Abstract: An adaptive screening tool for hearing loss for use over the internet. The test is part of a web-based system which providing hearing related information and health services. The system allows users of the internet located anywhere in the world to perform a screening test in the privacy of their own homes or offices. The test is performed well above the threshold level of the user, and screens users for their ability to detect small changes in intensity within bursts of sound delivered to the user through headphones. Users are given a first or preliminary test to establish a base intensity. Then, after the base intensity is established, a second test for hearing loss is presented. The second test asks the user to identify which of a plurality of similar sounds, or stimuli, is different from the others because it has a short duration deviation embedded in it.