What word or phrase does your mother always say?
sensitivity sen·si·tiv·i·ty (sěn'sĭ-tĭv'ĭ-tē)
The quality or condition of being sensitive.
The capacity of an organ or organism to respond to a stimulus.
The proportion of individuals in a population that will be correctly identified when administered a test designed to detect a particular disease, calculated as the number of true positive results divided by the number of true positive and false negative results.