Re: [R] Significance test, Cronbach's Alpha

From: falissard <falissard_b_at_wanadoo.fr>
Date: Mon 05 Jun 2006 - 17:43:25 EST


This test can be meaningfull, but only in rare circumstancies (are the items (or raters) more consistent than what could be expected by chance?). I would do it with R using a bootstrap procedure (Efron & Tibshirani, An introduction to the bootstrap, p.156).
Best regards,
Bruno

PS : I am not really a specialist...



Bruno Falissard
INSERM U669, PSIGIAM
"Paris Sud Innovation Group in Adolescent Mental Health" Maison de Solenn
97 Boulevard de Port Royal
75679 Paris cedex 14, France
tel : (+33) 6 81 82 70 76
fax : (+33) 1 45 59 34 18
web site : http://perso.wanadoo.fr/bruno.falissard/
 

-----Message d'origine-----
De : r-help-bounces@stat.math.ethz.ch
[mailto:r-help-bounces@stat.math.ethz.ch] De la part de Tom Backer Johnsen Envoyé : lundi 5 juin 2006 08:05
À : r-help@stat.math.ethz.ch
Objet : [R] Significance test, Cronbach's Alpha

Hello:

I am reviewing a paper at the moment where the author reports a Cronbach's Alpha and adds a significance test of the value. I was not aware that such a test exists. Does it? If so, how is it done in R?

Tom

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| Tom Backer Johnsen, Psychometrics Unit, Faculty of Psychology |
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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Mon Jun 05 17:49:03 2006

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