Summary AN effort was made to find personal qualifications that might be predictive of earnings in business. A follow‐up by questionnaire five years after graduation was made for members of three MBA classes who had previously taken an eleven‐instrument battery. Ninety percent responded. A comparison of the highest third and the lowest in terms of present compensation showed 13 differences at the .05 level of significance or higher among 55 predictor variables. At the .01 level were second year Graduate School of Business grade point average (GPA), Strong Vocational Interest Blank (SVIB) Personnel and Management Orientation scales, Guilford‐Zimmerman Ascendance, Ghiselli's Decision Making and Initiative (from his Self‐Description Inventory), and the Individual Background Survey. Hours of work and job satisfaction were greater for high earners.

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The United States military services desperately needed appropriate classification procedures when World War II started. The Army General Classification Test (AGCT), a mental ability test, was taken by more than 12,000,000 soldiers and marines to help the Army classify them for specialty and officer training. In 1940, prior to Pearl Harbor, the Personnel Research Section of the Adjutant General's Office in the War Department developed the AGCT. This article describes the efforts to produce the AGCT as well as interview procedures, trade tests, and aptitude tests for mechanical and clerical work.

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To predict earnings S and 10 years after graduation for MBAs, regression models were developed on a sample of 266 graduates and validated against a new set of 70. The predictors included personality tests administered shortly after entrance into the MBA program, age at graduation, business aptitude tests, grade point average, and earnings at graduation and S and 10 years after graduation. Separate analyses were run for predictors available (a) at entrance, (b) at graduation, and (c) S years after graduation. The cross-validated multiple correlations for predicting 10-year earnings were .38, .45, and .65, respectively. Significant predictor variables included Harrell's High Earner's Scale and second-year grade point average. Age at graduation was significant in predicting 5-year but not 10-year earnings.