A problem that arises in bilingual testing is that some persons are partial speakers of two languages, but not totally competent in either. In these cases, the respondent might answer in English sometimes and Spanish sometimes. We ran into this situation in preschool readiness testing with Hispanic children in Florida.
The Woodcock/Muñoz-Sandoval approach (RMT 7:4 p. 329) is designed for first language speakers of different languages. It equates parallel tests, then transforms measures on the non-English language form to their English equivalent. But a simple translation of a test into another language ignores cultural bias - for example, a cross has specific cultural significance for Hispanic preschoolers.
We took a different approach with the Rasch model. We pooled responses from Spanish and English forms and calibrated the items together. Then we used the person "between" (Hispanic students vs. Anglo students) fit statistic provided by IPARM (Smith 1991) to compare Hispanic and English cultural bias on each item, without regard to the language that the student used when responding. Mixed language responses were allowed. Credit was given when the answer was correct in either language.
The person between fit statistic proved more sensitive to bias than the usual fit statistics. We were able to identify items for inclusion, exclusion or editing in a bilingual test, so avoiding the need for equated test versions and equivalent measures. Without this approach, the more or less unpredictable use of two languages simultaneously could render some preschoolers unmeasurable.
Steve Lang 1994 RMT 8:1 p. 343
University of South Florida at St. Petersburg
|Rasch publications in Spanish - Español|
|www.rasch.org/rmt/glosario.htm||Rasch Anàlisis - Glosario Español - Spanish Glossary - Español-Inglés del diccionario - Spanish-English Dictionary - Dr. Agustín Tristàn Lòpez|
|www.rasch.org/diseno.htm||Spanish language introduction to Diseño óptimo de pruebas (Best Test Design)|
|www.rasch.org/spanish.htm||Diseño óptimo de pruebas - Spanish-language book of Best Test Design (Wright & Stone, 1979)|
Bilingual testing. Lang S. Rasch Measurement Transactions, 1994, 8:1 p.343
|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|
|Forum||Rasch Measurement Forum to discuss any Rasch-related topic|
Go to Top of Page
Go to index of all Rasch Measurement Transactions
AERA members: Join the Rasch Measurement SIG and receive the printed version of RMT
Some back issues of RMT are available as bound volumes
Subscribe to Journal of Applied Measurement
Go to Institute for Objective Measurement Home Page. The Rasch Measurement SIG (AERA) thanks the Institute for Objective Measurement for inviting the publication of Rasch Measurement Transactions on the Institute's website, www.rasch.org.
|Coming Rasch-related Events|
|Apr. 14-17, 2020, Tue.-Fri.||International Objective Measurement Workshop (IOMW), University of California, Berkeley, https://www.iomw.org/|
|May 22 - June 19, 2020, Fri.-Fri.||On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com|
|June 26 - July 24, 2020, Fri.-Fri.||On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps), www.statistics.com|
|June 29 - July 1, 2020, Mon.-Wed.||Measurement at the Crossroads 2020, Milan, Italy , https://convegni.unicatt.it/mac-home|
|July - November, 2020||On-line course: An Introduction to Rasch Measurement Theory and RUMM2030Plus (Andrich & Marais), http://www.education.uwa.edu.au/ppl/courses|
|July 1 - July 3, 2020, Wed.-Fri.||International Measurement Confederation (IMEKO) Joint Symposium, Warsaw, Poland, http://www.imeko-warsaw-2020.org/|
|Aug. 7 - Sept. 4, 2020, Fri.-Fri.||On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets), www.statistics.com|
|Oct. 9 - Nov. 6, 2020, Fri.-Fri.||On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com|
|June 25 - July 23, 2021, Fri.-Fri.||On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps), www.statistics.com|
The URL of this page is www.rasch.org/rmt/rmt81k.htm