ERIC Number: EJ851104
Record Type: Journal
Publication Date: 2009-Sep
Abstractor: As Provided
Reference Count: 19
A Validity Study of the Working Group's Orientation Test for Individuals with Moderate to Severe Intellectual Disability
Pyo, G.; Curtis, K.; Curtis, R.; Markwell, S.
Journal of Intellectual Disability Research, v53 n9 p780-786 Sep 2009
Background: Decline in orientation skill has been reported as an early indicator of Dementia of Alzheimer's Type (DAT). Orientation subtest of the Working Group's Test Battery was examined whether this test is useful to identify DAT patients among adults with moderate to severe ID. Methods: Sixteen DAT patients and 35 non-demented normal controls with moderate to severe ID were followed for a year using Orientation Test. The scores on the baseline evaluation and the longitudinal changes over a 1-year period among the DAT patients and the normal controls were compared. The effects of age and etiologies of ID on the performance of Orientation were also examined. Results: The DAT group's score was significantly poorer than that of the normal control group on the baseline evaluation. The score changes over the 1-year period were not significantly different between the groups. However, there was a considerable overlap between the score distributions of the two groups. The effects of age and etiologies of ID on the performance of Orientation were not significant. Conclusions: Screening DAT patients based only on the score of the Orientation Test of the Working Group's Test Battery may produce a large number of diagnostic errors.
Descriptors: Mental Retardation, Dementia, Severe Disabilities, Test Validity, Cognitive Ability, Disability Identification, Comparative Analysis, Scores, Longitudinal Studies, Age Differences, Etiology, Screening Tests, Neurological Impairments, Orientation
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Publication Type: Journal Articles; Reports - Research
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