Relationships were investigated between (1) General Aptitude Test Battery scores and trainee selection criteria in a manpower training program at the James Connally Technical Institute, Waco, Texas, and (2) trainee success in gaining training related employment and a salary increase. Subjects (244 trainees taking eight classes in mechanics, mechanical drafting, and water and sewage maintenance) were divided into six groups by subsequent employment and course completion or noncompletion. Data on race, marital and family status, previous salary, and personal traits were also gathered. Findings included the following: (1) aptitudes, intelligence, perception, motor coordination, finger and manual dexterity, and educational level were all related to success (or lack thereof) in obtaining training related employment; (2) finger dexterity, age, and educational level were significantly related to salary increases and training related employment after training; (3) most trainees were employed, 60% in training related occupations; (4) 82% of subsequently employed trainees received higher salaries; (5) finger dexterity scores of those in training related employment were higher than those of less successful trainees. (author/ly)