Increasing the Reliability of Self-Report by Adults with Moderate Mental Retardation

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Abstract
Reliable self-reporting by individuals with mental retardation is especially important as the field moves to promote consumer participation in decision making and program evaluation. The Sheltered Care Environmental Scale (SCES) was chosen as a basis for constructing a picture-prompted questionnaire assessing three dimensions of the SCES: Conflict, Cohesion, and Independence. A test-retest design was used to compare picture-prompted administration with reliance exclusively on verbal questioning. Data indicate that the use of pictures enhances the test-retest reliability of the instrument.