SANCHQ= anchor structures interactively = No

If your system is interactive, steps to be anchored can be entered interactively by setting SANCHQ=Y before the &END line. If you specify this, you will be asked if you want to anchor any steps. If you respond "yes", it will ask if you want to read these anchored items from a file; if you answer "yes" it will ask for the file name and process that file in the same manner as if SAFILE= had been specified. If you answer "no", you will be asked to enter the step measures (found in Table 3).


If there is only one rating (or partial credit) scale, enter the category numbers for which the Rasch-Andrich thresholds are to be anchored, one at a time, along with their logit (or user-rescaled by USCALE=) Andrich threshold (structure measure) calibrations. Bypass categories without measures. Enter 0 where there is a measure of "NONE". When you are finished, enter -1 in place of the category number.


If there are several rating (or partial credit) scales, enter one of the item numbers for each rating (or partial credit) scale, then the Andrich thresholds corresponding to its categories. Repeat this for each category of an item for each rating (or partial credit) scale. Enter 0 where there is a Andrich Threshold for a category of "NONE". Entering 0 as the item number completes anchoring.


Example 1: You are doing a number of analyses, anchoring the common rating (or partial credit) scale to different values each time. You want to enter the numbers at your PC:



You want to anchor items 4 and 8.

Winsteps asks you:



   respond NO(Enter)


respond 2(Enter) (the first category Rasch-Andrich threshold to be anchored)

INPUT VALUE AT WHICH TO ANCHOR Rasch-Andrich threshold:

respond 0(Enter) (the first anchor value)

INPUT Rasch-Andrich threshold TO ANCHOR (-1 TO END): 4(Enter)

INPUT VALUE AT WHICH TO ANCHOR Rasch-Andrich threshold:-1.5(Enter)

INPUT Rasch-Andrich threshold TO ANCHOR (-1 TO END): 6(Enter)

INPUT VALUE AT WHICH TO ANCHOR Rasch-Andrich threshold:1.5(Enter)

INPUT Rasch-Andrich threshold TO ANCHOR (-1 TO END): -1(Enter) (to end anchoring)


Example 2: You wish to enter the Andrich Thresholds for several rating scales, each comprising a grouping of items: SANCHQ=Y


Winsteps asks you:

DO YOU WANT TO ANCHOR ANY Rasch-Andrich thresholdS? YES(Enter)


Item 1 represents the first grouping of items, sharing a common rating scale:


INPUT Rasch-Andrich threshold TO ANCHOR (-1 TO END): 0 bottom category

INPUT VALUE AT WHICH TO ANCHOR Rasch-Andrich threshold: 0 "NONE"


INPUT Rasch-Andrich threshold TO ANCHOR (-1 TO END): 1

INPUT VALUE AT WHICH TO ANCHOR Rasch-Andrich threshold: -0.5


INPUT Rasch-Andrich threshold TO ANCHOR (-1 TO END): 2

INPUT VALUE AT WHICH TO ANCHOR Rasch-Andrich threshold: 0.5

Item 8 represents the second grouping of items, sharing a common rating scale:


INPUT Rasch-Andrich threshold TO ANCHOR (-1 TO END): 0 bottom category

When all are anchored, enter 0 to end:


Help for Winsteps Rasch Measurement Software: Author: John Michael Linacre

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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
Winsteps Tutorials Facets Tutorials Rasch Discussion Groups



Coming Rasch-related Events
April 10-12, 2018, Tues.-Thurs. Rasch Conference: IOMW, New York, NY,
April 13-17, 2018, Fri.-Tues. AERA, New York, NY,
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),
Sept. 3 - 6, 2018, Mon.-Thurs. IMEKO World Congress, Belfast, Northern Ireland
Oct. 12 - Nov. 9, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps),



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