Test items designed to measure general intelligence, mechanical information and personality balance were selected from the "Motor Vehicle Test," Series I, Revised, of Iowa State College, and administered to 220 Civilian Conservation Corps enrollees.
Proceedings of the Iowa Academy of Science
©1935 Iowa Academy of Science, Inc.
Henry, Lyle K. and Snodgrass, Arthur L.
"The Performance of Adults of Various Grade Levels on Specific Mental Functions,"
Proceedings of the Iowa Academy of Science, 42(1), 170-170.
Available at: https://scholarworks.uni.edu/pias/vol42/iss1/80