STEP 8:ASSESS BASIC ASPECTS OF VALIDITY—DOES THE INSTRUMENT MEASURE WHAT IT CLAIMS TO MEASURE?
The next step is to look for evidence of validity. In the instrument-development process, this is the process of reality testing. It is here that the developer begins to see whether the model holds up for real managers in real jobs.
In other words, validity is integrity. If you do not know for sure whether an instrument measures what it says it measures and you do not have evidence that scores are related to effectiveness on the job, you will not know how to interpret data from that instrument. If you have not seen evidence that managers can improve their performance, you cannot know whether the instrument’s scales represent areas in which managers ...
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