[R] Cronbach's alpha

Weiwei Shi helprhelp at gmail.com
Wed Jan 24 19:17:10 CET 2007

Dear Listers:

I used cronbach{psy} to evaluate the internal consistency and some set
of variables gave me alpha=-1.1003, while other, alpha=-0.2;
alpha=0.89; and so on. I am interested in knowing how to interpret
1. negative value
2. negative value less than -1.

I also want to re-mention my previous question about how to evaluate
the consistency of a set of variables and about the total correlation
(my 2 cent to answer the question). Is there any function in R to do

Thank you very much!

Weiwei Shi, Ph.D
Research Scientist
GeneGO, Inc.

"Did you always know?"
"No, I did not. But I believed..."
---Matrix III

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