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SUMMARY:Multidimensional IRT models and their applications to psychologica
 l testing - Igor Menezes (University of Cambridge)
DTSTART:20170301T133000Z
DTEND:20170301T173000Z
UID:TALK71237@talks.cam.ac.uk
CONTACT:Luning Sun
DESCRIPTION:Whether you are student\, a professional or a patient in a hos
 pital\, it is almost certain that at some point in your life you have had 
 the opportunity to sit for an exam or answer a questionnaire. But have you
  ever wondered\, for instance\, if you had a better vocabulary you could h
 ave answered a reading item faster\, or maybe if the type of questions wer
 e presented in a different way your performance could be different? Also\,
  if you agree with the Beck’s depression scale item ‘I can't make deci
 sions at all anymore’\, was your decision made only because you are depr
 essed or could this item also reflect anxiety?\n \nQuestions like these ha
 ve intrigued researchers for decades and the majority of the models curren
 tly in use to investigate the relationship between test item parameters an
 d person individual abilities are based on the assumption that only a sing
 le trait is predominantly measured by a test item (unidimensionality assum
 ption). Hence\, this workshop will provide you with an overview of the tec
 hniques utilized to alternatively measure multidimensional items and show 
 how they are potentially able to increase the measurement accuracy and giv
 e new insights for the development of tests in different fields.\n \nPleas
 e bring your own laptop and install R (http://cran.rstudio.com/) and Rstud
 io (https://www.rstudio.com/products/rstudio/download/) for practicals.
LOCATION:Seminar Room\, Department of Psychology\, Downing Site\, Cambridg
 e
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