Wechsler Test Wechsler Test History and Development Questions and Answers 2

Question 1

How many editions of the WAIS have been published as of 2026?

Accepted Answer

5

Answer

Five editions exist: WAIS (1955), WAIS-R (1981), WAIS-III (1997), WAIS-IV (2008), and WAIS-5 (2021).

Question 2

The WAIS-R was published in which year?

Accepted Answer

1981

Answer

The WAIS-R (Wechsler Adult Intelligence Scale–Revised) was published in 1981, about 26 years after the original WAIS.

Question 3

Which edition of the WAIS first restructured the test around four primary index scores (VCI, PRI, WMI, PSI)?

Accepted Answer

WAIS-IV

Answer

The WAIS-IV (2008) replaced the traditional Verbal IQ/Performance IQ structure with four primary index scores: VCI, PRI, WMI, and PSI.

Question 4

What age range does the WAIS-IV assess?

Accepted Answer

16 to 90 years

Answer

The WAIS-IV is designed for individuals aged 16 years 0 months to 90 years 11 months.

Question 5

Which new primary index score was added in the WAIS-5 (2021) compared to the WAIS-IV?

Accepted Answer

Fluid Reasoning Index

Answer

The WAIS-5 added a Fluid Reasoning Index (FRI) as a new primary index alongside the four existing indexes.

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