Technical Report - International Military Testing Association

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LOXCAL EKPIRICAL
Content Valldfty
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Refers to how vcll the content of
the tent samples the subject matter or
� ituatioo about which conclusions are to
ba dravn. Content Valid& is especially
important Ln an schicvenent teat. Rxamplea
: testbook analysis, description
of the universe of itena. rdoquacy of
the eI[Icple, represanta~:ivencss of the
teat content, intarcorr?lationa of
subocorcs, opinions of jury of experts.
1tcm structure
Includes (1) Corroborative evidence
from item analysis rupporting the other
characteristics of the teat; i.e.. interrclntionahips
between items, bctvecn items
and scores, and between items and criteria;
(2) Item ccmposftion. For graphic items,
it emphasizes perceptual clarity and rclated
format functions. For verbal itms,
i< mphasircs conceptual clarity in the
cqra8oion of itema. For both graphic and
verbal items), it Emphasizes functions of
dietractors.
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Construct Validtty
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Concarns the psychological qt.-lities e teat
mcaaurco. By both logical md empirical mcthodr
the theory und’erlying the test is validated.
Exmpleo: Corrciatims o f the teat scorea, factor
malysir, uoc of inventories. studying rhc effect
of speed on test scores.
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Predictive Validity
Relates to hw veil predictions u.ade
rfrom the test are confitued by data collactcd
at a later time. -loo‘? Correlations
of intelligence test8coras with
cwrfe gradeo, corrclatioo of teat acores
obtained at beginning of year with msrka
earned at the md of the yaLr.
Concurrent Vafidlty
Refcra to hov veil teat mores natch
mcasuree of contcmporsry criterion porfomance.
Examplea: Cowparing of scores
for men in an occupation vith these for
men-in-general, correlation of pcraonaPity
test scores with eotiwtcs of adjustments
made in the mmnrcling interviews, correlation
of end-of-course achieveac:rt or
ability test scores with school okra.
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