Technical b r Report - International Military Testing Association

ESULTS
A Kruskal - Wallis one way analysis of variance ylelded an Hc value
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significant at above the .OS level. Group comparison’s, again using the
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Kruskal-Wallis formula, were made which indicated significant differences
between several of the specific groups.
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INSERT FIGURE 1 HERE
These results imply that a definite difference existed between the
group which received maximum feedback from the quizzes and both the
. control and the quiz - no feedback group. This difference bears out
the hypothesis and was presumably due to the effects of feedback. The
max feedback group ‘did not however, differ significantly from the
mlnimim, feedback group (group I I).
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In this respect the increase in
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feedback did not cause a siTnificant difference from the lesser feed-
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back level and.fails to bear out the finer implications of the
hypothesis. The trend was toward an increase in feedback predicting
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increase in performance, but in this case it,did not approach
significance.
OlSCUSSlON
The results of this experiment bear out the hypothesis in regard
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to feedback versus no feedback and seem to confirm a statement made -
previously (Sassenrath and Garveri ck, 1965) that the type or amount of
feedback Is not of extreme importance in these situations. The
important thing is that there is some feedback. The data shows a
trend, although not always at significant levels, that as the amount
of feedback increases so does performance.
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