Practical Rasch Measurement - Core Topics

Practical Rasch Measurement - Core Topics

taught by Everett Smith

Aim of Course:

Rasch analysis constructs linear measures from scored observations, such as responses to multiple-choice questions, Likert scales and quality-of-life assessments. This online course, "Practical Rasch Measurement - Core Topics" covers the practical aspects of data setup, analysis, output interpretation, fit analysis, differential item functioning, dimensionality and reporting. Simple test linking and equating designs are addressed. Supporting theory is presented conceptually.

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

WEEK 1: 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
  • Scalograms

Rating Scales, Reliability and Anchoring

  • Partial Credit Model
  • Category Description
  • Standard errors and Reliability
  • Anchoring

DTF, DIF, and dimensionality

  • Differential Test Functioning
  • Differential Item Functioning
  • Investigating Dimensionality


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.

Practical Rasch Measurement - Core Topics

Who Should Take This Course:
Survey researchers, social scientists who use surveys or questionnaires in their work, education assessment analysts and managers.
You should be familiar with introductory statistics.  Try these self tests to check your knowledge.

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.

Options for Credit and Recognition:
Students come to the Institute for a variety of reasons. As you begin the course, you will be asked to specify your category:
  1. No credit - You may be interested only in learning the material presented, and not be concerned with grades or a record of completion.
  2. Certificate - 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. CEUs and/or proof of completion - 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.
  4. Digital Badge - Courses evaluated by the American Council on Education have a digital badge available for successful completion of the course.  
  5. Other options - Specializations, INFORMS CAP recognition, and academic (college) credit are available for some courses
Specialization:  Specializations are an easy way for you to demonstrate mastery of a specific skill in statistics and analytics. This course is part of the Rasch & Item Response Theory Specialization which gives a deep dive into statistical methods for calibration and equating of test instruments.



Course Text:
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.


January 24, 2020 to February 21, 2020 May 22, 2020 to June 19, 2020 October 09, 2020 to November 06, 2020

Practical Rasch Measurement - Core Topics


January 24, 2020 to February 21, 2020 May 22, 2020 to June 19, 2020 October 09, 2020 to November 06, 2020

Course Fee: $589

Do you meet course prerequisites? What about book & software? (Click here to learn more)

We have flexible policies to transfer to another course, or withdraw if necessary (modest fee applies)

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