Impact testing, also known as neurocognitive testing, is a type of assessment used in the evaluation of concussions and other traumatic brain injuries. It typically involves a computer-based test that measures an individual's cognitive function, including their memory, reaction time, and processing speed. During impact testing, the individual takes a series of tests that may involve tasks such as recalling words or symbols, reaction time tests, and cognitive processing tasks. These tests are typically administered using specialized software that presents the tasks on a computer or other electronic device, and the individual responds by selecting or inputting their answers. The results of impact testing are compared to established norms for the individual's age, sex, and other relevant factors to assess their cognitive function relative to their peers. Changes in cognitive function, such as declines in memory or reaction time, may indicate potential cognitive deficits associated with a concussion or other traumatic brain injury.