The author deals with limitations on the use of work samples as predictors of vocational success of the disabled. The predictive model is briefly reviewed and ways in which the assumptions underlying this model can be violated or altered in vocational evaluation settings are described. (Author)

Included in the review are work samples; the Jewish Employment and Vocational Service Evaluation System; the Singer Evaluation System; the Testing, Orientation, and Work Evaluation in Rehabilitation System; and the Systematic Approach to Vocational Evaluation System. (Author)

This manual reviews the use of work samples in the vocational assessment of blind and visually impaired persons and suggests improvements in their use. The information in the manual was gathered through a literature review, a national survey of vocational evaluators in rehabilitation facilities and schools for the blind, and ideas developed by the…

Concerns expressed regarding the use of work sample systems for assessing handicapped students include: limitations of trait assessment; criteria and standards; application of work sample results; need to measure learning outcomes; and limited focus. Recommendations include use of competency analysis, selection criteria, and commercial and locally…