I__. - International Military Testing Association

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To further demonstrate how the Eour test surrogate battery surfaced by the
above research can serve as a bridge between alcohol (the indexing agent) and
military performance readiness (the synthetic ASVAB) we computed one further
regression equation from the synthetic ASVAB data described above. Equation
(2) predicts the ASVAB (scaled wit.h mean = 100 and SD = 15) from Code
substitution, Grammatical Reasoning, and Math Processing. Two Finger Tapping
was not used as its beta weight in the equation was quite low. The equa t ion
is:
ASVAB = .92CS + .42MP + .15GR + 26 (2)
where CS, MP, and GR are raw scores for Code Substitution, Math Processing,
and Grammatical Reasoning, respectively. Using this equation to fit the data
from the alcohol study, we can represent the perEormance decrements produced
by the various BAL levels relative to a metric based on a standardized ASVAB
as follows. These relationships are shown in Table 1.
Table 1. Predicted Standardized ASVAB Means and Standard Deviations
from Surrogate Battery Performance as a Function of Blood Alcohol Level
BAL Mean ASVAB SD
Baseline 103.6 12.3
0.050 104.7 13.4
0.075 101.8 12.7
0.100 96.5 13.9
0.125 90.3 15.9
0.150 85.9 13.4
CONCLUSION
The objective of the effort reported herein was to provide a quantitative
methodology to permit assessment of performance degradation in humans which
may result Erom exposure to toxic or stressor agents encountered on the
battleEield. The scientific literature has shown that performance on the
ASVAB is correlated with military job performance, and tests from a
microcomputer test battery have been developed which are sensitive to gases
like halon and to various toxic agents. Using these relations, the present
analyses were performed, the results of which are:
0 Performances on APTS subtests are correlated with subtests of a synthetic
ASVAB.
0 Increasing dosages of alcohol result in monotonically greater performance
decrements on APTS subtests.
0 The performance decrements can be indexed to percent blood alcohol via a
linear regression equation.
0 Performance decrement on APTS can be indexed to performance decrement On
aptitude tests via a linear regression equation.
0 Performance equivalency and dose equivalency relationships were
successfully demonstrated so that:
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