Avoiding Question Stacking in Mystery Shopping
When developing your mystery shopping questions, it’s important to avoid question stacking. Question stacking happens when a single question contains multiple smaller questions within it, which can lead to confusing or unreliable responses.
For example, consider the question:
“Are all refund slips present and signed by the manager?”
This actually combines two separate questions:
- Are the refund slips present?
- Are they signed by the manager?
If the receipts were all present but not all signed, how would the shopper answer? Yes or no? Likewise, if all receipts were signed but some were missing, the question still cannot be answered clearly.
These types of questions try to do too much work at once and can distort the feedback you receive. Each question should focus on one specific measurement to provide accurate and actionable insights.
By separating the example into two questions, you gain more value:
- If receipts are present but unsigned, the issue lies with manager compliance.
- If receipts are missing entirely, the issue points to a process failure in collecting them.
Understanding what information you need to optimize your customer experience is the first step. But formatting your questions to dig deeper into each issue is equally important.
No Means What Again?
Another way to improve your question design is to ensure that “yes” always indicates a positive outcome and “no” always indicates a negative outcome.
For example, asking:
“Did you have to wait in line for more than ten minutes?”
In this case, the ideal outcome is no, but when you’re reviewing dozens of questions and results, it can become confusing when “no” sometimes means success and other times means failure.
Instead, rephrase the question:
“Was your wait time less than ten minutes?”
Now, the positive response is yes, which is intuitive and consistent.
Best Practices for Better Data
- Keep questions simple and focused — one idea per question.
- Avoid combining unrelated issues into a single prompt.
- Phrase questions consistently so answers are clear and easy to interpret.
- Design questions to yield actionable insights that directly support your goals.
At HS Brands Global, we specialize in helping you design smarter questions and collect better data to drive measurable improvements through an efficient and effective Mystery Shopping program.
For more information, contact our team today.
