Steps in validating an instrument
If you have a value lower than 0.6, some CA programs let you delete a question from the test to see if it improves consistency.If it does, you may want to consider deleting the question from the survey.
You can combine questions that load onto the same factors, comparing them during your final analysis of data.
One of the proposed survey strategies you may have run across is the suggestion to validate the questions in your survey.
While many organizations may urge you to “add validation” as a quick survey tip, that’s about as far as their suggestion often goes.
Suggested sample sizes vary, although about 10 percent of your total population is a solid number of participants.
The more participants you can round up, the better, although even a smaller sample can help you weed out irrelevant or weak questions.
Search for steps in validating an instrument:
Step 1: Establish Face Validity This two-step process involves having your survey reviewed by two different parties.