Concept testing evaluates an idea while it is still expressed in words, before it is designed, produced or launched.
The idea may be a new product or service, a proposition, a name, a price or promotional offer, or the central thought behind a communication.
Testing establishes how clearly the concept is understood, how relevant and credible its claims are, how it compares with what the audience uses today and whether people would buy it, sign up to it or act on it.
Where several concepts are in play, it identifies which to progress and how each could be strengthened, so that design and development budget goes to the ideas most likely to succeed.
In a quantitative concept test, each person sees either one concept (a monadic design, which gives the cleanest read on each idea) or several in turn (a sequential monadic design, which is more economical when there are many to compare). Brandspeak recommends the design that suits the number of concepts and the decision to be made.