RCONV= score residual at convergence = 0.1
Scores increment in integers so that 0.1 is about as precise a recovery of observed data as can be hoped for.
Specifies what value the largest score residual, corresponding to any person measure or item calibration, must be less than in the iteration just completed for iteration to cease. The current largest value is listed in Table 0, and displayed on your screen. In large data sets, the smallest meaningful logit change in estimates may correspond to score residuals of several score points. See convergence considerations.
Example: To set the maximum score residual, when convergence will be accepted, at 5 score points and maximum logit change in estimates of .01 logits. Your data consists of the responses of 5,000 students to a test of 250 items.
NI=250 ; 250 items
RCONV=5 ; score residual convergence at 5 score points
LCONV=.01 ; this is the standard.
CONVERGE=Both ;convergence when both RCONV= and LCONV= are met
Help for Winsteps Rasch Measurement Software: www.winsteps.com. Author: John Michael Linacre
|Facets Rasch measurement software.
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Winsteps Rasch measurement software. Buy for $149. & site licenses. Freeware student/evaluation download
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|Forum||Rasch Measurement Forum to discuss any Rasch-related topic|
|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), www.statistics.com|
|Sept. 9-11, 2015, Wed.-Fri.||In-person workshop: Introductory Rasch (A. Tennant, RUMM), Leeds, UK, www.leeds.ac.uk/medicine/rehabmed/psychometric|
|Sept. 14-16, 2015, Mon.-Wed.||IACAT Conference: International Association of Computerized Adaptive Testing, Cambridge, UK, iacat.org|
|Sept. 14-16, 2015, Mon.-Wed.||In-person workshop: Intermediate Rasch (A. Tennant, RUMM), Leeds, UK, www.leeds.ac.uk/medicine/rehabmed/psychometric|
|Sept. 17-18, 2015, Thur.-Fri.||In-person workshop: Advanced Rasch (A. Tennant, RUMM), Leeds, UK, www.leeds.ac.uk/medicine/rehabmed/psychometric|
|Sept. 30 - Oct. 2, 2015, Wed.-Fri.||In-person workshop: IRT and Rasch analyses using R and Concerto (C. Gibbons), Cambridge, UK, www.psychometrics.cam.ac.uk|
|Oct. 16 - Nov. 13, 2015, Fri.-Fri.||On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com|
|Oct. 23 - Nov. 20, 2015, Fri.-Fri.||On-line workshop: Rasch Applications, Part 2: Clinical Assessment, Survey Research, and Educational Measurement (W. Fisher), www.statistics.com|
|Nov. 13, 2015, Fri.||In-person workshop: Rasch Models in Business Administration, in Homage to Professor Pedro Álvarez-Martínez, Tenerife, Canary Islands, www.institutos.ull.es|
|Dec. 2-4, 2015, Wed.-Fri.||In-person workshop: Introductory Rasch (A. Tennant, RUMM), Leeds, UK, www.leeds.ac.uk/medicine/rehabmed/psychometric|
|March 18, 2016, Fri.||UK Rasch User Group Meeting, Durham, UK, www.rasch.org.uk|
|March 23-24, 2016, Wed.-Thur.||In-person workshop: Introduction to Rasch using Winsteps (W.Boone), Cincinnati OH, raschmeasurementanalysis.com|
|April 8-12, 2016, Fri.-Tues.||AERA Annual Meeting, Washington DC, www.aera.net|
|Aug. 12 - Sept. 9, 2016, Fri.-Fri.||On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets), www.statistics.com|
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