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The Equity Perception Scale - Intellectual Disability Services (EPS-IDS): evaluating the reliability and validity of a new measure

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<mark>Journal publication date</mark>12/2013
<mark>Journal</mark>Journal of Intellectual and Developmental Disability
Issue number4
Volume38
Number of pages9
Pages (from-to)292-300
Publication StatusPublished
<mark>Original language</mark>English

Abstract

Background The aim of this paper was to evaluate the reliability and validity of the Equity Perception Scale - Intellectual Disability Services (EPS-IDS), a detailed measure of staff equity perceptions in services for people with intellectual disability (ID). The EPS-IDS contains 3 relationship indices that assess staff relationships with their employing organisation, their co-workers, and service users.

Method Postal questionnaires were used to collect quantitative data from a purposive sample of ID service staff.

Results The EPS-IDS was found to have good internal consistency reliability. The overall test-retest reliability of the measure, however, was found to be less satisfactory. With the exception of the co-worker relationship index, the EPS-IDS indices were found to have promising validity.

Conclusions The findings from the study suggest that the EPS-IDS shows some promise as a measure of the equity perceptions of ID service staff. Further refinements to the relationship indices, however, may be required.