Rasch Measurement – Core Topics
This course will teach you how Rasch analysis constructs linear measures from scored observations. You will learn the practical aspects of data setup, analysis, output interpretation, fit analysis, differential item functioning, dimensionality and reporting.
This course will teach you how Rasch analysis constructs linear measures from scored observations, such as responses to multiple-choice questions, Likert scales and quality-of-life assessments. Students will learn basic concepts and operations including software installation, fit analysis and measurement models, ratings and reliability, and dimensionality.
- Install Winsteps software
- Describe basic test and Rasch measurement concepts
- Conduct simple dichotomous analysis
- Describe and fit the Rasch-Andrich rating scale model
- Account for partial credit
- Develop designs simple test linking and equating
Who Should Take This Course
Survey researchers, social scientists who use surveys or questionnaires in their work, education assessment analysts and managers.
Basic Concepts and Operations
- Winsteps software installation and operation
- Basic measurement and Rasch concepts
- Simple dichotomous analysis
- Constructing data files
Fit Analysis and Measurement Models
- Rasch-Andrich Rating Scale Model
- Quality-control fit statistics
Rating Scales, Reliability and Anchoring
- Partial Credit Model
- Category Description
- Standard errors and Reliability
DTF, DIF, and Dimensionality
- Differential Test Functioning
- Differential Item Functioning
- Investigating Dimensionality
- Skill: Intermediate
- Credit Options: CEU
- Skill: Intermediate
- Credit Options: CEU
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Homework in this course consists of short answer questions to test concepts and an end of course measurement construction project.
Practice tasks are also provided to allow participants the opportunity to practice the concepts being taught with provided data sets.
In addition to assigned readings, this course also has supplemental readings available online.
All necessary study material is provided online by the instructor.
The course will use a time-limited version of Winsteps software available when the course starts. Microsoft Excel is used extensively. Note: Winsteps does not run on native Macintosh OS; you will need to be running Windows.
Literacy, Accessibility, and Dyslexia
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- Color Enhancer (for colorblindness)
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- Color Vision Simulation (native accessibility feature)
- Other native accessibility features instructions