Published research on EEG and cortical potentials began to appear in the scientific literature in the United States in the 1930s. In 1937 Dr Pauline Davis published the first U.S. paper on human auditory evoked potential recordings. She and her husband Hallowell Davis and their colleagues went on to publish key papers in this area in 1939. Professor Hallowell Davis established the ERA Club in 1968; this later became the International Evoked Response Audiometry Study Group (IERASG) (http://www.ierasg.ifps.org.pl/index.php?s=home) which will meet in Busan, Korea in 2015. This organisation provides a forum for the discussion of auditory evoked responses in research and clinical practice. Auditory evoked responses have now been used for many years to objectively estimate hearing sensitivity. Cortical auditory evoked potentials, the auditory brainstem response and steady state evoked responses continue to be used for this purpose, but there have been developments in statistical techniques for response identification and noise estimation. New stimuli are also being discussed (e.g. filtered chirps). Current and future developments include the use of evoked responses to aid clinical diagnosis and management of auditory neuropathy spectrum disorder and auditory processing disorder. Evoked responses may also enhance our understanding of speech processing and better guide hearing aid fitting and implant programming in people with cochlear hearing loss in the future. Evoked responses may also allow us to objectively: 1) assess auditory brain reorganisation after hearing loss, hearing technology, or auditory training/therapy, 2) measure attention effects on auditory processing, 3) evaluate unaided and aided auditory discrimination, 4) monitor or predict auditory perceptual development in children, and 5) differentially diagnose language and auditory processing disorders in people with developmental and acquired neurological disease. This presentation will provide a historical overview of evoked response audiometry and will discuss current and possible future developments.