WPPSI - Wechsler Preschool and Primary Scale of Intelligence Psychometric Properties and Norms Questions and Answers

Question 1

An examiner notes that the WPPSI-IV Full Scale IQ (FSIQ) has an average internal consistency reliability coefficient of .95. This value indicates which of the following about the FSIQ score?

Accepted Answer

The score is highly consistent and has a low degree of measurement error.

Answer

The score is a valid measure of a child's true intellectual potential.

Answer

The score is directly comparable to achievement test scores.

Answer

The score accurately reflects the performance of the U.S. preschool population.

Question 2

The WPPSI-IV standardization sample was stratified to match the 2010 U.S. Census data. Which set of variables was essential for creating this nationally representative normative group?

Accepted Answer

Age, sex, race/ethnicity, parent education level, and geographic region.

Answer

The child's preschool enrollment status, family income, and number of siblings.

Answer

The child's primary language, parental marital status, and urban vs. rural residence.

Answer

The child's history of developmental milestones and parent's occupation.

Question 3

A child obtains a Visual Spatial Index (VSI) score of 105. The examiner uses the standard error of measurement (SEM) to construct a 95% confidence interval of 97-113 around this score. What is the correct interpretation of this interval?

Accepted Answer

One can be 95% confident that the child's true score for the VSI falls within the range of 97 to 113.

Answer

There is a 95% chance the child will score between 97 and 113 on any future intelligence test.

Answer

The child's visual spatial skills are 95% better than their peers.

Answer

The test is 95% valid for measuring this child's visual-spatial ability.

Question 4

The WPPSI-IV Technical and Interpretive Manual reports studies showing that children diagnosed with an Intellectual Disability score significantly lower on the FSIQ than typically developing children. This finding provides strong evidence for the test's:

Accepted Answer

clinical utility and construct validity.

Answer

test-retest reliability.

Answer

content validity.

Answer

internal consistency.

Question 5

A psychologist is reviewing the test-retest reliability coefficients for the WPPSI-IV index scores over a short interval (e.g., 2-4 weeks). Which of the following is most likely to be true regarding these stability coefficients?

Accepted Answer

The FSIQ will generally have the highest stability, followed by the primary index scores.

Answer

The FSIQ will have lower stability than any of the individual index scores.

Answer

All index scores will have stability coefficients above .95.

Answer

The stability of scores is expected to be perfect, with a coefficient of 1.0.

Question 6

To determine if the difference between a child's Verbal Comprehension Index (VCI) of 112 and their Processing Speed Index (PSI) of 95 is statistically significant, an examiner should compare the 17-point difference to the:

Accepted Answer

critical value provided in the manual's statistical tables.

Answer

child's overall FSIQ score.

Answer

standard deviation of the two index scores.

Answer

average score difference found in the child's grade level.

An examiner notes that the WPPSI-IV Full Scale IQ (FSIQ) has an average internal consistency reliability coefficient of .95.This value indicates which of the following about the FSIQ score?

An examiner notes that the WPPSI-IV Full Scale IQ (FSIQ) has an average internal consistency reliability coefficient of .95.
This value indicates which of the following about the FSIQ score?