This handbook contains suggested guidelines for planning and implementing an occupational assessment program and an overview of fifty-one occupational assessment instruments. The guidelines cover these topics: instrument selection and use, administration, scoring, and interpretation. Each of these reviews of occupational interest and ability assessment instruments contain the following information in a one-page format: reference number, title, copyright, vendor, type/use of instrument, target populations, instrument format, scoring, interpretive format, reading level, administrative time, and space for notes. For quick reference, a chart identifying the major factors of the reviews--type, target population, scoring, reading level, and administrative time--and a list of the vendors are included at the back of the document. (YLB)