Wechsler Test Wechsler Processing Speed Index 2

Question 1

Which two core subtests make up the Processing Speed Index (PSI) on the WAIS-IV?

Accepted Answer

Symbol Search and Coding

Answer

The WAIS-IV PSI is composed of the Symbol Search and Coding subtests.

Question 2

What cognitive ability does the Processing Speed Index primarily measure?

Accepted Answer

Speed of mental and graphomotor processing of simple visual information

Answer

PSI reflects how quickly one processes simple visual information and produces a motor response.

Question 3

On the Coding subtest, what is the examinee asked to do?

Accepted Answer

Copy symbols paired with numbers using a key, as fast as possible

Answer

Coding requires copying symbols matched to numbers using a reference key within a time limit.

Question 4

What does the Symbol Search subtest require the examinee to do?

Accepted Answer

Indicate whether target symbols appear in a search group

Answer

In Symbol Search the examinee scans a search group to decide if a target symbol is present.

Question 5

A very low PSI score with average scores on other indexes most often suggests difficulty with which area?

Accepted Answer

Speed and efficiency of visual-motor performance

Answer

An isolated low PSI typically points to slowed visual-motor processing efficiency rather than reasoning deficits.

Wechsler Test Practice Test