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Event Details

Item Response Theory

Time: November 4, 2016 to November 5, 2016
Location: Philadelphia
Street: 1515 Market Street
City/Town: Philadelphia
Website or Map: http://statisticalhorizons.co…
Phone: 610 642 1941
Event Type: seminar
Organized By: Statistical Horizons LLC
Latest Activity: Sep 4, 2016

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Event Description

Behavioral, social, educational, biomedical, business, and marketing scientists are frequently involved in the evaluation, development and revision of multiple-component measuring instruments, such as tests, scales, inventories, questionnaires, surveys, self-reports, testlets, subscales, etc. Scores obtained from them are often employed in various analyses addressing substantive research questions. The quality of these instruments and resulting individual parameter estimates determine the extent to which the subsequent analyses and modeling efforts can be trusted. To ensure high quality of the measuring instruments, researchers must carefully study their psychometric properties and engage in possibly multiple revisions of them.

This two-day seminar provides a thorough introduction to Item Response Theory (IRT, Item Response Modeling, IRM), and covers also multiple intermediate level as well as several more advanced topics. Throughout the seminar, numerous empirical examples are utilized from the educational, behavioral, and social sciences. The popular packages Stata and Mplus are used in the examples, along with a detailed discussion of the needed command syntax and interpretation of the resulting output. References to the increasingly popular software flexMIRT are made on several occasions as well as to IRTPRO and the package ‘ltm’ of R, and use of them is made in some of the examples. At the end of the seminar, the participants will also be able to conduct software-based analyses using the modeling methods covered in the course.

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