WPPSI Ancillary Index Scores 2 — Questions and Answers
Question 1: For which child population is the Nonverbal Index (NVI) particularly recommended?
- Children with superior intellectual abilities
- Children with language impairments, hearing loss, or limited English proficiency (Correct answer)
- Children who have previously taken the WPPSI
- Children with motor coordination difficulties
Correct answer: Children with language impairments, hearing loss, or limited English proficiency
The NVI is especially useful for children with language-based disabilities, hearing impairments, or those who are English language learners, as it minimizes verbal demands.
Question 2: Which primary indexes contribute subtests to the General Ability Index (GAI)?
- Verbal Comprehension Index, Visual Spatial Index, and Fluid Reasoning Index (Correct answer)
- Verbal Comprehension Index and Processing Speed Index only
- Visual Spatial Index and Working Memory Index
- Fluid Reasoning Index and Cognitive Proficiency Index
Correct answer: Verbal Comprehension Index, Visual Spatial Index, and Fluid Reasoning Index
The GAI draws subtests from the VCI (Similarities, Vocabulary), VSI (Block Design, Object Assembly), and FRI (Matrix Reasoning, Picture Concepts).
Question 3: What does the Cognitive Proficiency Index (CPI) primarily assess?
- Higher-order verbal reasoning
- Nonverbal visual-spatial problem solving
- Cognitive efficiency including working memory and processing speed (Correct answer)
- Receptive and expressive vocabulary acquisition
Correct answer: Cognitive efficiency including working memory and processing speed
The CPI measures cognitive efficiency by combining working memory subtests (Picture Memory, Zoo Locations) and processing speed subtests (Bug Search, Cancellation).
Question 4: When would a clinician prefer to report the GAI rather than the FSIQ?
- When the child performs poorly on all subtests
- When there is a significant discrepancy between higher-order abilities and cognitive efficiency (Correct answer)
- When the child's VCI is lower than their VSI
- When all five primary index scores are equivalent
Correct answer: When there is a significant discrepancy between higher-order abilities and cognitive efficiency
The GAI is preferred over the FSIQ when there is a meaningful GAI-CPI discrepancy, suggesting the FSIQ may not accurately represent the child's cognitive potential.
Question 5: How does the NVI for ages 2:6–3:11 differ from the NVI for ages 4:0–7:7?
- The younger age NVI includes more subtests
- The younger age NVI includes only three subtests: Block Design, Picture Memory, and Object Assembly (Correct answer)
- Both age groups use identical subtests
- The younger age NVI does not include Block Design
Correct answer: The younger age NVI includes only three subtests: Block Design, Picture Memory, and Object Assembly
For ages 2:6–3:11, the NVI includes only three subtests (Block Design, Picture Memory, Object Assembly), while the older age group NVI includes six subtests.
Question 6: Which of the following best describes the relationship between the GAI and CPI in the WPPSI-IV?
- They measure identical cognitive constructs
- Together they comprise all components of the Full Scale IQ (Correct answer)
- The GAI measures fluid reasoning while the CPI measures crystallized intelligence
- The GAI and CPI are both derived from the same four subtests
Correct answer: Together they comprise all components of the Full Scale IQ
The GAI and CPI together account for all subtests included in the FSIQ, representing higher-order abilities and cognitive efficiency components respectively.
Question 7: What score metric is used for WPPSI-IV ancillary index scores?
- Mean of 10, standard deviation of 3
- Mean of 100, standard deviation of 15 (Correct answer)
- Mean of 50, standard deviation of 10
- Mean of 100, standard deviation of 10
Correct answer: Mean of 100, standard deviation of 15
Like all WPPSI-IV composite scores, ancillary index scores use a metric with a mean of 100 and a standard deviation of 15.
WPPSI Ancillary Index Scores 2
For which child population is the Nonverbal Index (NVI) particularly recommended?