THE NINE APTITUDES MEASURED BY THE GENERAL APTITUDE TEST BATTERY ARE INTELLIGENCE, VERBAL APTITUDE, NUMERICAL APTITUDE, SPATIAL APTITUDE, FORM PERCEPTION, CLERICAL PERCEPTION, MOTOR COORDINATION, FINGER DEXTERITY, AND MANUAL DEXTERITY. THIS MANUAL PRESENTS (1) PERCENTILE EQUIVALENTS OF APTITUDE OR STANDARD SCORES FOR ADULTS, 10TH GRADERS, AND 9TH GRADERS, (2) MINIMUM INTELLIGENCE SCORES FOR THREE TYPES OF COLLEGES, (3) A DESCRIPTION OF THE OCCUPATIONAL APTITUDE PATTERN STRUCTURE, (4) THE OCCUPATIONAL APTITUDE PATTERNS FOR 753 OCCUPATIONS, AND (5) AN ALPHABETICAL INDEX OF THESE OCCUPATIONS. THE APTITUDE PATTERNS CONSIST OF THE MOST SIGNIFICANT APTITUDES AND THE CRITICAL SCORES ESTABLISHED AS MINIMUM SCORES FOR A GROUP OF OCCUPATIONS HAVING SIMILAR APTITUDE REQUIREMENTS. THE TITLES AND CODES FOR THE OCCUPATIONS SHOWN ARE TAKEN FROM THE DICTIONARY OF OCCUPATIONAL TITLES. THIS DOCUMENT IS AVAILABLE AS L7.25/3--AP8/3/SEC. II FOR 45 CENTS FROM SUPERINTENDENT OF DOCUMENTS, U.S. GOVERNMENT PRINTING OFFICE, WASHINGTON, D.C. 20402. (MM)