The purposes of this study were to develop and validate three tool anxiety scale forms for measuring tool anxiety within groups of individuals and to determine if selected demographic variables contributed to the prediction of subjects' mean tool anxiety scale scores;Two hundred eight (208) students at Iowa State University were administered the three tool anxiety scale measures (a paper and pencil form, a slide and audio tape form, and a video form) during Fall semester, 1983;Results revealed that: females had more tool anxiety than did males; subjects in non-technical career areas had more tool anxiety than did subjects in technical career areas; and subjects majoring in Elementary Education had more tool anxiety than did subjects majoring in any of the other five areas examined in this study. Also, it was revealed that subjects whose fathers were farmers were less anxious than subjects whose fathers were employed in other occupational areas;Sex, technical/non-technical career area, number of courses taken that utilized tools or machines, and three experiences had that utilized tools or machines, (worked on a farm, helped change a bicycle tire, and helped make home repairs) were the demographic variables that were found to significantly add to the prediction of subjects' tool anxiety scale scores.