[Rasch] Empirically scored Likert scale

Snider-Lotz, Tom tsnider-lotz at previsor.com
Tue May 1 00:16:15 EST 2007

I'm working with two empirically scored datasets, one using a Likert
scale and one using a MC format.  I've got the same question regarding
each, but I'll make them separate queries to avoid confusion. 

The Likert scale assessment is a personality instrument with five
standard Likert options, SD to SA.  An empirical key has been developed,
so that different items are scored differently.  All items scores are on
a 3-point scale (0, 1, or 2).  So for one item, SD and D might be worth
zero, Neutral is worth 1, and A and SA are worth 2 points.  For another
item, SD, D, and neutral are worth zero, A is worth 1, and SA is worth

What is the best approach to analyzing these data?

Thanks for any help you can give.

 -- Tom Snider-Lotz  

Thomas G. Snider-Lotz, Ph.D.
Principal Scientist
1805 Old Alabama Road, Suite 150
Roswell, GA 30076
T:678.832.0555 F:770.642.6115
tsnider-lotz at previsor.com
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