The Psychonomic Society is an international scientific society of over 4,500 scientists in the field of experimental psychology. The mission of the Psychonomic Society is to foster the science of cognition through the advancement and communication of basic research in experimental psychology and allied sciences. It is open to international researchers, and almost 40% of members are based outside of North America. Although open to all areas of experimental and cognitive psychology, its members typically study areas such as learning, memory, attention, motivation, perception, categorization, decision making, and psycholinguistics. Its name is taken from the word psychonomics, meaning "the science of the laws of the mind".

Experimental psychology refers to work done by those who apply experimental methods to psychological study and the underlying processes. Experimental psychologists employ human participants and animal subjects to study a great many topics, including sensation, perception, memory, cognition, learning, motivation, emotion; developmental processes, social psychology, and the neural substrates of all of these.