Psychological measurements refer to the quantification of various psychological phenomena. It includes various techniques and methods that are used to measure psychological constructs such as intelligence, personality, emotions, mental health, and general well-being. Synonyms of psychological measurements include psychometrics, psychological assessment, psychological evaluation, and mental testing. All these terms revolve around the same concept of measuring the psychological characteristics of an individual. Psychometrics is a branch of psychology that deals with the design, administration, and interpretation of psychological tests. Psychological assessment is the systematic evaluation of an individual's psychological and behavioral characteristics. Psychological evaluation is a broader term that encompasses both assessment and diagnosis. Mental testing is a common term used to describe the process of measuring the cognitive abilities of an individual.