Construction of a job in general scale: a comparison of global, composite, and specific measures
Article Abstract:
We describe the construction of a Job in General (JIG) scale, a global scale to accompany the facet scales of the Job Descriptive Index. We applied both traditional and item response theory procedures for item analysis to data from three large heterogeneous samples (N = 1,149, 3,566, and 4,490). Alpha was .91 and above for the resulting 18-item scale in successive samples. Convergent and discriminant validity and differential response to treatments were demonstrated. Global scales are contrasted with composite and with facet scales in psychological measurement. We show that global scales are not equivalent to summated facet scales. Both facet and global scales were useful in another organization (N= 648). Some principles are suggested for choosing specific (facet) composite, or global measures for practical and theoretical problems. The correlations between global and facet scales suggest that work may be the most important facet in relation to general job satisfaction. (Reprinted by permission of the publisher.)
Publication Name: Journal of Applied Psychology
Subject: Social sciences
ISSN: 0021-9010
Year: 1989
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A revision of the job diagnostic survey: elimination of a measurement artifact
Article Abstract:
The dimensionality of the original Job Diagnostic Survey (JDS) and a revision were investigated. Factor analyses of two data sets identified six dimensions underlying the original JDS. Five of the factors correspond to the pattern expected for the JDS items; the sixth was identified as a measurement artifact. Five of the JDS items were subsequently rewritten to eliminate the artifact. The revised survey was administered to employees of a printing company (N = 134) and the a priori five-factor solution was obtained with no artifact factor. Scale-factor correlations were also computed. The resulting coefficients suggest that the revised JDS scales are measuring their underlying constructs with reasonable accuracy. As a result of the measurement artifact in the original JDS, it is recommended that the revised JDS should be used in future research concerned with task characteristics. (Reprinted by permission of the publisher.)
Publication Name: Journal of Applied Psychology
Subject: Social sciences
ISSN: 0021-9010
Year: 1987
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