Wide Range Achievement Psychometric Properties Questions and Answers

Question 1

A school psychologist notes that the WRAT-5 manual reports an average internal consistency reliability coefficient (Cronbach's alpha) of .92 for the Word Reading subtest.
What is the most accurate interpretation of this psychometric property?

Accepted Answer

The items within the Word Reading subtest are highly inter-correlated and measure a single, unified construct.

Answer

The Word Reading subtest will produce very similar scores if administered to the same student a week later.

Answer

The Word Reading subtest accurately predicts a student's overall reading ability, including comprehension.

Answer

The scoring of the Word Reading subtest is highly consistent across different examiners.

Question 2

To establish the convergent validity of the WRAT-5, the test developers conducted studies correlating its subtest scores with scores from other well-established achievement tests. Which of the following findings would provide the strongest evidence of convergent validity for the WRAT-5 Math Computation subtest?

Accepted Answer

A high correlation with the WIAT-III Numerical Operations subtest.

Answer

A low correlation with a measure of reading fluency.

Answer

A moderate correlation with a measure of nonverbal intelligence.

Answer

A high correlation with the WRAT-4 Math Computation subtest.

Question 3

The WRAT-5 was standardized on a large, national sample. Which of the following best describes the primary purpose of using such a normative sample in the test's development?

Accepted Answer

To provide a reference group for comparing an individual's performance and deriving standard scores.

Answer

To ensure the test items are of appropriate difficulty for all age groups.

Answer

To prove that the test can be administered reliably by any qualified examiner.

Answer

To eliminate cultural and linguistic bias from all of the test items.

Question 4

An examiner determines that a student's standard score on the Spelling subtest is 88, with a 95% confidence interval of 81-95. The Standard Error of Measurement (SEM) for this subtest at the student's age is 3.5. What does this confidence interval indicate?

Accepted Answer

There is a 95% chance that the student's true spelling ability falls somewhere between a standard score of 81 and 95.

Answer

The student's score is significantly different from 95% of their peers.

Answer

If the student retook the test 100 times, 95 of their scores would be exactly 88.

Answer

The student answered 95% of the spelling items correctly.

Question 5

The existence of two equivalent forms (Blue and Green) for the WRAT-5 is a key psychometric feature. This feature is most directly useful for assessing which type of reliability?

Accepted Answer

Alternate-forms reliability

Answer

Split-half reliability

Answer

Internal consistency

Answer

Inter-rater reliability

Question 6

When evaluating the WRAT-5 for use with a specific clinical population, such as individuals with learning disabilities, which type of validity evidence is most critical for an examiner to consider?

Accepted Answer

Discriminant validity

Answer

Content validity

Answer

Face validity

Answer

Predictive validity

A school psychologist notes that the WRAT-5 manual reports an average internal consistency reliability coefficient (Cronbach's alpha) of .92 for the Word Reading subtest.What is the most accurate interpretation of this psychometric property?

A school psychologist notes that the WRAT-5 manual reports an average internal consistency reliability coefficient (Cronbach's alpha) of .92 for the Word Reading subtest.
What is the most accurate interpretation of this psychometric property?