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ERIC Number: EJ876711
Record Type: Journal
Publication Date: 2010
Pages: 23
Abstractor: As Provided
Reference Count: 22
ISSN: ISSN-0022-0655
Linking Response-Time Parameters onto a Common Scale
van der Linden, Wim J.
Journal of Educational Measurement, v47 n1 p92-114 Spr 2010
Although response times on test items are recorded on a natural scale, the scale for some of the parameters in the lognormal response-time model (van der Linden, 2006) is not fixed. As a result, when the model is used to periodically calibrate new items in a testing program, the parameter are not automatically mapped onto a common scale. Several combinations of linking designs and procedures for the lognormal model are examined that do map parameter estimates onto a common scale. For each of the designs, the standard error of linking is derived. The results are illustrated using examples with simulated data.
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A