How to calculate test retest
[DOC File]Reliability Analysis
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Test-retest reliability. The calculation of test-retest reliability is straightforward. The same test is administrated on two occasions to the same individuals under the same conditions. This yields two scores for each person and the correlation between these two sets of scores is the test-retest …
[DOC File]Radford University
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1. Calculate the test retest reliability. 2. Calculate the split-half reliability for time 1 and time 2 separately. Use the Spearman-Brown Prophesy formula to estimate the reliability for the whole test. Note: ignore the fact that the # of odd and even variables are not equal. 3.
[DOC File]PSY 395 Lab #2 Norms and Reliability
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- test-retest – consistency of test scores when the same test is taken at two different times – consistency of scores over time. We find this by correlating the score of the test taken at time 1 with the score of the test taken at time 2. - internal consistency (alpha) – consistency of a test across its items.
[DOC File]Reliability
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Test-retest (this week and next week) Interrater (this week) Acceptable levels of reliability: Reliability estimates are like correlations, and the highest correlation …
[DOC File]This interactive teaching tool uses MS Excel to illustrate ...
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Test-Retest (Stability) 10 Equivalence 11. Split-Halves 12. Spearman-Brown 13. Notes: *Depending on the Excel version you’re using, the screenshots in this document may look different from the file you’ll view on your computer. *The electronic file was created in Excel version 2003.
[DOC File]The 6-Part Story Method:
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Test-retest stability: Pessimism/failure scale items: Validity of P/F scale: No significant difference in the means from the clinician group and the group of patients without a …
[DOC File]Chapter 1 – Categorizing Psychological Tests
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The test–retest method compares the scores of the same test takers taking the same test at two different times This method is appropriate when the test takers have not changed on the ability, trait, or attitude the test measures The alternate forms method compares the scores of the same test takers on two equivalent forms of the test taken at ...
[DOC File]VALIDITY AND RELIABILITY - Purdue University
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Test-retest, equivalent forms and split-half reliability are all determined through correlation. Test-retest Reliability: Test-retest reliability is the degree to which scores are consistent over time. It indicates score variation that occurs from testing session to testing session as a result of errors of measurement.
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