For products or services before their release, there is also a risk of information leakage, so careful consideration is needed.
Taking that into account, various research methods such as central location test, home use tests, and group interviews are used depending on the product or service to be examined.
For example, for beverages, it might be considered to measure satisfaction by having users of competing products participate in venue surveys. Also, for products like cosmetics where satisfaction may change over a certain period of use, it may be necessary to measure satisfaction through home use tests, where users use them in their daily lives.
When measuring satisfaction through group interviews, it is used when you want to collect more detailed information such as “why”, “what aspects,” and “how” the satisfaction was achieved, or what is needed to make the product even more satisfying, which may be difficult to obtain in CLT or home use tests.