Showing 1 - 2 of 2 Research Library Publications

Examining the Precision of Cut Scores Within a Generalizability Theory Framework: A Closer Look at the Item Effect

Posted: | B. E. Clauser, M. Kane, J. C. Clauser

Journal of Educational Measurement: Volume 57, Issue 2, Pages 216-229

 

This article presents two generalizability-theory–based analyses of the proportion of the item variance that contributes to error in the cut score. For one approach, variance components are estimated on the probability (or proportion-correct) scale of the Angoff judgments, and for the other, the judgments are transferred to the theta scale of an item response theory model before estimating the variance components.

Category:Assessment-Oriented Research, Reliability/Validity

Detecting and Treating Errors in Tests and Surveys

Posted: | M. von Davier

Quality Assurance in Education, Vol. 26 No. 2, pp. 243-262

 

Surveys that include skill measures may suffer from additional sources of error compared to those containing questionnaires alone. Examples are distractions such as noise or interruptions of testing sessions, as well as fatigue or lack of motivation to succeed. This paper aims to provide a review of statistical tools based on latent variable modeling approaches extended by explanatory variables that allow detection of survey errors in skill surveys.

Category:Assessment-Oriented Research, Other