Neal Miller, along with John Dollard and O. Hobart Mowrer, helped to integrate behavioral and psychoanalytic concepts. They were able to translate psychological analytic concepts into behavioral terms that would be more easily understood. Specifically, they focused on the stimulus-response theory. These three men also recognized Sigmund Freud's understanding of anxiety as a "signal of danger" and that some things in Freud's work could be altered to fix this. Miller, Dollard and Mowrer believed that a person who was relieved of high anxiety levels would experience what is called "anxiety relief". Together with fellow psychologist O. Hobart Mowrer, Miller gives his name to the "Miller-Mowrer Shuttlebox" apparatus.