Army Alpha/Army Beta

Kevin R. Murphy

The United States entered World War I late in the conflict and faced the problem of turning large numbers of often poorly educated draftees into an effective army in a short period of time. The American Psychological Association volunteered its services to the war effort, and a committee, headed by Robert Yerkes and including psychologists such as Arthur Otis and Lewis Terman, was assigned the task of developing a practical method of measuring the intellectual level of individuals in large groups. Their efforts led to the development of two tests, Army Alpha and Army Beta. Army Alpha was a written test that could be administered to large groups of recruits and that provided a rough measure of general intelligence. Army Beta, a nonverbal test designed for illiterates and for recruits who spoke little or no English, could also be administered to groups and used simple pictorial and nonverbal instructions. Army ...

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