2002 11-2 The Validity and Reliability of Adult Career Service Inventory: A Cross-Validation Study

Kai-Cheng Han
 

National Taichung Teachers College



An inventory to measure adult students sense of career service needs, Adult Career Service Inventory (ACSI), is presented in this article. It is 60-item scale consisting of the following ten subscale: (a)Self-Understanding, (b)Skills to Mantain Effective Behavior, (c)Developmental Changes and Transitions, (d)Education, Leaming and Training, (e)Career Informations, (f)Occupational Exploration, (g) Environmental Exploration, (h)Career Planning, (i)Career Decisions, and (j)Leisure Life. The purpose ofthe first study were to conceptualize the notion of adult career service and to construct an Adult Career Service Inventory. The purpose of the second study was to provide empirical evidence for the validity and reliability of scores on a scale derived from the results of the first study. The samples comprised a pilot samples of 306 adult students, and the main samples of 1109 and 360 students.

Descriptive statistics, including means, variances, and item-total correlations, were computed for each item. The number of factors and factor structure were based on oblique factor analysis of the pilot sample responses, followed by cross-validation on the two main sample to refine the scale structures. Internal consistency of the scores on ACSI and its subscales was estimated by Cronbach’s coefficient alpha, and stability coefficient was based on retested. Then reliability estimates achieved in crossvalidation for the ten subscales. The application of Adult Career Service lnventory and the suggestions of the future study were discussed. An appendix contains the ACSI instrument.

Keywords
adult career, career guidance/service needs, career assessment, cross-validation, nontraditional colloge students, test construc-tion, test validity

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