WAIS Working Memory Index (WMI) 2

Question 1

Which WAIS-IV subtest requires the examinee to listen to a sequence of letters and numbers, then recall the numbers in ascending order followed by the letters in alphabetical order?

Accepted Answer

Letter-Number Sequencing

Answer

Digit Span

Answer

Arithmetic

Answer

Symbol Search

Question 2

On the WAIS-IV Digit Span subtest, which condition is considered the most sensitive measure of working memory manipulation?

Accepted Answer

Digit Span Sequencing

Answer

Digit Span Forward

Answer

Digit Span Backward

Answer

All conditions equally

Question 3

A clinician notes that an examinee scores significantly higher on Digit Span Forward than Digit Span Backward. What does this discrepancy most likely indicate?

Accepted Answer

Difficulty with active mental manipulation

Answer

Superior crystallized intelligence

Answer

Enhanced phonological loop capacity

Answer

Stronger visuospatial working memory

Question 4

Which component of Baddeley's working memory model is most directly engaged during the WAIS Arithmetic subtest?

Accepted Answer

Central executive

Answer

Visuospatial sketchpad

Answer

Phonological loop

Answer

Episodic buffer

Question 5

The WAIS-IV Arithmetic subtest is classified as a supplemental WMI subtest primarily because:

Accepted Answer

It also loads on verbal comprehension and numerical ability

Answer

It is too easy for most adults

Answer

It measures processing speed rather than working memory

Answer

It cannot be administered to examinees over age 65

Question 6

Which standard score metric is used to express the WAIS-IV Working Memory Index?

Accepted Answer

Composite standard score (mean=100, SD=15)

Answer

T-score (mean=50, SD=10)

Answer

z-score (mean=0, SD=1)

Answer

Scaled score (mean=10, SD=3)

Question 7

When computing the WMI from WAIS-IV core subtests, which two subtests are combined?

Accepted Answer

Digit Span and Letter-Number Sequencing

Answer

Digit Span and Arithmetic

Answer

Letter-Number Sequencing and Arithmetic

Answer

Digit Span and Coding