in brief
- “Would you buy this?” records a hypothetical response under the conditions of the question.
- Stronger research examines recent choices, realistic alternatives, price, timing, and the sacrifices a purchase would require.
- Use interviews to understand the decision and behavioral tests to examine purchasing action; neither should be mislabeled as the other.
“Would you buy this?” is a weak stand-alone research question because it asks for a prediction without requiring a real tradeoff. A respondent can like an idea, want to be helpful, and say yes while having no immediate reason or budget to buy it.
Purchase-intent questions can still be useful when the study defines the offer, audience, price, and conditions. The problem is treating a favorable answer as a sales forecast without validating that interpretation.
what did new coke’s taste test leave unanswered?
Coca-Cola’s historical account says taste tests favored the new formula but missed consumers’ attachment to the original. Taste preference did not settle acceptance of the replacement.
Our interpretation is about scope, not an argument against testing. A question about taste answers a different question from one about losing a familiar product. Likewise, liking a new snack does not establish that someone will replace their current breakfast with it.
A positive reaction is evidence of a positive reaction. A purchasing forecast requires evidence about the purchasing decision.
research note from relvo
what should you ask instead?
| weak starting question | more useful investigation |
|---|---|
| Would you buy this? | Tell me about the last time you bought something for this problem. |
| Would you pay more? | What did you pay, and what alternatives did you compare? |
| Do you like the idea? | What do you understand the product would do? |
| Would this solve your problem? | How do you handle the problem today, and what is still difficult? |
| Would you switch? | What would have to change for you to replace the current option? |
These are prompts for an investigation, not a script to read mechanically. Let the person finish their account before probing. Establish dates and actual actions where they can recall them. Do not turn uncertainty into a made-up detail.
how do you make a concept test more realistic?
Show enough of the offer for the participant to understand it. Include price, pack size, channel, and a relevant alternative. A premium yogurt tested without its price is a different choice from the one made beside familiar brands in a refrigerator.
Ask what is unclear, what they believe, and what they would give up. Consider whether the product would replace an existing purchase or add another expense. Separate understanding, appeal, credibility, and intended action in the results.
hypothetical consumer example
A shopper likes a protein breakfast drink but already buys an inexpensive breakfast for the family. The research should examine when they would use the drink, what it would replace, and whether the benefit matters enough to justify the extra expense. Enthusiasm alone does not answer those questions.
what would count as evidence of action?
A purchase in a defined test records an action under those conditions. A deposit, sample request, or click records a different action. State which behavior was measured and avoid treating each as an interchangeable proxy for revenue.
For larger decisions, combine the explanation with a test of the relevant behavior. A short test may still leave repeat purchase unresolved. A promotion may produce trial that does not survive a return to the normal price.
When respondents praise an idea but do not act, investigate the gap rather than accuse them of dishonesty. See why praise may fail to become a purchase.
Ask what evidence would change the commercial decision before choosing a purchase-intent question. Bring that question to relvo.