THIS STUDY WAS CONDUCTED BY THE UNITED STATES EMPLOYMENT SERVICE TO EXAMINE ONE ASPECT OF THE INTERRELATIONSHIP OF APTITUDES, JOB PERFORMANCE, AND AGE -- SPECIFICALLY, TO DETERMINE THE RELATIVE VALIDITY OF UNADJUSTED AND AGE-ADJUSTED GENERAL APTITUDE TEST BATTERY (GATB) APTITUDE SCORES FOR PREDICTING OCCUPATIONAL SUCCESS. ELEVEN LONGITUDINAL OCCUPATIONAL VALIDATION STUDIES, CONDUCTED ON SAMPLES VARYING IN SIZE FROM 56 TO 124 CASES, WERE SELECTED FOR THE ANALYSIS. FOR EACH SAMPLE THE VALIDITIES OF UNADJUSTED AND AGE-ADJUSTED APTITUDE SCORES FOR PREDICTING OCCUPATIONAL SUCCESS WERE COMPARED FOR THE NINE GATB SPECIFIC APTITUDE MEASURES. ALTHOUGH DIFFERENCES BETWEEN VALIDITIES TENDED TO BE SMALL, THE RESULTS INDICATED THAT IN SOME INSTANCES APTITUDE SCORES ADJUSTED FOR AGE HAVE VALIDITIES THAT ARE SIGNIFICANTLY DIFFERENT FROM VALIDITIES OF UNADJUSTED SCORES. THE DIRECTION OF THE DIFFERENCE IS DEPENDENT ON THE OCCUPATION, THE AGE RANGE REPRESENTED IN THE SAMPLE, AND THE PARTICULAR APTITUDE. THIS DOCUMENT APPEARED IN "JOURNAL OF APPLIED PSYCHOLOGY," VOLUME 51, NUMBER 2, 1967. (ET)