Flashcards
AGEE 644 Class 6
Cards in this deck (13)
- 1This defines the trustworthiness of an instrument, pertains to consistency, repeatability, dependability, and generalizability.Reliability
- 2Pertains exclusively to random measurement error, is inversely related to the amount of random error in the scores produced by the instrument.Reliability
- 3What are three sources of random error?The individual being measured
Administration of the measuring instrument
The instrument itself (ie number of questions) - 4What are four ways to test reliability?Test retest
Parallel forms
Split Half
Cronbachs Alpha - 5Estimates reliability based on the correlation of scores from an instrument administered to the same respondents on two different occasions. Coefficient of stability.Test-Retest
- 6Estimates reliability from the correlation between scores on two versions of the same test administered to the same respondents. Coefficient of equivalence.Parallel (alternative) forms
- 7Estimates reliability by taking the total items on an instrument an splitting them in half and the scores on the two halves are correlated to estimate reliabilitySplit Half Reliability Test
- 8In a split half, the correlation between the two halves is statistically corrected by the _____________ to estimate reliability for the total instrumentSpearman Brown formula
- 9Two problems with split half1. Reduces the number of questions
2. Correlations between halves will differ depending on how the items are divided into halves - 10__________ ________ concerns the idea that single items on a multiple item instrument converge to measure the underlying construct the instrument purports to measureInternal consistency
- 11What are 5 factors that affect reliability?1) Length of test
2) Heterogeneity of group
3) Ability level of group
4) Nature of the variable
5) Objectivity of scoring - 12Procedure used to determine homogeneity for reliability, used when items are scored dichotomouslyKuder-Richardson (K-R 20)
- 13Procedure used to determine homogeneity and has wider implications than the K-R 20, can be used when items are not dichotomousCronbach's Alpha
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- AGEE 644 Flashcards on AGEE 644 Class 6, created by Renee Conneway on 06/03/2018.
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- Renee Conneway
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