Inter-rater reliability of the Hayes Ability Screening Index in a sample of Australian prisoners

Background Reliable ascertainment of intellectual disability (ID) is important to identify those with special needs, in order for those needs to be met in the criminal justice system. Although the Hayes Ability Screening Index (HASI) is valid and widely used for the identification of possible ID, th...

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Bibliographic Details
Published in:Journal of intellectual disability research 2015-11, Vol.59 (11), p.1055-1060
Main Authors: Young, J. T., van Dooren, K., Lennox, N. G., Butler, T. G., Kinner, S. A.
Format: Article
Language:English
Subjects:
Adolescent
Adult
Agreements
Bias
Correlation
Correlation coefficients
Criminal justice
Criminal justice system
Disability
Female
Humans
Identification
Indigenous peoples
Intellectual disabilities
intellectual disability
Intellectual Disability - diagnosis
Intellectual Disability - epidemiology
Interrater Reliability
Learning disabilities
Male
Medical screening
Prisoners
Prisoners - statistics & numerical data
Psychiatric Status Rating Scales - standards
Psychometrics - instrumentation
Reliability
Reproducibility of Results
Scoring
scoring methods
screening
Screening Tests
Special Needs Students
Western Australia - epidemiology
Young Adult
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Summary:Background Reliable ascertainment of intellectual disability (ID) is important to identify those with special needs, in order for those needs to be met in the criminal justice system. Although the Hayes Ability Screening Index (HASI) is valid and widely used for the identification of possible ID, the risk of inter‐rater bias between researchers when scoring the HASI has not yet been established. The current paper estimates the inter‐rater reliability of the HASI in a sample of Indigenous and non‐Indigenous prisoners in Western Australia. Methods We estimated intra‐class correlation coefficients (ICC) for the consistency of agreement among three blinded raters using a two‐way random‐effects model assessing the inter‐rater agreement of the HASI. Kappa was also estimated for the dichotomous HASI screening threshold outcome between the raters. Results The HASI exhibited very good within‐subject consistency of agreement for Section B (ICC = 0.95; 95%CI:0.94–0.96), Section C (ICC = 0.97; 95%CI: 0.96–0.98) and Section D (ICC = 0.90; 95%CI: 0.87–0.92) subscales and for the total scaled score (ICC = 0.97; 95%CI: 0.96–0.98). The inter‐rater reliability of the dichotomous adult ID screening threshold (
ISSN:0964-2633
1365-2788
DOI:10.1111/jir.12198