WPPSI Ancillary Index Scores

Question 1

What is the primary purpose of the Vocabulary Acquisition Index (VAI) on the WPPSI-IV?

Accepted Answer

To assess receptive and expressive vocabulary

Answer

The VAI is specifically designed to measure both receptive vocabulary (Receptive Vocabulary subtest) and expressive vocabulary (Picture Naming subtest).

Question 2

Which two subtests comprise the Vocabulary Acquisition Index (VAI)?

Accepted Answer

Receptive Vocabulary and Picture Naming

Answer

The VAI consists of Receptive Vocabulary (measuring understanding of words) and Picture Naming (measuring expressive vocabulary).

Question 3

What is the primary purpose of the Nonverbal Index (NVI) on the WPPSI-IV?

Accepted Answer

To provide an intelligence estimate that minimizes verbal demands

Answer

The NVI provides a measure of general cognitive ability while minimizing the need for verbal instructions and verbal responses, making it useful for children with language barriers or hearing impairments.

Question 4

For ages 4:0–7:7, how many subtests comprise the Nonverbal Index (NVI)?

Accepted Answer

6

Answer

For ages 4:0–7:7, the NVI includes six subtests: Block Design, Object Assembly, Matrix Reasoning, Picture Concepts, Bug Search, and Cancellation.

Question 5

Which cognitive processes does the General Ability Index (GAI) intentionally exclude compared to the Full Scale IQ?

Accepted Answer

Working memory and processing speed

Answer

The GAI excludes working memory and processing speed subtests, providing a purer measure of higher-level cognitive abilities (verbal comprehension, visual spatial, and fluid reasoning).

WPPSI - Wechsler Preschool and Primary Scale of Intelligence Practice Test

WPPSI - Wechsler Preschool and Primary Scale of Intelligence Practice Test

WPPSI Ancillary Index Scores