What is concept testing?
Concept testing puts an idea — a product, a claim, a pack, a piece of creative — in front of real consumers before you invest in building or launching it, and measures appeal, relevance, uniqueness, and purchase intent against alternatives or a benchmark. It helps you compare options by segment and understand the reasons respondents give for their preferences.
Monadic testing or sequential monadic testing: which should we use?
In monadic testing, each respondent evaluates one concept, so their ratings do not depend on concepts shown earlier in the survey. Sequential monadic testing asks each respondent to evaluate several concepts. It uses fewer respondents for the same number of ratings per concept, but earlier concepts can influence later answers. MX8 Labs supports both designs, with rotation and quotas. Choose the design around your comparisons and available sample.
What questions go into a concept test?
A typical core: overall appeal, relevance, uniqueness or differentiation, believability, purchase or usage intent, and open-ended likes and dislikes — plus category-specific measures like price sensitivity (Van Westendorp or Gabor-Granger) where the decision needs them. Open-ended responses are coded into themes across languages, so you can compare how often respondents mention each reason.
How many concepts and respondents do we need?
Start with the number of concepts, the segments you need to compare, and the smallest difference that would affect your decision. Early screening can use a smaller sample than a final comparison. Use the sample size calculator to plan each group, and check audience feasibility before fielding.