WAIS Processing Speed Index (PSI) 2

Question 1

Which WAIS-IV subtest requires the examinee to scan a row of symbols and mark specific target symbols?

Accepted Answer

Symbol Search

Answer

Coding

Answer

Cancellation

Answer

Visual Puzzles

Question 2

The PSI is most sensitive to neurological conditions because processing speed is closely linked to:

Accepted Answer

White matter integrity and neural efficiency

Answer

Crystallized intelligence

Answer

Long-term memory consolidation

Answer

Verbal working memory capacity

Question 3

On the WAIS-IV, a PSI composite score is derived from how many subtests?

Accepted Answer

Two

Answer

One

Answer

Three

Answer

Four

Question 4

A 45-year-old shows a large discrepancy between a high VCI and a low PSI. Which explanation is LEAST likely?

Accepted Answer

Innate low verbal ability

Answer

Early-stage dementia affecting processing speed

Answer

Fine motor slowing unrelated to cognition

Answer

Higher verbal crystallized knowledge accumulated over time

Question 5

Which factor does the Cancellation subtest measure that Coding does NOT primarily emphasize?

Accepted Answer

Visual scanning and selective attention

Answer

Graphomotor speed

Answer

Paired-associate learning

Answer

Auditory processing

Question 6

PSI scores tend to show the steepest age-related decline beginning around which decade of life?

Accepted Answer

50s–60s

Answer

20s

Answer

30s

Answer

70s–80s

Question 7

In the WAIS standardization sample, which group consistently earns the highest average PSI scores?

Accepted Answer

Adults aged 20–24

Answer

Adults aged 65–69

Answer

Adults aged 45–54

Answer

Adults aged 75–90