Bond & Fox (2001) Applying the Rasch Model ...
Chapter 3: Developmental Pathway
You will need to read the text of the book to understand these examples.
Official authors' website: Bond & Fox
EXCEL Bubble Plot
B&F Figure 3.1 paralleled p. 12
No dataset is provided for this, so we will perform a parallel analysis using the Knox Cube Test data.
To produce a plot like Fig. 3.1, go to the "Plots" pull-down menu, and select "Bubble chart".
Up the Fig. 3.1 pathway
Click on the "Output Tables" pull-down menu
This map has the vertical direction of the Developmental Pathway. At the left are the people. Ric(k) and Sus(an)are the most developed. Don and Hel(en) are the least developed.
On the right are the items, shown by their labels. In the Knox Cube Test, children are asked to tap on 4 wooden blocks in particular orders. The item labels indicate the order. The most difficulty item is at the top, 4-1-3(-4-2-1-4). The easiest items are at the bottom, 1-2-4, 1-2 and 2-3.
People are aligned with the items, e.g., Ber(t) with 1-4-3(-2-4), on which they have a 50% chance of success.
Across the Fig. 3.1 pathway
Fig. 3.1 uses a t fit statistic for its x-axis. This is probably a transformation of the information-weighted chi-square statistic, so it would be the "standardized infit statistic" reported by Ministep.
Comment: Since it is the size, rather than the statistical significance, of misfit which distorts measurement, Ministep users are encouraged to focus on the mean-square rather than the standardized forms of the misfit statistics.
To produce a picture of the fit, to parallel the x-axis in Fig. 3.1, we need to tell Ministep
to produce a non-standard sub-table.
These instructions, Chart=Yes and Mnsq=No, could have been put in your control file, just as we did with Pdfile=*
If, at any time, you wonder what is the setting of a control instruction,
"Output Tables" pull-down menu, "17. KID measure"
"Output Tables" pull-down menu, "13. TAP measure"
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|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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|Jan. 5 - Feb. 2, 2018, Fri.-Fri.||On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com|
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|Jan. 22-24, 2018, Mon-Wed.||In-person workshop: Rasch Measurement for Everybody en español (A. Tristan, Winsteps), San Luis Potosi, Mexico. www.ieia.com.mx|
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|June 29 - July 27, 2018, Fri.-Fri.||On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps), www.statistics.com|
|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" www.promsociety.org|
|Aug. 10 - Sept. 7, 2018, Fri.-Fri.||On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets), www.statistics.com|
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|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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