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I__. - International Military Testing Association

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Table 2<br />

Generalizability Coefficients for Hands-On Tests<br />

Task One Rater Two Raters<br />

*Broadcast Operator 0.96 0.98<br />

*Log Messages 0.96 0.98<br />

*File Messages 0.95 0.98<br />

*Manually Route Messages 0.95 0.98<br />

Change Paper/Ribbons 0.60 0.75<br />

Establish System - Golf 0.91 0.95<br />

Establish System - November 0.94 0.97<br />

*Inventory Classified Documents 0.69 0.82<br />

Preventive Maintenance - Receiver 0.93 0.96<br />

Preventive Maintenance - Transmitter 0.95 0.98<br />

*Prepare Message DD173 0.98 0.99<br />

*Prioritize Outgoing Messages 0.90 0.95<br />

*Type/Format/Edit 0.96 0.98<br />

*Verify Outgoing Messages 0.97 0.98<br />

*Indicates primarily product scored tests.<br />

Table 3<br />

Intertask/Item Correlations by Test Component<br />

Component Correlation<br />

Hands-On 0.89<br />

Written Performance 0.74<br />

General Knowledge 0.71<br />

Intercorrelations Amona Test Methods<br />

Correlations, particularly between hands-on and written performance<br />

tests, are important because of the possibility of substituting written tests<br />

for resource-demanding hands-on tests. The correlations between written and<br />

hands-on task tests are shown in Table 4 and the overall correlations between<br />

test methods is shown in Table 5.<br />

532

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