Wechsler Test Wechsler Processing Speed Index 4

Question 1

The PSI composite (index) score uses which mean and standard deviation?

Accepted Answer

Mean 100, SD 15

Answer

Index/composite scores follow the standard mean of 100 with an SD of 15.

Question 2

Which factor is LEAST likely to genuinely lower a person's processing speed performance?

Accepted Answer

High vocabulary knowledge

Answer

Strong vocabulary knowledge does not impair the visual-motor speed PSI measures.

Question 3

In a clinical profile, a large gap where PSI is much lower than Verbal Comprehension might prompt the examiner to consider what?

Accepted Answer

Whether the Full Scale IQ adequately represents overall ability

Answer

A wide index discrepancy can make the FSIQ less interpretable as a single summary of ability.

Question 4

Which everyday skill is most conceptually related to processing speed?

Accepted Answer

Quickly proofreading a page for typos

Answer

Rapid visual scanning like proofreading mirrors the quick perception PSI assesses.

Question 5

What should an examiner do if an examinee has a visual acuity problem before administering PSI subtests?

Accepted Answer

Ensure corrective lenses are worn or note the limitation

Answer

Uncorrected vision problems invalidate PSI results, so correction or documentation is needed.

Wechsler Test Practice Test