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KMID : 1001720050150010075
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Journal of Vocational Rehabilitation
2005 Volume.15 No. 1 p.75 ~ p.94
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A study on the development of an employment readiness scale for persons with mental retardation
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Lee Dal-Yob
Kim Jeong-Il
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Abstract
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This study was aimed to develop an employment readiness scale for persons with mental retardation. The sample of this study was composed of 221 persons with mental retardation at rehabilitation centers nationwide, 115 employed persons and 106 unemployed persons.The outcome of this study can be summarized as the following. All items extracted from 7 factors and turned out to be appropriate from the literature review. The internal consistency of all the scale items is high, resulting a Chronbach’s alpha score of .9711. The reliability coefficients of each factor also ranged from .8334 to .9553, indicating that the internal consistency of this scale is appropriate. The inter-rater reliability is .857, and reliabilities for the each factor ranged from .672 to .868. Therefore, this scale showed that the internal consistency and several reliability index are moderate. The difference of the two groups, people who are employed and those not employed, has examined by several t-tests. A series of t-test carried on revealed that disabled workers who are employed showed higher scores in every factor than those who are not employed. Because disabled persons who are employed toward the preparation for jobs are much highly developed in terms of work readiness than those who are not employed, the results were supportive for the construct validity of this scale.Therefore, the result of this study revealed that the validity and reliability coefficients are as being appropriate.
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KEYWORD
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Employment readiness scale, persons with mental retardation, validity, reliability, constructs, factor analysis
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