Avoid double-barreled questions
A double barreled question is one that is really two questions in one. See the example below:
- Objective:
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- To know the experience level of participants who attended an editing workshop.
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- Very Poor:
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- Had you ever edited Wikipedia and Commons before this workshop?
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- This is actually asking two questions; whether participants edited Wikipedia or whether they edited Commons.
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- Poor:
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- Had you ever edited Wikipedia before this workshop?
- Had you ever edited Commons before this workshop?
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- While some participants may have edited commons, most people typically participate in commons by uploading a photo.
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- Better:
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- (all three)
- Have you ever edited Wikipedia?
- Have you ever uploaded a photo to Wikimedia Commons?
- Have you ever edited Wikimedia Commons?
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- These three questions asked separately better gets at editor's previous experience on Wikipedia and Commons. More questions could be used as well to get a sense of participants' level of experience.
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