JSM 2015 Online Program

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Legend: Washington State Convention Center = CC, Sheraton Seattle = S, Grand Hyatt = GH and The Conference Center = TCC
* = applied session       ! = JSM meeting theme

Activity Details

CE_31T Wed, 8/12/2015, 10:00 AM - 11:45 AM S-Grand Ballroom A
Analyzing Item Responses with the IRT Procedure: An Introduction with Applications (ADDED FEE) — Professional Development Computer Technology Workshop
Item response theory (IRT) is concerned with efficient scale development and accurate subject scoring. You design scale items to measure various abilities (e.g., math ability), traits (e.g., extraversion), or behavioral characteristics (e.g., purchasing tendency). Responses to scale items can be binary (e.g., correct or incorrect responses in ability tests) or ordinal (e.g., degree of agreement on Likert scales). Traditionally, IRT models have been applied successfully to analyze these types of data in psychological assessments and educational testing. More recently, IRT models have become popular in fields such as quality-of-life research, patient-report-outcome research, and marketing research. This workshop starts with an overview of IRT models such as Rasch, 1PL, and graded response, and then demonstrates their applications with real-data examples. This workshop shows how to use the newly developed IRT procedure (SAS/STAT® 13.1 or later) to calibrate items, interpret item characteristics, and score subjects. Finally, this workshop explains how the applications of IRT models can help develop better scales and improve subject scoring.
Instructor(s): Xinming An, SAS Institute

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