WAIS Perceptual Reasoning Index (PRI) 3

Question 1

Which statistical approach is used to determine whether an individual examinee's PRI–VCI discrepancy is meaningful?

Accepted Answer

Comparing the difference to the critical value for statistical significance in the WAIS-IV normative tables

Answer

Clinicians use WAIS-IV normative tables that specify how large a difference must be to reach statistical significance (e.g., p < .05 or p < .01) based on the standardization sample.

Question 2

When scoring Block Design, which type of error results in a time-bonus point being forfeited even if the design is ultimately correct?

Accepted Answer

Completing the design after the time limit expires

Answer

Block Design awards time-bonus points only for correct responses completed within specific time thresholds; exceeding the time limit forfeits any bonus.

Question 3

Matrix Reasoning on the WAIS-IV differs from Raven's Progressive Matrices primarily in that it:

Accepted Answer

Uses a multiple-choice response format with a limited set of options rather than an open construction response

Answer

WAIS-IV Matrix Reasoning uses a closed multiple-choice format; Raven's has an open-ended response page of options with a different presentation style.

Question 4

Which neuropsychological condition is most consistently associated with selective impairment on Block Design despite relatively intact Matrix Reasoning?

Accepted Answer

Right posterior parietal lesions

Answer

Right posterior parietal regions are critical for visuospatial construction; lesions there impair Block Design more than abstract pattern-matching tasks like Matrix Reasoning.

Question 5

In the WAIS-IV standardization sample, the average PRI score for adults aged 65–69 compared to adults aged 20–24 typically shows:

Accepted Answer

A notable decline, reflecting age-related decrements in fluid reasoning

Answer

Fluid intelligence, including perceptual reasoning, typically declines with age, and WAIS-IV norms reflect lower average PRI scores in older age bands.

(WAIS) Wechsler Adult Intelligence Scale Practice Test

(WAIS) Wechsler Adult Intelligence Scale Practice Test

WAIS Perceptual Reasoning Index (PRI) 3