"Empiricism" does not usually refer to taking measurements (which seems to be what you have in mind); it is a theory of epistemology which holds that knowledge

"Empiricism" does not usually refer to taking measurements (which seems to be what you have in mind); it is a theory of epistemology which holds that knowledge is primarily experiential. (It just happens that many psychologists are causal empiricists, but it has nothing per se to do with their love of measurement.)