Metaphysical Rasch

Rasch measurement gives systematic expression to the wider, metaphysical sense of mathematical thinking. The reason why Rasch measurement's actualization of the broader sense of mathematics is important is that "Modern natural science, modern mathematics, and modern metaphysics sprang from the same root of the mathematical in the wider sense" (Heidegger, 1967, p. 97). To the extent that metaphysics can "dig down to the bedrock of its mathematical base and ground" (Heidegger, 1967, p. 98) and explicate, formulate, project, and realize its own will, the project for a postmodern, non-metaphysical science will succeed. The reason why a postmodern science is needed is that modern science is blind to the wider implications of mathematical thinking, even though it was born of them. I contend that Rasch measurement, construed in a way that focuses on the construct and not on playing with numbers, opens the next chapter in the history of Dasein, that mode of being that exists as understanding.

Analytic and Phenomenological Philosophies

Analytical philosophy focuses on logic, rationality, and method at the expense of intuition, imagination, and history. Phenomenology's motto is to return to the things themselves, in the ideal sense of that which persists no matter who perceives it, where it is perceived, or which exemplar of the thing is perceived. Though the term phenomenology has other connotations, it is most frequently used to refer to the work of Husserl, and his students, such as Heidegger, Gadamer, Merleau-Ponty, Sartre, and Ricoeur. Where analytic philosophy places facts in a timeless, valueless void, phenomenology is inherently hermeneutic (interpretative) in recognizing that anything is recognized as something, that one's language, history, culture, socio-economic background, gender, etc. all play a part in making anything at all what it happens to be for you.

There are those who take phenomenological logic to a Heraclitean extreme. They say that communication is impossible because nothing stays the same long enough, or can be understood as the same from everyone's inherently different perspectives, for any two people to share it. We see this as "measurement error", and that these differences are exaggerated far beyond any effect they have in daily life (except when, of course, they aren't, but that's why we need to measure in the first place).

William P. Fisher, Jr.
Louisiana State University Medical Center
New Orleans

Gadamer, Hans-Georg (1989) Truth and Method. New York: Crossroad Publishing.

Heidegger, Martin (1967) What is a Thing? South Bend, Indiana: Regnery.

Metaphysical Rasch.Fisher W.P. Jr. … Rasch Measurement Transactions, 1998, 12:3 p. 652.


Please help with Standard Dataset 4: Andrich Rating Scale Model



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: 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

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Coming Rasch-related Events
June 30 - July 29, 2017, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps), www.statistics.com
July 31 - Aug. 3, 2017, Mon.-Thurs. Joint IMEKO TC1-TC7-TC13 Symposium 2017: Measurement Science challenges in Natural and Social Sciences, Rio de Janeiro, Brazil, imeko-tc7-rio.org.br
Aug. 7-9, 2017, Mon-Wed. In-person workshop and research coloquium: Effect size of family and school indexes in writing competence using TERCE data (C. Pardo, A. Atorressi, Winsteps), Bariloche Argentina. Carlos Pardo, Universidad Catòlica de Colombia
Aug. 7-9, 2017, Mon-Wed. PROMS 2017: Pacific Rim Objective Measurement Symposium, Sabah, Borneo, Malaysia, proms.promsociety.org/2017/
Aug. 10, 2017, Thurs. In-person Winsteps Training Workshop (M. Linacre, Winsteps), Sydney, Australia. www.winsteps.com/sydneyws.htm
Aug. 11 - Sept. 8, 2017, Fri.-Fri. On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets), www.statistics.com
Aug. 18-21, 2017, Fri.-Mon. IACAT 2017: International Association for Computerized Adaptive Testing, Niigata, Japan, iacat.org
Sept. 15-16, 2017, Fri.-Sat. IOMC 2017: International Outcome Measurement Conference, Chicago, jampress.org/iomc2017.htm
Oct. 13 - Nov. 10, 2017, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
Jan. 5 - Feb. 2, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
Jan. 10-16, 2018, Wed.-Tues. In-person workshop: Advanced Course in Rasch Measurement Theory and the application of RUMM2030, Perth, Australia (D. Andrich), Announcement
Jan. 17-19, 2018, Wed.-Fri. Rasch Conference: Seventh International Conference on Probabilistic Models for Measurement, Matilda Bay Club, Perth, Australia, Website
April 13-17, 2018, Fri.-Tues. AERA, New York, NY, www.aera.net
May 25 - June 22, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
June 29 - July 27, 2018, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps), www.statistics.com
Aug. 10 - Sept. 7, 2018, Fri.-Fri. On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets), www.statistics.com
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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