WINSTEPS & Facets Rasch Software

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
Grouped Rating Scale Model (GRSM)
Many-Facet Rasch Measurement - Linacre
IRT Item Response Theory One Parameter Logistic Model 1PL 1-PL - Lord & Birnbaum
Linear Logistic Test Model (LLTM), Paired-Comparison (BTL) Model
 
Psychometric and Educational test development
Polytomous - Polychotomous - Analysis - Andersen; Sequential Rasch Models - Glas etc.
Rasch Measurement & Fit Analysis - Wright;
Item bias, DIF and DPF Analysis, Summary Statistics, Wright Maps 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.
     
  • 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

  • Kakushin
    "Innovation"

    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.


    Kaizen
    "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.


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    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

     

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    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
    April 26-30, 2017, Wed.-Sun. NCME, San Antonio, TX, www.ncme.org - April 29: Ben Wright book
    April 27 - May 1, 2017, Thur.-Mon. AERA, San Antonio, TX, www.aera.net
    April 29, 2017, Sat., 16:35 to 18:05. NCME Presidents Invitational Symposium: a new book commemorating Ben Wright's life and career, 16:35 to 18:05, San Antonio, TX, www.ncme.org
    May 26 - June 23, 2017, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
    June 30 - July 29, 2017, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps), www.statistics.com
    July 31 - Aug. 3, 2017, Mon.-Thurs. Joint IMEKO TC1-TC7-TC13 Symposium 2017: Measurement Science challenges in Natural and Social Sciences, Rio de Janeiro, Brazil, imeko-tc7-rio.org.br
    Aug. 7-9, 2017, Mon-Wed. In-person workshop and research coloquium: Effect size of family and school indexes in writing competence using TERCE data (C. Pardo, A. Atorressi, Winsteps), Bariloche Argentina. Carlos Pardo, Universidad Catòlica de Colombia
    Aug. 7-9, 2017, Mon-Wed. PROMS 2017: Pacific Rim Objective Measurement Symposium, Sabah, Borneo, Malaysia, proms.promsociety.org/2017/
    Aug. 10, 2017, Thurs. In-person Winsteps Training Workshop (M. Linacre, Winsteps), Sydney, Australia. www.winsteps.com/sydneyws.htm
    Aug. 11 - Sept. 8, 2017, Fri.-Fri. On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets), www.statistics.com
    Aug. 18-21, 2017, Fri.-Mon. IACAT 2017: International Association for Computerized Adaptive Testing, Niigata, Japan, iacat.org
    Sept. 15-16, 2017, Fri.-Sat. IOMC 2017: International Outcome Measurement Conference, Chicago, jampress.org/iomc2017.htm
    Oct. 13 - Nov. 10, 2017, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
    Jan. 5 - Feb. 2, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
    Jan. 10-16, 2018, Wed.-Tues. In-person workshop: Advanced Course in Rasch Measurement Theory and the application of RUMM2030, Perth, Australia (D. Andrich), Announcement
    Jan. 17-19, 2018, Wed.-Fri. Rasch Conference: Seventh International Conference on Probabilistic Models for Measurement, Matilda Bay Club, Perth, Australia, Website
    May 25 - June 22, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
    June 29 - July 27, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps), www.statistics.com
    Aug. 10 - Sept. 7, 2018, Fri.-Fri. On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets), www.statistics.com
    Oct. 12 - Nov. 9, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
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