"DNA Fingerprinting" Redivivus

Yesterday's talk [Feb. 19, 2001], "DNA Fingerprinting," by the University of Chicago's Michael Linacre at the LSU HSC Dept of Genetics was attended by more than 25 people. Linacre presented a basic contrast of the differing purposes motivating the use of mathematical models in statistical and measurement research. He passed around a Ptolemaic astrolabe [courtesy of Tom O'Neill] as an illustrative artifact of the days when Ptolemy's descriptively superior account of the heavenly bodies was held also to be theoretically superior to the Copernican account. Most statistical studies of test, survey, and genetic data are similar to the Ptolemaic system in achieving accurate data description, but will eventually fall to theoretically superior measurement accounts that support enhanced predictive capacities, just as Ptolemy's system fell when confronted with Newton's laws of motion.

Mike then recapitulated his analysis of Geyer & Thompson's (1992) DNA fingerprinting data [RMT 7:1, 274], showing how a probabilistic conjoint (Rasch) measurement model for genetic diversity can provide a measure of relatedness. Mike also showed the results of his recent examination of data from a popular textbook comparing genetic frequencies across different global regions. In taking up this topic, with no prior knowledge of the personal connection or the work that was done, Mike cited a researcher (Morton) with whom Bronya Keats, Head of the Dept. of Genetics, had worked, and furthermore took the analysis in the same direction that Keats and Morton had 25 years previously when working with similar data. Of special interest in this work was the use of "lods," log-odds units, known in Rasch measurement as logits. After the seminar, Keats provided Linacre with reprints of the published work she did with Morton; these articles include tables of data which Linacre plans to evaluate in a Rasch context. Stay posted for a comparison of lods and logits ....

William P. Fisher, Jr.

Fisher, W.P. Jr. (2001) "DNA Fingerprinting" Redivivus. Rasch Measurement Transactions 14:4 p.785

"DNA Fingerprinting" Redivivus. Fisher, W.P. Jr. … Rasch Measurement Transactions, 2001, 14:4 p.785

Rasch-Related Resources: Rasch Measurement YouTube Channel
Rasch Measurement Transactions & Rasch Measurement research papers - free	An Introduction to the Rasch Model with Examples in R (eRm, etc.), Debelak, Strobl, Zeigenfuse	Rasch Measurement Theory Analysis in R, Wind, Hua	Applying the Rasch Model in Social Sciences Using R, Lamprianou	El modelo métrico de Rasch: Fundamentación, implementación e interpretación de la medida en ciencias sociales (Spanish Edition), Manuel González-Montesinos M.
Rasch Models: Foundations, Recent Developments, and Applications, Fischer & Molenaar	Probabilistic Models for Some Intelligence and Attainment Tests, Georg Rasch	Rasch Models for Measurement, David Andrich	Constructing Measures, Mark Wilson	Best Test Design - free, Wright & Stone Rating Scale Analysis - free, Wright & Masters
Virtual Standard Setting: Setting Cut Scores, Charalambos Kollias	Diseño de Mejores Pruebas - free, Spanish Best Test Design	A Course in Rasch Measurement Theory, Andrich, Marais	Rasch Models in Health, Christensen, Kreiner, Mesba	Multivariate and Mixture Distribution Rasch Models, von Davier, Carstensen
Rasch Books and Publications: Winsteps and Facets
Applying the Rasch Model (Winsteps, Facets) 4th Ed., Bond, Yan, Heene	Advances in Rasch Analyses in the Human Sciences (Winsteps, Facets) 1st Ed., Boone, Staver	Advances in Applications of Rasch Measurement in Science Education, X. Liu & W. J. Boone	Rasch Analysis in the Human Sciences (Winsteps) Boone, Staver, Yale	Appliquer le modèle de Rasch: Défis et pistes de solution (Winsteps) E. Dionne, S. Béland
Introduction to Many-Facet Rasch Measurement (Facets), Thomas Eckes	Rasch Models for Solving Measurement Problems (Facets), George Engelhard, Jr. & Jue Wang	Statistical Analyses for Language Testers (Facets), Rita Green	Invariant Measurement with Raters and Rating Scales: Rasch Models for Rater-Mediated Assessments (Facets), George Engelhard, Jr. & Stefanie Wind	Aplicação do Modelo de Rasch (Português), de Bond, Trevor G., Fox, Christine M
Exploring Rating Scale Functioning for Survey Research (R, Facets), Stefanie Wind	Rasch Measurement: Applications, Khine	Winsteps Tutorials - free Facets Tutorials - free	Many-Facet Rasch Measurement (Facets) - free, J.M. Linacre	Fairness, Justice and Language Assessment (Winsteps, Facets), McNamara, Knoch, Fan

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