Rasch - Further

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Practical Rasch Measurement - Further Topics

taught by Everett Smith

Aim of Course:

Continues the exploration of Rasch theory and its application in the Winsteps software begun in Practical Rasch Measurement-Core Topics. The visual step-by-step tutorial propels you along the road to success. This online course, "Practical Rasch Measurement - Further Topics" introduces exciting new topics and delves into earlier topics more deeply. Meaningful findings always require careful screening of data, and may require judicious data selection and editing. Even the most profound findings are ignored by decision-makers unless they are presented clearly, powerfully and briefly. In accord with these precepts, you are guided toward successfully analyzing data and communicating your findings.

This course may be taken individually (one-off) or as part of a certificate program.

Course Program:

WEEK 1: Analysis of Dichotomous Data

  • Winsteps software installation and operation
  • Analysis with missing data
  • Correlations and local fit-statistics
  • Item-person maps
  • Estimating measures from dichotomous data

WEEK 2: Analysis of Polytomous Data

  • Importing data from SPSS, SAS, Stata, Excel and more
  • Rescoring data
  • Polytomous models
  • Polytomous estimation
  • Average measures and category thresholds

WEEK 3: Investigating Text Functioning

  • Subtotals
  • Differential Item Functioning
  • Dimensionality

WEEK 4: Test Equating

  • Test equating: separate and concurrent
  • Prettifying output


Homework in this course consists of short answer questions to test concepts.

In addition to assigned readings, this course also has supplemental readings available online, and an end of course data modeling project.

Practical Rasch Measurement - Further Topics

Who Should Take This Course:

Survey researchers, social scientists who use surveys or questionnaires in their work, education assessment analysts and managers.




Organization of the Course:

This course takes place online at the Institute for 4 weeks. During each course week, you participate at times of your own choosing - there are no set times when you must be online. Course participants will be given access to a private discussion board. In class discussions led by the instructor, you can post questions, seek clarification, and interact with your fellow students and the instructor.

At the beginning of each week, you receive the relevant material, in addition to answers to exercises from the previous session. During the week, you are expected to go over the course materials, work through exercises, and submit answers. Discussion among participants is encouraged. The instructor will provide answers and comments, and at the end of the week, you will receive individual feedback on your homework answers.

Time Requirement:
About 15 hours per week, at times of  your choosing.

Students come to the Institute for a variety of reasons. As you begin the course, you will be asked to specify your category:

  1. You may be interested only in learning the material presented, and not be concerned with grades or a record of completion.
  2. You may be enrolled in PASS (Programs in Analytics and Statistical Studies) that requires demonstration of proficiency in the subject, in which case your work will be assessed for a grade.
  3. You may require a "Record of Course Completion," along with professional development credit in the form of Continuing Education Units (CEU's).  For those successfully completing the course,  CEU's and a record of course completion will be issued by The Institute, upon request.

Course Text:

All necessary study material is provided online by the instructor. Helpful additional study material can be found in the book Introduction to Rasch Measurement (Smith & Smith, Eds., 2004, JAM Press). The text can be ordered directly from the publisher, JAM Press.


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.

Practical Rasch Measurement - Further Topics

June 30, 2017 to July 28, 2017June 29, 2018 to July 27, 2018

Course Fee: $589