Welcome to the memories page for IMPS 2011.
If you were able to attend this conference, we hope you found it both educational and enjoyable.
If you were not able to attend this conference, we hope to see you at future ones!
The main site is still is available here, and the program is here.
We would like to extend our sincere congratulations all of our prize winners for 2011.
Best Dissertation: Anna Brown
How IRT Can Solve Problems of Ipsative Data
Multidimensional forced-choice questionnaires can reduce the impact of numerous response biases typically associated with Likert scales. However, if scored with traditional methodology these instruments produce ipsative data, which has psychometric problems, such as constrained total test score and negative average scale inter-correlation. Ipsative scores distort scale relationships and reliability estimates, and make interpretation of scores problematic. This research demonstrates how Item Response Theory (IRT) modeling may be applied to overcome these problems. A multidimensional IRT model for forced-choice questionnaires is introduced, which is suitable for use with any forced-choice instrument composed of items fitting the dominance response model, with any number of measured traits, and any block sizes (i.e. pairs, triplets, quads etc.). The proposed model is based on Thurstone's framework for comparative data. Thurstonian IRT models are normal ogive models with structured factor loadings, structured uniquenesses, and structured local dependencies. These models can be straightforwardly estimated using structural equation modeling (SEM) software Mplus. Simulation studies show how the latent traits are recovered from the comparative binary data under different conditions. The Thurstonian IRT model is also tested with real participants in both research and occupational assessment settings. It is concluded that when the recommended design guidelines are met, scores estimated from forced-choice questionnaires with the proposed methodology reproduce the latent traits well.
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Best Poster: Hsuan-Po Wang
Invariance of Equating Functions Across Gender Groups of the Taiwan Assessment of Student Achievement
by Hsuan-Po Wang, Yu-Ju Lu, Bor-Chen Kuo, and Chien-Ming Cheng,
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Best Junior Oral Presentation: Margot Bennink
Presentation title: Predicting Discrete Macro-Level Outcome Variables with Micro-Level Explanatory Variables: A Latent Class Approach
by Margot Bennink
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Our thanks to everyone who came to and participated in IMPS
2011!
We hope you had a great time, and hope to see you again at IMPS 2012.
If you wish to sign up for the IMPS announcements list you can do
so here.
If you would like to
share pictures you took at the conference you can either email them to pmetrika@uncg.edu
or send them to:
Gwen Exner, Psychometric Society Webmaster
University of North Carolina-Greensboro
210 Curry Building
P.O. Box 26170
Greensboro, NC 27402-6170
USA
Some pictures may be cropped and posted on the main page, and others
will be posted in galleries hosted by the Psychometric Society
website. If you happen to know the name(s) of the people in the pictures, or can tell me when and where
the picture was taken, that information would be very helpful and will
be posted along with the picture.
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