diagnostic tool

A diagnostic tool is a resource or method used to assess and identify issues or problems in a system, process, or individual. In general knowledge contexts, it can refer to instruments, tests, or software designed to gather information and analyze conditions. For example, in education, it might assess a student's understanding of a subject; in health, it could be a medical test used to identify a condition. Essentially, diagnostic tools help determine what is wrong and guide decisions for improvement or treatment.