An information processing approach was applied to the development and validation of a test battery intended for personnel selection, classification, and guidance; and design of training programs. The approach specifies that tests should measure specific cognitive processes and basic abilities, rather than prior experience. Tests should be short, easy to administer, statistically independent, and reliable. Taken as a whole, the test should not be designed to predict ability or interest in a particular job. Sixty eight college students were tested twice on eight tasks: (1) physical match; (2) letter rotation; (3) scan and search; (4) set membership; (5) letter recall; (6) mental addition; (7) sentence recall; and (8) sentence recognition. Results showed alternate forms of the tasks were comparable with previous findings for all but task 8. The adequacy of the tasks as measures of individual differences and as measures of information processing oPerations varied from task to task. The first four tasks were selected for the battery; tasks 5 and 6 were considered marginal (needed improvement); and tasks 7 and 8 were excluded. (Sample items from each task are appended.) (CP)