Information asks questions about general facts
The WAIS Information subtest asks the person to answer spoken questions about general facts involving events, objects, places, and people. Rather than discovering a new rule from the question, the person draws on general knowledge acquired before the assessment. The task therefore shows the breadth of facts they can retrieve across different areas.
In the Japanese WAIS-IV, Information is a core subtest of the Verbal Comprehension Index, or VCI, alongside Vocabulary and Similarities. In the 2024 US WAIS-5, Information is a secondary subtest in the verbal-comprehension domain and contributes to the Verbal (Expanded Crystallized) Index, or VECI; it is not a primary VCI subtest and is not one of the seven subtests used to calculate FSIQ. The edition named on the report determines how the score contributes to composites.
Information depends on acquiring, retaining, and retrieving knowledge
Producing a correct answer from general knowledge involves three connected processes:
- Acquisition — encountering information and learning it as meaningful knowledge
- Retention — preserving that knowledge over time
- Retrieval — recalling the knowledge that answers the question and expressing it aloud
Having encountered a fact before is not enough if it was not retained, cannot be recalled at that moment, or cannot be expressed as an answer. Acquisition, retention, and retrieval are not three separate official scores. Their combined outcome appears in the single Information score.
Education, reading, and interests shape the range of general knowledge
General knowledge develops through more than formal education. Reading, work, hobbies, news, and everyday conversation all extend the range of information a person encounters over many years. Greater exposure to written material through reading has also been associated with broader general knowledge.
Interests influence which subjects a person explores and remembers. Someone may therefore have deep expertise in one field without having equally broad general knowledge across many fields.
What counts as appropriate general knowledge also varies by culture. The items in the Japanese WAIS-IV were selected and adapted for Japanese cultural and historical contexts. That evidence describes the Japanese edition; it is not evidence about the content or norms of an English-language edition.
What higher and lower Information scores can show
In the Japanese WAIS-IV, a higher scaled score indicates that, compared with people of the same age, the person retained a broad range of general facts across subjects and could retrieve the answer relevant to each question. Information encountered over years of learning and experience was available as usable knowledge.
A lower score means that the range of general knowledge retrieved correctly during the assessment was narrower than it was for the same-age norm group. Interpretation can consider the range of previous exposure through education and reading, how closely the person's interests overlapped with the topics asked about, long-term retention, retrieval at the time of testing, and the final spoken response.
After placing the scaled score in its same-age comparison, comparing Information with the person's Vocabulary and Similarities scores shows whether retrieving general facts is a relative strength or a greater demand than defining words precisely or reasoning abstractly with concepts. How to read WAIS results explains where that comparison fits in the full result-reading sequence.
How Information differs from Vocabulary and Similarities
Information, Vocabulary, and Similarities all draw on acquired language and meaning knowledge. They differ in what the person must do with that knowledge.
| Subtest | Direct task | Main processing involved |
|---|---|---|
| Information | Answer a question about a general fact | Acquiring, retaining, and retrieving general knowledge |
| Vocabulary | Explain the meaning of one word | Retrieving vocabulary, distinguishing precise meanings, and expressing a definition |
| Similarities | Explain what two words have in common | Comparing concepts, generating a shared relationship, and verbal abstract reasoning |
If Information is higher than Vocabulary, retaining and answering questions about general facts may be a relative strength compared with defining the meaning of one word precisely. If Information is higher than Similarities, retrieving acquired facts may be a relative strength compared with comparing two concepts and generating the relationship they share.
BrainTypeIQ examines the precision and use of knowledge through vocabulary and verbal analogies
Within BrainTypeIQ's nine-task design, Vocabulary (Antonyms) and Analogies contribute to crystallized intelligence, or Gc. BrainTypeIQ does not directly test the quantity of general factual knowledge. Instead, the two tasks show how precisely acquired language knowledge is understood and how effectively it can be used to reason about relationships.
Vocabulary (Antonyms) asks the person to distinguish the word with the opposite meaning without being drawn toward a synonym or a merely related word. Analogies requires the relationship in one word pair to be identified and applied to another pair. Together, they provide a focused picture of both the precision of word knowledge and the ability to use that knowledge accurately.