Comparing the long and short forms of the student version of the Jenkins Activity Survey

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Abstract
The 44-item (long-form) student Jenkins Activity Survey (SJAS), used in locating subjects on the Type A/B continuum, requires an average of 8 min more to complete than the short form (containing only the 21 scored items). This study was conducted to determine whether the long and short forms provide comparable score distributions and factor structures for independent random samples of undergraduates (N=1248). Analyses revealed that the short form provides factors that are more independent than those of the long form, provides comparable factor structures for A's and B's, and provides comparable distributions of SJAS scores.