[Rasch] Measurement gaffe of the year

Nancy Cook ncook at cfa.harvard.edu
Wed Apr 22 00:22:49 EST 2009

Looks like a good example of "measurement error" to me.  I wonder what 
those negative numbers mean.


Nancy R. Cook Smith, Ph.D.
Science Education Department
Harvard-Smithsonian Center for Astrophysics
60 Garden Street, M.S. 71
Cambridge, MA  02138
Phone: (617) 495-9726

At 07:11 AM 4/21/2009, Andrew Kyngdon wrote:
>Found in a psychometric text in the Fisher Library of the University of 
>Height is a good example of an interval scale (Friedenberg, 1995, p.17).
>I kid you not.
>Friedenberg, L. (1995). Psychological testing - Design, analysis and use. 
>Needham Heights, M.A.: Allyn & Bacon.
>Dr Andrew Kyngdon
>Director of Pacific Rim Operations
>MetaMetrics, Inc.
>P.O. Box 754 North Sydney NSW 2059 Australia
>Phone: 0401768090 (Int. +61401768090)
>Email: akyngdon at lexile.com
>Web: www.lexile.com <http://www.lexile.com/>
>Lexile Teacher's Lounge: http://lexile-teachers.blogspot.com/

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