It has been known for many years that sound stimuli can modify the electrical activity of the brain. The possibility of developing useful clinical tests of hearing based upon this fact has also long been recognized. Efforts to create such tests, however, have until recently yielded relatively unimpressive results. The developments of the past five years are another matter, and this session will review them for interested psychologists and physiologists, and for specialists in instrumentation related to audiometry. New information on brain events time locked to stimulus presentation—the so‐called evoked responses—will be emphasized, along with the recording methods presently used to visualize them. Speakers will describe the way these evoked potentials are being used in the testing of hard‐of‐hearing patients. By emphasizing certain limitations of the methods currently employed they will also point to the future developments by which electric response audiometry may become an even more powerful clinical tool.