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

From: Tom Backer Johnsen <backer_at_psych.uib.no>
Date: Mon 05 Jun 2006 - 20:47:38 EST

falissard wrote:
> This test can be meaningfull, but only in rare circumstancies (are the items
> (or raters) more consistent than what could be expected by chance?).

Do you have a reference to such a test?

> I would do it with R using a bootstrap procedure (Efron & Tibshirani, An
> introduction to the bootstrap, p.156).

I agree. That should be possible, actually quite simple. Run through the data a large number of times, randomize the sequence of the observations for each case and compute alpha for each run.

Tom

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| Tom Backer Johnsen, Psychometrics Unit,  Faculty of Psychology |
| University of Bergen, Christies gt. 12, N-5015 Bergen,  NORWAY |
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