Reliability and Validity of the Diagnostic Instrument on Adaptive Behaviour: A New Instrument Measuring Adaptive Behaviour in People With Moderate, Severe or Profound Intellectual Disability.

Hinke Elisabet Drijver, Robert Didden, Carlo Schuengel

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Article in Journal of applied research in intellectual disabilities : JARID, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1 citing paper in PubMed.

Reliability and Validity of the Diagnostic Instrument on Adaptive Behaviour: A New Instrument Measuring Adaptive Behaviour in People With Moderate, Severe or Profound Intellectual Disability.Journal of applied research in intellectual disabilities : JARID · 2025
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5 · Who and what money

Authors and funding

3 authors.

Hinke Elisabet DrijverFaculty of Behavioural and Movement Sciences, Section of Clinical Child and Family Studies & Amsterdam Public Health Research Institute, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands.ORCID https://orcid.org/0000-0001-8006-073X

Robert DiddenBehavioural Science Institute, Radboud University, Nijmegen, the Netherlands.ORCID https://orcid.org/0000-0001-5009-4269

Carlo SchuengelFaculty of Behavioural and Movement Sciences, Section of Clinical Child and Family Studies & Amsterdam Public Health Research Institute, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands.ORCID https://orcid.org/0000-0001-5501-3341

Funding

ZonMw 641001103

6 · The paper itself

Abstract

backgroundAssessment of adaptive behaviour of people with moderate to profound intellectual disability is hampered by limited variation in scores within this range. We evaluated measurement properties of the Diagnostic Instrument on Adaptive Behaviour (DIAB), which was developed for this population.

methodThe DIAB was completed by two care staff members for 73 adults (age 19-84) grouped by level of intellectual disability (i.e., moderate, severe or profound intellectual disability) along with Dutch normed measures of adaptive and motor functioning and a global rating.

resultsInter-rater (ICC = 0.94) and test-retest (ICC = 0.96) reliability met standards. DIAB scores correlated highly with those of the two Dutch instruments (r = 0.90; r = 0.77). Associations between measures were consistent with convergent and discriminant validity. DIAB scores differed between three severity levels of ID (p < 0.001).

conclusionThe DIAB exhibited promising reliability, convergent, discriminant, concurrent, and known group validity.

Indexed as

Adaptation, PsychologicalIntellectual DisabilityPsychometricsAdultAgedAged, 80 and overFemaleHumansMaleMiddle AgedReproducibility of ResultsSeverity of Illness IndexYoung Adultadaptive behaviourDIABmoderate intellectual disabilityprofound intellectual disabilitysevere intellectual disability

Identifiers

PMID41237764

DOI10.1111/jar.70150

PMCPMC12618112

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