Core Structure Flashcards

Which two subtests form the core of the WAIS-IV Processing Speed Index?

Answer: Coding and Symbol Search

Coding and Symbol Search are the two core subtests that contribute to the Processing Speed Index (PSI).

What term describes a subset of WAIS subtests administered when time is limited but a reliable estimate of general ability is still needed?

Answer: Abbreviated battery

An abbreviated battery uses a reduced set of subtests to estimate FSIQ when full administration is not feasible.

The WAIS-IV replaced which earlier version of the instrument?

Answer: WAIS-III

The WAIS-IV (2008) replaced the WAIS-III (1997), updating norms, floor/ceiling, and factor structure.

Which structural change distinguished WAIS-IV from WAIS-III regarding index scores?

Answer: WAIS-IV eliminated the Perceptual Organization Index and replaced it with the Perceptual Reasoning Index

WAIS-IV replaced the Perceptual Organization Index (POI) of WAIS-III with the Perceptual Reasoning Index (PRI), reflecting updated factor analytic findings.

In the WAIS-IV factor structure, which index score has the highest g-loading and contributes most to FSIQ?

Answer: Verbal Comprehension Index

The Verbal Comprehension Index typically shows the highest g-loading in WAIS-IV factor analyses, reflecting strong association with general intelligence.

What is the standard deviation of WAIS index scores and the Full Scale IQ?

Answer: 15

WAIS index scores and FSIQ use a standard deviation of 15 around a mean of 100, consistent with most modern IQ tests.

Which WAIS-IV subtest requires an examinee to arrange red-and-white blocks to match a printed design?

Answer: Block Design

Block Design requires the examinee to use two-color blocks to reconstruct abstract geometric designs, measuring visuoconstructive ability.