Once we have defined clearly our conceptual criterion, we must then specify and refine operational
measures of criterion performance (i.e., the measures actually to be used). Regardless
of the operational form of the criterion measure, it must be taken at some point in time. When
is the best time for criterion measurement? Optimum times vary greatly from situation to
situation, and conclusions therefore need to be couched in terms of when criterion measurements
were taken. Far different results may occur depending on when criterion measurements
were taken (Weitz, 196l), and failure to consider the temporal dimension may lead to
misinterpretations.
Once we have defined clearly our conceptual criterion, we must then specify and refine operationalmeasures of criterion performance (i.e., the measures actually to be used). Regardlessof the operational form of the criterion measure, it must be taken at some point in time. Whenis the best time for criterion measurement? Optimum times vary greatly from situation tosituation, and conclusions therefore need to be couched in terms of when criterion measurementswere taken. Far different results may occur depending on when criterion measurementswere taken (Weitz, 196l), and failure to consider the temporal dimension may lead tomisinterpretations.
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