A test battery consists of a series of tests administered to assess different facets of a child’s or adult’s functioning (e.g., psychological functioning). A test battery is utilized by a professional (e.g., a psychologist) to assist in decision making, such as making a diagnosis, about an individual and determining whether there is a need for services and supports for that person. Introduced by Francis Galton in 1884, the initial test battery was used to measure an individual’s sensory and motor abilities. Once the battery of tests was administered, a report was written to summarize the findings. Test batteries have evolved over time.