Using Longitudinal Data to Estimate Reliability in the Presence of Correlated Measurement Errors.

Werts, C. E.; And Others

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Peer reviewed

ERIC Number: EJ231182

Record Type: Journal

Publication Date: 1980

Pages: N/A

Abstractor: N/A

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Using Longitudinal Data to Estimate Reliability in the Presence of Correlated Measurement Errors.

Werts, C. E.; And Others

Educational and Psychological Measurement, v40 n1 p19-29 Spr 1980

Test-retest correlations can lead to biased reliability estimates when there is instability of true scores and/or when measurement errors are correlated. Using three administrations of the Test of Standard Written English and essay ratings, an analysis is demonstrated which separates true score instability and correlated errors. (Author/BW)

Descriptors: College Freshmen, Error of Measurement, Essay Tests, Higher Education, Multiple Choice Tests, Statistical Bias, Test Reliability, True Scores

Publication Type: Journal Articles; Reports - Research

Education Level: N/A

Audience: N/A

Language: English

Sponsor: N/A

Authoring Institution: N/A

Identifiers - Assessments and Surveys: Test of Standard Written English

Grant or Contract Numbers: N/A

Author Affiliations: N/A