File definition keywords

$Input = name  (input data file)

The name of the input flat file. This file has your original data.

E.g., $Input=KCT.RAW


$Output = name  (Facets-format data)

The name of the output Facets data file. This file has your data transformed into Facets format. E.g., $Output=KCTDAT.txt


$Spoutput = name  (Facets specifications)

The name of the output Facets keyword file. This has most of the specifications Facets needs to analyze the data,, but it is incomplete, and will need further editing.

 E.g., $Spoutput=KCT.SP


$Spinput = name  (previous Facets specifications)

The name of an input specification file in Facets format. Facform uses this to assign numbers to elements. The input specifications will be copied into the output specification file. E.g, $Spinput=KCTBANK

Use this to insure that elements are always assigned the same numbers, and to carry across anchor values, model specifications etc.


$Given = Yes  (all labels given in $Spinput file)

This keyword instructs Facform that all elements of every facet have been specified in the $Spinput= file so there is no need to analyze the data file for new ones.

This keyword can speed up subsequent runs of Facform when specifying the Facets specifications produced by an earlier Facform run as a $Spinput file. E.g.,

$Spinput=MEASURES   specifications from earlier run

 $Given=Yes       those specifications include all elements


$Separator = "value" (separator character in a variable length or CSV file)

This keyword defines the character that separates fields in the raw data file. Use it with the $C() expression. For Tab separators, use the $T() expression or $Sep=Tab.

$Sep =";" ; separators are semicolons

$Sep =" "   ; separators are one or more spaces.

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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 with Raters and Rating Scales: Rasch Models for Rater-Mediated Assessments, George Engelhard, Jr. & Stefanie Wind 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
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Coming Winsteps & Facets Events
May 22 - 24, 2018, Tues.-Thur. EALTA 2018 pre-conference workshop (Introduction to Rasch measurement using WINSTEPS and FACETS, Thomas Eckes & Frank Weiss-Motz),
May 25 - June 22, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps),
June 27 - 29, 2018, Wed.-Fri. Measurement at the Crossroads: History, philosophy and sociology of measurement, Paris, France.,
June 29 - July 27, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps),
July 25 - July 27, 2018, Wed.-Fri. Pacific-Rim Objective Measurement Symposium (PROMS), (Preconference workshops July 23-24, 2018) Fudan University, Shanghai, China "Applying Rasch Measurement in Language Assessment and across the Human Sciences"
Aug. 10 - Sept. 7, 2018, Fri.-Fri. On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets),
Oct. 12 - Nov. 9, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps),

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