Psychometric refers to a branch of psychology that deals with the development and administration of tests to measure mental ability, personality traits or other characteristics. The term comes from the Greek words “psyche” (meaning mind) and “metron” (meaning measure). Psychometrics involves the use of statistical methods to assess the validity and reliability of these tests, as well as their ability to predict performance in a particular job or situation. This field is widely used in industries such as education, employment, and psychology for selecting employees, evaluating students' progress, diagnosing mental health disorders, and more.