Concept testing is a UX research method used to evaluate the potential success of a product or service concept. This typically involves presenting the concept to a group of potential users or customers and collecting their feedback and opinions. Concept testing can be conducted using a variety of methods, such as surveys, focus groups, or online polls. The goal of concept testing is to identify potential issues or weaknesses with the concept and to gather insights that can be used to improve the product or service before it is developed. Concept testing is typically used early in the design process, before a product or service has been fully defined or developed. It is an important step for ensuring that the final product will meet the needs and expectations of users and customers.