Technical b r Report - International Military Testing Association

However, the mean time for those using the audio tapes was a week longer
than those using the other versions of the CDC.
times for the three groups was not significant.
The difference in completion
Crnc lusions
As a result of the analysis uf the data evolved from this study, the
following conclusions are hereby stated.
The the experimental groups had better final CDC grades than did the
control group.
The differences in grades of the two experimental groups xas not
statistically significant. The audio-supplemented experimental group
had a net-mean increase of their final .grade over their pre-test grade
1.78 pr,ints more than the non-audio supplemented group; but the non-audiosupplemented
group had a mean final grade 3.2 points higher than the
audio-supplemented group.
Any higher grades of the experimental grouns can be attributed to
t:he revised text as much as to any
groups were shah-n as equivalent in
Yean completion tines for the
another.
&dio supplementation was not
in this experiment.
Ref crenccs
audio supplementation as all three
mental ability and pre-course knowledge.
three groups were within a week of one
a cost-cffcctive means of instruction
Effectiveness of Exrerimcntal Training Naterials for LCW Ability Airmen,
Kaynce S. Sellnan, Captain, USAF, AFHRL-‘LX-70-10, June 1970.
59
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