The Expanded Skills Confidence Inventory: Measuring basic dimensions of vocational activity

This series of studies describes the development and psychometric evaluation of 17 scales measuring confidence or self-efficacy with respect to basic domains of vocational activity. The confidence scales assessed previously measured interest dimensions such as Writing, Mechanical Activities, and Public Speaking, but also included dimensions reflective of recent changes in the nature of work or the culture of the workplace, for example, Using Technology, Creative Production, and Cultural Sensitivity. The scales were internally consistent, showed predictable patterns of gender differences and similarities, and were in generally most highly related to the predicted Holland confidence theme. Discriminant analyses of scores across the eight largest occupational groups represented indicated large improvements over chance, or a priori probabilities, in the prediction of occupational group membership. Further research on and use of these 17 new scales in joint interpretations of parallel measures of interest and confidence are discussed.