Wechsler FSIQ and Index Score Interpretation Questions and Answers

Question 1

A psychologist evaluates a child who obtains a Full Scale IQ (FSIQ) of 92 and a General Ability Index (GAI) of 108. Which of the following is the most likely interpretation of this score pattern?

Accepted Answer

The child has a relative weakness in cognitive abilities measured by the Working Memory and/or Processing Speed indices.

Answer

The GAI is an invalid score and should be disregarded in the interpretation.

Answer

The child's verbal reasoning skills are significantly weaker than their nonverbal reasoning skills.

Answer

The FSIQ is likely an overestimation of the child's true cognitive ability.

Question 2

Under which circumstance is the Full Scale IQ (FSIQ) considered the most interpretable and valid summary of an individual's general intellectual ability?

Accepted Answer

When there is minimal variability and no statistically significant, unusual discrepancies among the primary index scores.

Answer

When the Verbal Comprehension Index (VCI) is significantly higher than the Visual Spatial Index (VSI).

Answer

When the FSIQ score is above the mean of 100.

Answer

When the General Ability Index (GAI) and the Cognitive Proficiency Index (CPI) are identical.

Question 3

An evaluation of an adult client using the WAIS-IV reveals the following index scores: Verbal Comprehension Index (VCI) = 118, Perceptual Reasoning Index (PRI) = 115, Working Memory Index (WMI) = 88, and Processing Speed Index (PSI) = 85. Which statement best describes this client's cognitive profile?

Accepted Answer

The client shows well-developed verbal and non-verbal reasoning skills but may struggle with tasks requiring mental manipulation of information and rapid visual scanning.

Answer

The client's fluid reasoning abilities are a significant area of weakness.

Answer

The client demonstrates globally below-average cognitive functioning.

Answer

The client's performance suggests a primary learning disability in reading comprehension.

Question 4

When an examiner finds a 20-point difference between a client's Verbal Comprehension Index (VCI) and Processing Speed Index (PSI), why is it crucial to consult base rate tables in the test manual?

Accepted Answer

To determine how frequently a discrepancy of that magnitude occurred in the normative sample, which informs its clinical significance.

Answer

To calculate the client's General Ability Index (GAI).

Answer

To confirm the raw scores were converted to scaled scores correctly.

Answer

To determine if the score difference is large enough to invalidate the Full Scale IQ.

Question 5

A 15-year-old is administered the WISC-V and obtains a Full Scale IQ (FSIQ) of 88, with a 95% confidence interval of 82-94. This FSIQ score corresponds to the 21st percentile. Which is the most accurate and complete interpretation of these results?

Accepted Answer

We can be 95% confident that the adolescent's true FSIQ falls within the Low Average range, and their overall performance exceeds that of approximately 21% of their same-age peers.

Answer

The adolescent's performance is at the 21st percentile, meaning they answered 21% of the questions correctly.

Answer

The FSIQ of 88 is in the Average range, and the confidence interval suggests the score could be as high as 94.

Answer

The adolescent's true intellectual ability is definitely 88, which is significantly below average.

Question 6

Which of the following best describes the Full Scale IQ (FSIQ) as derived from the Wechsler intelligence scales?

Accepted Answer

A comprehensive score that represents an individual's current overall level of general cognitive and intellectual functioning.

Answer

An average of an individual's academic achievement scores in reading, writing, and math.

Answer

A score reflecting only an individual's non-verbal and fluid reasoning abilities.

Answer

A measure of an individual's innate, unchangeable intellectual potential.

A psychologist evaluates a child who obtains a Full Scale IQ (FSIQ) of 92 and a General Ability Index (GAI) of 108.Which of the following is the most likely interpretation of this score pattern?

A psychologist evaluates a child who obtains a Full Scale IQ (FSIQ) of 92 and a General Ability Index (GAI) of 108.
Which of the following is the most likely interpretation of this score pattern?