As implied, the problem of the present investigation was to estimate the effects of a thirty-year age increment upon individual and trait differences in eight measurable mental functions.
Proceedings of the Iowa Academy of Science
©1952 Iowa Academy of Science, Inc.
Owens, W. A. and Clampitt, Richard R.
"The Effects of a Thirty Year Age Increment upon Individual and Trait Differences in Intelligence,"
Proceedings of the Iowa Academy of Science, 59(1), 385-388.
Available at: https://scholarworks.uni.edu/pias/vol59/iss1/51