ASSOCIATION TESTS are used in psychology to discover the mental connections which underlie such cognitive functions as perception, learning, memory, language ability, reasoning and judgment, and also in psychopathology to discover the way in which emotional experiences upset normal mental connections. In the usual association test an individual is given a word and is told to respond with the first word which comes into his mind. The exact procedure varies for different purposes. The kind of words with which the individual responds and the length of time it takes him to make his replies are factors which throw important light on the nature of mental constitution, variation and abnormality.