What is an experimental psychologist to do, for example, when he is confronted by reports which say that a large percentage of failures is due to "ham-handedness''?

The term is clearly a portmanteau one, and covers a mass of different conditions. A very little instruction in methods of psychological observation and description would help to set this right. Further, there is now a mass of well-established information about the normal course of human reaction in learning and in the development of specialized skill, knowledge of which would lighten the task of the flying instructor and in [273] most cases increase his interest in his job. If it could be arranged that instructors should be given from time to time a brief course of lectures on the psychology of selection and training great advantage would accrue. I have written of these initial problems of selection as they concern candidates for service commissions. Exactly parallel problems arise in connection with very nearly every other specialized branch of an Air Force. The cost of applying psychological methods to the solution of these problems would be a mere nothing compared with that waste ...  more