participants with IDs were invited to complete a battery of neuropsychological assessments and the modified Multiple Errands Test for Intellectual Disabilities (mMET-IDs). Results: The ability to successfully complete tasks on the mMET-IDs correlated significantly with measures of the Supervisory Attentional System, namely, the Tower of London Test and the Six Parts Test. However, performance on the mMET-IDs and the Six Parts Test could be accounted for by Verbal IQ and receptive vocabulary. The mMET-IDs failed to correlate with the DEX-IR. Conclusions: The mMET-IDs can be successfully used to assess some aspects of the Supervisory Attentional System in people with IDs. Further development is needed, however, to improve the ecological validity of the mMET-IDs.

Item Type: Article
DOI/Identification number: 10.1111/jar.12236
Uncontrolled keywords: Learning Disabilities, Multiple Errands Test, MET-IDs, Executive Function, Neurodevelopmental Disabilities, Dysexecutive Syndrome
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: Divisions > Division for the Study of Law, Society and Social Justice > School of Social Policy, Sociology and Social Research > Tizard
Funders: National Institute for Health Research (
Depositing User: Peter Langdon
Date Deposited: 26 Nov 2015 16:28 UTC
Last Modified: 08 Dec 2022 19:25 UTC
Resource URI: (The current URI for this page, for reference purposes)
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