Psychometric Properties of Scale Scores and Performance Levels for Performance Assessments Using Polytomous IRT.

Wang, Tianyou; Kolen, Michael J.; Harris, Deborah J.

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Peer reviewed

ERIC Number: EJ615865

Record Type: Journal

Publication Date: 2000

Pages: N/A

Abstractor: N/A

ISBN: N/A

ISSN: ISSN-0022-0655

EISSN: N/A

Psychometric Properties of Scale Scores and Performance Levels for Performance Assessments Using Polytomous IRT.

Wang, Tianyou; Kolen, Michael J.; Harris, Deborah J.

Journal of Educational Measurement, v37 n2 p141-62 Sum 2000

Describes procedures for calculating conditional standard error of measurement (CSEM) and reliability of scale scores and classification of consistency of performance levels. Applied these procedures to data from the American College Testing Program's Work Keys Writing Assessment with sample sizes of 7,097, 1,035, and 1,793. Results show that the procedures produce quite stable estimates. (SLD)

Descriptors: Adults, Classification, Error of Measurement, Item Response Theory, Performance Based Assessment, Psychometrics, Reliability, Scores, Writing Tests

Publication Type: Journal Articles; Reports - Descriptive; Reports - Evaluative

Education Level: N/A

Audience: N/A

Language: English

Sponsor: N/A

Authoring Institution: N/A

Identifiers - Assessments and Surveys: Work Keys (ACT)

Grant or Contract Numbers: N/A