This report presents the logic and initial results of a program for the development of unique measures for assessing the potential of "low aptitude" personnel for certain Navy ratings. The logic is based on the conjecture that recruits who can learn a sample of the job requisites in a mini on-the-job training situation will demonstrate the same ability on the job. This is held to apply regardless of the recruit's low score on the usual classification tests. The initial and criterion tests are described and the correlations among the mini job learning test results and the usual Navy predictors are given, and the relationship of the derived cultural deprivation scores both to the usual Navy classification tests and the job learning tests is presented. (Author)