[Rasch] Units of measurement in the social sciences

Paul Barrett pbarrett at hoganassessments.com
Tue Oct 23 07:43:01 EST 2007


	From: rasch-bounces at acer.edu.au
[mailto:rasch-bounces at acer.edu.au] On Behalf Of Andrew Kyngdon
	Sent: Tuesday, October 23, 2007 10:06 AM
	To: rasch at acer.edu.au
	Subject: RE: [Rasch] Units of measurement in the social sciences

	My two cents...

	 ...The unit of measurement in the Lexile reading scale is
defined as 1/1000th of the difference in comprehensibility between basal
primer texts and Grolier's (1986) Encyclopaedia (Stenner, 1986).  

Hello Andrew
Out of interest, what is the degree of precision of measurement of this
unit? i.e. to what level of precision can the unit be measured (0, 1, 2,
3, 5 decimal places etc.)
Regards ... Paul


Paul Barrett, Ph.D.

2622 East 21st Street | Tulsa, OK  74114

Chief Research Scientist

Office | 918.749.0632  Fax | 918.749.0635

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