Verbal Comprehension Index (VCI) Flashcards

Which of the following cognitive abilities is PRIMARILY assessed by the Verbal Comprehension Index (VCI) of the WAIS?

Answer: Acquired knowledge, verbal reasoning, and concept formation.

The Verbal Comprehension Index (VCI) is designed to measure an individual's crystallized intelligence. This includes their ability to understand and use spoken language, the breadth and depth of knowledge acquired from their environment, and verbal concept formation and reasoning.

A psychologist is administering the WAIS and needs to calculate the Verbal Comprehension Index (VCI). Which combination of CORE subtests must be administered?

Answer: Similarities, Vocabulary, Information

On the WAIS-IV, the core subtests that comprise the Verbal Comprehension Index are Similarities, Vocabulary, and Information. Comprehension is a supplemental subtest for this index.

An examinee scores significantly higher on the Vocabulary and Information subtests compared to the Similarities subtest within the VCI. This particular pattern may suggest a relative strength in which area?

Answer: Acquired factual knowledge

The Vocabulary and Information subtests heavily draw upon an individual's stored fund of general knowledge and word definitions (crystallized intelligence). The Similarities subtest, while also verbal, places a greater demand on abstract verbal reasoning and identifying underlying conceptual links. Therefore, higher scores on Vocabulary and Information relative to Similarities point towards a strength in acquired factual knowledge.

The VCI is considered a strong measure of which type of intelligence, according to the Cattell-Horn-Carroll (CHC) theory?

Answer: Crystallized Intelligence (Gc)

The Verbal Comprehension Index (VCI) aligns closely with the CHC factor of Crystallized Intelligence (Gc), which involves the breadth and depth of a person's acquired knowledge, the ability to communicate one's knowledge, and the ability to reason using previously learned experiences or procedures.

A 45-year-old client with a master's degree in literature is being assessed. During the WAIS administration, they provide exceptionally detailed and nuanced definitions on the Vocabulary subtest and demonstrate a vast fund of general knowledge on the Information subtest. However, they struggle to explain the relationship between abstract concepts on the Similarities subtest. Which statement is the most likely interpretation of this VCI performance?

Answer: Performance suggests strong crystallized intelligence but a potential relative weakness in abstract verbal reasoning.

This scenario illustrates a common clinical pattern. The client's strong performance on Vocabulary and Information reflects a well-developed fund of acquired knowledge (crystallized intelligence), which is consistent with their educational background. Their difficulty with the Similarities subtest, which requires identifying abstract categorical relationships, points to a specific challenge in abstract verbal reasoning rather than a global verbal deficit.

Which VCI subtest requires an individual to answer questions about general principles and social situations, thereby measuring verbal reasoning, practical knowledge, and social judgment?

Answer: Comprehension

The Comprehension subtest (a supplemental VCI subtest) is specifically designed to assess an individual's understanding of social conventions, practical knowledge, and their ability to use judgment in social situations by asking questions like 'Why do we have laws?'.