Reliability and Measurement Error in the Presence of Homogeneity

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dc.contributor.authorPike, Cathy King
dc.contributor.authorHudson, Walter W.
dc.date.accessioned2010-12-07T17:51:55Z
dc.date.available2010-12-07T17:51:55Z
dc.date.issued1998
dc.descriptionThis post-peer-review, pre-copyedit version of the article submitted to IUPUI ScholarWorks as part of the OASIS Project. Article reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Permission granted through posted policies on copyright owner’s website or through direct contact with copyright owner.en_US
dc.description.abstractThis paper describes a limitation of using Cronbach's Alpha to estimate reliability when using a sample with homogeneous responses in the measured construct. More specifically, it describes the risk of falsely concluding that a new instrument may have poor reliability and demonstrates the use of an alternate statistic that may serve as a cushion against such errors. Data from two validation studies are used to illustrate the utility of the new statistic, referred to as R-Alpha or Relative Alpha. Included is a discussion of the limitations and appropriate use of the statistic in validating multi-item tests, assessment scales, and inventories.en_US
dc.identifier.citationPike, Cathy King and Walter W. Hudson. "Reliability and measurement error in the presence of homogeneity." Journal of Social Service Research 24, no. 1/2 (1998): 149-163.en_US
dc.identifier.citationPike, Cathy King and Walter W. Hudson. "Reliability and measurement error in the presence of homogeneity." December 7, 2010. Available from IUPUI ScholarWorks. http://hdl.handle.net/1805/2325.en_US
dc.identifier.issn0148-8376
dc.identifier.urihttps://hdl.handle.net/1805/2325
dc.language.isoen_USen_US
dc.publisherFor the final version of the article published in the print edition of the journal as cited above, please click on the following doi link: [LINK]http://dx.doi.org/10.1300/J079v24n01_07[/LINK].[BREAK]Access to the original article may require subscription and authorized logon ID/password. IUPUI faculty/staff/students please check University Library resources before purchasing an article. Questions on finding the original article via our databases? Ask a librarian: [LINK]http://www.ulib.iupui.edu/research/askalibrarian[/LINK].en_US
dc.subjectAssessmenten_US
dc.subjectCronbach’s alphaen_US
dc.subjectMeasurementen_US
dc.subjectReliabilityen_US
dc.subjectVarianceen_US
dc.subject.lcshSampling (Statistics)en_US
dc.subject.lcshResearch -- Methodologyen_US
dc.titleReliability and Measurement Error in the Presence of Homogeneityen_US
dc.typeArticleen_US
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