Content validity involves a judgment that all knowledges, skills, abilities, and other worker characteristics (KSAOs) needed for successful job performance (or a specified portion, the job content domain), have been adequately sampled by the tests used for employee selection and promotion decision making. The model outlines the procedure for…

A criterion-referenced instrument, Inventory of Cognitive Skills and Visual-Motor Functioning, was devised to evaluate a prekindergarten program for economically disadvantaged 4-year-olds. The Inventory, administered to each child at the beginning and end of the preschool experience, provided specific information in: (1) knowledge of body parts,…