WINSTEPS & Facets Rasch Software

Winsteps ®
Mike Linacre is top center

Widely used, versatile Rasch Analysis
and Rasch Measurement Software

Probabilistic Measurement Models
Dichotomous Rasch Model (DRM) - 60,000 items by 10,000,000 persons
Rating Scale Model (RSM) & Extended Logistic Model - Andrich - up to 255 rating-scale categories
Partial Credit Model (PCM) - Masters - up to 255 categories per item
Psychometric and Educational test development
IRT Item Response Theory One Parameter Logistic Model 1PL 1-PL - Lord & Birnbaum
Polytomous - Polychotomous - Analysis - Andersen; Sequential Rasch Models - Glas etc.
Rasch Measurement & Fit Analysis - Wright;
Statistical Adjacent Logit, Transition Odds and Continuation Ratio Models
Item bias, DIF and DPF Analysis, Summary Statistics; Stochastic Guttman Biorder Analysis

Many-facet Rasch Measurement - Linacre
Linear Logistic Test Models (LLTM), Paired-Comparison (BTL) Model and more ...

  • WINSTEPS® Rasch measurement software for persons & items. Multiple-Choice (MCQ), Rating Scales (RSM), Partial Credit (PCM), with upto 255 categories per scale. Windows-native, backward compatible with BIGSTEPS. Data size: 60,000 items by 10,000,000 persons. Download free MINISTEP evaluation/student/demo version. Buy from our software sales agents, SWREG or Kagi.
  • Facets Many-facet Rasch measurement (MFRM) for persons, items, judges, tasks, etc.; Linear Logistic Test Model (LLTM); Bradley-Terry-Luce Paired-Comparison Model (BTL). Download free Minifac evaluation/student/demo version. Buy from our software sales agents, SWREG or Kagi

  • Kakushin

    Winsteps and Facets software training
    • Winsteps and Facets User Manuals contain comprehensive instructions, examples and explanations for operating the software and interpreting its output

    • Get started with Winsteps and Facets Tutorial PDFs

    • For Rasch Conferences, Workshops and Training: see "Coming Events" below

    • 3rd Edn of Bond & Fox,"Applying the Rasch Model", will be published on June 16, 2015, with free software, Bond&FoxSteps3

    • Free software, Bond&FoxSteps, with Bond & Fox, 2nd Edn.,"Applying the Rasch Model".

    • Free Winsteps/Ministep Companion to Bond & Fox, 1st Edn.,"Applying the Rasch Model". Step-by-step through their examples using freeware Ministep.

    Rasch Freeware

    • Free Windows-native Ministep student/evaluation/demo version of Winsteps

    • Free Windows-native version of Minifac, the student/evaluation/demo version of Facets

    • Free BIGSTEPS, the DOS-based pre-WINSTEPS Rasch measurement program.

    • Free Facets 3.22, the last DOS-based pre-Windows version of the full Facets program.

    "continual incremental improvement"

    Other Rasch-related Resources

    Demonstration of Rasch methodology
    Rasch measurement converts dichotomous and rating scale observations into linear measures. It links qualitative analysis to quantitative methods.

    Rasch scaling is often classified under item response theory, IRT, or logit-linear models. Rasch specifies how persons, probes, prompts, raters, test items, tasks, etc. must interact statistically through probabilistic measurement models for linear measures to be constructed from ordinal observations. Rasch analysis requires the investigation and quantification of accuracy, precision, reliability, construct validity, quality-control fit statistics, statistical information, linearity, local dependency and unidimensionality. Rasch implements stochastic Guttman ordering, conjoint additivity, Campbell concatenation, sufficiency and infinite divisibility.

    Georg Rasch

    Go to Top of Page
    Go to Winsteps & Facets home Page

    Facets Rasch measurement software. Buy for $149. & site licenses. Freeware student/evaluation download
    Winsteps Rasch measurement software. Buy for $149. & site licenses. Freeware student/evaluation download

    State-of-the-art : single-user and site licenses : free student/evaluation versions : download immediately : instructional PDFs : user forum : assistance by email : bugs fixed fast : free update eligibility : backwards compatible : money back if not satisfied
    Rasch, Winsteps, Facets online Tutorials

    Forum Rasch Measurement Forum to discuss any Rasch-related topic

    To receive the monthly News Email about Winsteps and Facets,
    enter your email address here:

    I want to Subscribe: & click below
    I want to Unsubscribe: & click below

    Please set your SPAM filter to accept emails from welcomes your comments:

    Your email address (if you want us to reply):


    Rasch Publications
    Rasch Measurement Transactions (free, online) Rasch Measurement research papers (free, online) Probabilistic Models for Some Intelligence and Attainment Tests, Georg Rasch Applying the Rasch Model 3rd. Ed., Bond & Fox Best Test Design, Wright & Stone
    Rating Scale Analysis, Wright & Masters Introduction to Rasch Measurement, E. Smith & R. Smith Introduction to Many-Facet Rasch Measurement, Thomas Eckes Invariant Measurement: Using Rasch Models in the Social, Behavioral, and Health Sciences, George Engelhard, Jr. Statistical Analyses for Language Testers, Rita Green
    Rasch Models: Foundations, Recent Developments, and Applications, Fischer & Molenaar Journal of Applied Measurement Rasch models for measurement, David Andrich Constructing Measures, Mark Wilson Rasch Analysis in the Human Sciences, Boone, Stave, Yale
    in Spanish: Análisis de Rasch para todos, Agustín Tristán Mediciones, Posicionamientos y Diagnósticos Competitivos, Juan Ramón Oreja Rodríguez
    Winsteps Tutorials Facets Tutorials Rasch Discussion Groups

    Coming Rasch-related Events
    Sept. 4 - Oct. 16, 2015, Fri.-Fri. On-line workshop: Rasch Applications, Part 1: How to Construct a Rasch Scale (W. Fisher),
    Sept. 9-11, 2015, Wed.-Fri. In-person workshop: Introductory Rasch (A. Tennant, RUMM), Leeds, UK,
    Sept. 14-16, 2015, Mon.-Wed. IACAT Conference: International Association of Computerized Adaptive Testing, Cambridge, UK,
    Sept. 14-16, 2015, Mon.-Wed. In-person workshop: Intermediate Rasch (A. Tennant, RUMM), Leeds, UK,
    Sept. 17-18, 2015, Thur.-Fri. In-person workshop: Advanced Rasch (A. Tennant, RUMM), Leeds, UK,
    Sept. 30 - Oct. 2, 2015, Wed.-Fri. In-person workshop: IRT and Rasch analyses using R and Concerto (C. Gibbons), Cambridge, UK,
    Oct. 16 - Nov. 13, 2015, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps),
    Oct. 23 - Nov. 20, 2015, Fri.-Fri. On-line workshop: Rasch Applications, Part 2: Clinical Assessment, Survey Research, and Educational Measurement (W. Fisher),
    Nov. 13, 2015, Fri. In-person workshop: Rasch Models in Business Administration, in Homage to Professor Pedro Álvarez-Martínez, Tenerife, Canary Islands,
    Dec. 2-4, 2015, Wed.-Fri. In-person workshop: Introductory Rasch (A. Tennant, RUMM), Leeds, UK,
    March 18, 2016, Fri. UK Rasch User Group Meeting, Durham, UK,
    March 23-24, 2016, Wed.-Thur. In-person workshop: Introduction to Rasch using Winsteps (W.Boone), Cincinnati OH,
    April 8-12, 2016, Fri.-Tues. AERA Annual Meeting, Washington DC,
    Aug. 12 - Sept. 9, 2016, Fri.-Fri. On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets),
    The HTML to add "Coming Rasch-related Events" to your webpage is:
    <script type="text/javascript" src=""></script>

    For more information, contact
    Rasch measurement software and publications by e-mail using the comment form above.
    Our current URL is

    Winsteps® is a registered trademark

    The URL of this page is

    Humanitarian thought for the day: Bring back the 276 girls kidnapped in Nigeria on April 15, 2014 over one year ago