15 Questions
What is alternate forms reliability?
A measure of consistency between two tests that are not based on the same items
Why is alternate forms reliability often considered impossible in practice?
Because the two tests are not based on the same items
What is a potential issue with using alternate forms reliability?
Carry-over effects
Which of the following is a potential carry-over effect of giving children Test 1 and then Test 2 on consecutive days?
Children might gain self-confidence if they did well on Test 1
Why is it difficult to achieve alternate forms reliability?
Because it is impossible to create two tests that are truly equivalent
What is a potential consequence of carry-over effects on the correlation between Test 1 and Test 2 scores?
The correlation might be weaker than expected
Which of the following is a key assumption of test-retest reliability?
The test should be administered on two different occasions
What is the main advantage of test-retest reliability over parallel forms reliability?
It only requires one test to be created
What is the main assumption of test-retest reliability regarding the construct of interest?
It is a stable construct that does not change over time
What is the potential consequence of administering the same test twice without changing any of the items?
Increased susceptibility to practice effects
Under what circumstances might it be possible to assume equal error variances in a reliability study?
When participants are tested under the same conditions
What is the potential consequence of assuming equal error variances when they are not actually equal in a reliability study?
An overestimation of reliability
What is the typical range of time intervals used in most test-retest studies?
2 to 8 weeks
How does the length of the test-retest interval affect the correlation between scores?
It affects the magnitude of the correlation
What is the main limitation of the test-retest approach to the estimation of reliability, thus causing it to be called a "stability coefficient"?
We can never really know how stable a construct is, so cannot break up the 'error variance' into true score changes and genuine error variance.
Test your knowledge on alternate forms reliability with this quiz! Learn about the differences between alternate forms reliability and parallel forms reliability, as well as the potential challenges and limitations of using alternate forms reliability in practice. Keywords: alternate forms reliability, parallel forms reliability, true scores, carry-over effects, limitations.
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