Quantitative psychology

Quantitative psychology is the application of statistical and mathematical methods to the study of psychology. This area of study is loosely divided into the subfields of psychometrics and mathematical psychology. Psychometrics may be characterized as the application of statistical models to problems such as psychological scaling and test development, while mathematical psychology may be characterized as the development and testing of novel mathematical models that describe psychological processes.

Quantitative psychology is served by Division 5 of the American Psychological Association (Evaluation, Measurement and Statistics), which publishes the preeminent journal in the field, Psychological Methods.

Currently, over two dozen American universities offer Ph.D. programs in quantitative psychology within the psychology departments (additional universities offer similar programs through their education departments).