An ABR is another type of objective evaluation tool used to obtain information regarding a patient’s hearing. In addition to adults, this test is used in diagnosing hearing problems in newborns, toddlers and preschoolers or patients who cannot answer questions or identify objects. The ABR test relies on the brain’s responses to different types of stimuli presented at various sound levels to assist in diagnosis hearing loss. This type of testing is ordered when traditional audiometry cannot be completed or when further information is needed to rule out possible medical issues.