A Comparison of Three-Subtest AFQT and Four-Subtest AFQT.
ARMY RESEARCH INST FOR THE BEHAVIORAL AND SOCIAL SCIENCES ALEXANDRIA VA
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The new AFQT-9 and -10, still under development, and the AFQT score obtained from the Armed Services Vocational Aptitude Battery ASVAB have only three subtests arithmetic reasoning, word knowledge, and pattern analysis the tool knowledge items have been deleted. The three service laboratories agreed that the tool knowledge subtest did not contribute enough to the validity of the AFQT to warrant including it. Validity data for the AFQT subtests are presented in the Appendix. Tool knowledge items have been dropped from the new Army Classification Battery ACB and from the new Navy Basic Test Battery, which is about to be introduced for operational use. The deletion of the 25 item tool knowledge test has given rise to a concern of the effects upon individual performance, especially of the low scoring person. Individuals with low scores on AFQT usually obtain higher mean scores on the tool knowledge test than on the other subtests. This is reflected in the lower correlation between tool knowledge and the remaining three subtests than between each of the other subtests. Score distributions of the three and four subtest batteries were compared and analyzed in order to determine the effects of deleting the tool knowledge items.