Computerized Adaptive Testing (CAT) was first developed by the Department of Defense in the early 1960`s; it has since become the unassailable standard in vocational testing. From the original CAT research, the DoD created the Armed Services Vocational Aptitude Battery (ASVAB), now the world`s largest and most-administered test battery. This book traces the history of the DoD`s research, development, and implementation of the (CAT-ASVAB), and presents exciting new research on the growing areas where this type of test can be used. The CAT-ASVAB has been justly hailed as a battery that has dealt successfully with psychometric, economic and political issues. This book sets out a whole new way of using technology to measure and encourage optimum performance.