The ASVAB subtests are designed to measure aptitudes in four domains: Verbal, Math, Science and Technical, and Spatial. The table below describes the content of the ASVAB subtests. The subtests are presented in the order in which they are administered.
| Subtest | Description | Domain |
|---|---|---|
| General Science (GS) | Knowledge of physical and biological sciences | Science/Technical |
| Arithmetic Reasoning (AR) | Ability to solve Arithmetic word problems | Math |
| Word Knowledge (WK) | Ability to select the correct meaning of words presented in context and to identify the best synonym for a given word | Verbal |
| Paragraph Comprehension (PC) | Ability to obtain information from written passages | Verbal |
| Math Knowledge (MK) | Knowledge of high school mathematics principles | Math |
| Electronics Information (EI) | Knowledge of electricity and electronics | Science/Technical |
| * Auto Information (AI) | Knowledge of automobile technology | Science/Technical |
| * Shop Information (SI) | Knowledge of tools and shop terminology and practices | Science/Technical |
| Mechanical Comprehension (MC) | Knowledge of mechanical and physical principles | Science/Technical |
| Assembling Objects (AO) | Ability to determine how an object will look when its parts are put together | Spatial |
*In the paper-and-pencil version of the ASVAB, AI and SI are combined into one single subtest (labeled AS), and Assembling Objects (AO) is not administered.