Number 19 A Modified Frequency Estimation Equating Method for the Common-Item Non-Equivalent Groups Design Tianyou

  title={Number 19 A Modified Frequency Estimation Equating Method for the Common-Item Non-Equivalent Groups Design Tianyou},
  author={Y P Wang and Robert L. Brennan},
Frequency estimation (also called post-stratification) is an equating method employed under the common-item nonequivalent groups design. A modified frequency estimation method is proposed here, based on altering one of the traditional assumptions in frequency estimation in order to correct for equating bias. A simulation study was carried out to compare equating errors for the modified frequency estimation method, the traditional frequency estimation method, and the chained equipercentile… CONTINUE READING


Publications referenced by this paper.
Showing 1-10 of 13 references

Test equating, scaling, and linking: Methods and practices (2nd Ed.)

  • M. J. Kolen, R. L. Brennan
  • 2004
Highly Influential
5 Excerpts

A Comparison of the frequency estimation and chained equipercentile methods under the common-item non-equivalent groups design

  • T. Wang, W. Lee, R. L. Brennan, M. J. Kolen
  • (CASMA Research Report No. 17). Iowa City, Iowa…
  • 2006

An equipercentile version of the Levine Linear Observed-score equating function using the methods of kernel equating

  • A vonDavierA., S. Fournier-Zajac, P. W. Holland
  • Paper presented at the annual meeting of National…
  • 2006

The chain and post-stratification methods for observed-score equating: their relationship to population invariance

  • A. A. von Davier, P. W. Holland, D. T. Thayer
  • Journal of Educational Measurement,
  • 2004

Obtaining a common scale for item response theory item parameters using separate versus concurrent estimation in the common-item equating design

  • B. A. Hanson, A. A. Beguin
  • Applied Psychological Measurement,
  • 2002

Psychometric properties of scale scores and performance levels for performance assessment using polytomous IRT

  • T. Wang, M. J. Kolen, D. J. Harris
  • Journal of Educational Measurement,
  • 2000

A comparison of two equipercentile equating methods for common item equating

  • D. J. Harris, M. J. Kolen
  • Educational and Psychological Measurement,
  • 1990
1 Excerpt

Similar Papers

Loading similar papers…