A “battery” refers to a group of tests, rather than one single test. The CAT-ASVAB is actually a sequence of 10 different tests listed below. Two of the tests, Auto Information and Shop Information, are immediately combined into one score, which is why the CAT-ASVAB is sometimes described as having 9 sections. Scores from these 10 tests are combined to produce four domain scores: Verbal (V), Math (M), Science and Technical (T), and Spatial (S). A Verbal Expression (VE) score also combines the Word Knowledge (WK) and Paragraph Comprehension (PC) scores.
- Word Knowledge (WK)
- Arithmetic Reasoning (AR)
- Mechanical Comprehension (MC)
- Automotive Information (AI)
- Shop Information (SI)
- Electronics Information (EI)
- Mathematics Knowledge (MK)
- General Science (GS)
- Paragraph Comprehension (PC)
- Assembling Objects (AO)
The domain scores are then combined themselves to produce various composite scores. The most important composite score is the Armed Forces Qualification Test (AFQT) score, which is calculated as 2VE + MK + AR, but converted to a percentile (what percent of the population performed at the same level as you, or worse) for score reporting. The AFQT is vitally important because it is used to determine enlistment eligibility. That is, you must achieve a minimum standard in order to even be considered for enlistment. Each branch of service also uses its own different composite scores.