Technical b r Report - International Military Testing Association

magniture, with the perceptualmotor test (Coding Speedj being generally
most independent of the rest of the battery.
The reliability coefficients stem reasonably high for tests of only
25-item length, and pred.ictive accuracy is enhanced operationally by
utilizing combinations of sever31 tests. h’hy the Shop Information test
yielded the lowest equivalence coefficients in the battery is not apparent,
especially since its internal consistency coefficient is of comparable
magnitude to the rest of the set.
Occupational predictions fron ASVAB arc generally made utilizing
combinations of several tests. These combinations, both with ASVAB tests
and their counterparts in the services’ operational bdtteries, have undcr-
gone extensive validation study against criteria of training success in
large numbers of job specialties. The modal validity cocf ficicnt against
these criteria has been of the order 0.60, with a range of 0.35 to 0.75.
In summary, the ASVAB is a nine-test aptitude battery developed to be
shortened alternate forms of the ccrrron elements of the then service classifica-
tion bnttcrics. It has been empirically developed, and tried out on large
representative.samples of the population to which it is intended to bc
applied. The original form was in USC in the joint service high school
program for five years, Form 2 has been operational in the schools since
the beginning of this school year, and testing goals are in excess of a
million students by the end of the year.
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