The ratings on the Tufts Assessment of Motor-Performance are subjected to a rigorous and comprehensively reported Rasch analysis conducted by Steve Haley and Larry Ludlow (1992). This discussion is parallel to Ludlow & Haley (1992), but focussed at practitioners. Particularly eye-catching in the Physical Therapy paper is a diagram that summarizes the item difficulty distribution. Each construct is represented by a line and each item by a tick mark, located at that item's difficulty. This figure presents the composition of the instrument in an immediately comprehensible and aesthetically pleasing manner. [The version shown is only an artist's impression of that in the original paper].
Haley SM & Ludlow LH. 1992. Applicability of the Hierarchical Scales of the Tufts Assessment of Motor-Performance for School-Aged Children and Adults with Disabilities. Physical Therapy, 72, 3, 191-202.
Ludlow LH & Haley SM. 1992. Polytomous Rasch Models for Behavioral Assessment: The Tufts Assessment of Motor Performance. Chapter 8 in M. Wilson (Ed.) Objective Measurement: Theory into Practice. Vol. 1. Norwood, NJ: Ablex
|Partial item map of the Tufts Assessment of Motor-Performance (Ludlow & Hapey, 1992).|
Items are identified by number within strand and located by logit calbration.
Physical Therapy, S Haley & L Ludlow Rasch Measurement Transactions, 1992, 6:3 p. 241
|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|
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