Re: [R] please help with estimation of true correlations andreliabilities

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From: John Fox (jfox@mcmaster.ca)
Date: Fri 14 May 2004 - 04:02:55 EST


Message-id: <web-39263920@cgpsrv2.cis.mcmaster.ca>

Dear Jens,

If you're willing to assume multinormality but don't have in mind a
specific model to estimate, then why not use factanal? The uniquenesses
are estimates of the unreliability of the items.

I hope this helps,
 John

On Thu, 13 May 2004 17:09:14 +0200 (MEST)
 "Jens Oehlschlägel" <joehl@gmx.de> wrote:
>
> Dear John,
> Dear Joseph,
>
> Thank you for your quick answers and the pointer to semnet.
> I try to clarify on my assumptions:
>
> - yes, I am willing to assume multivariate normality
> - no, I don't want to assume a single factor model
> - I assume there is an unknown number of factors, and I do not know
> which
> items belong to which factors
>
> but I still want to estimate single item reliabilities
>
> Is this impossible?
> How can one specify such unspecified model to sem?
> Which (exploratory?) function would me help doing this?
> Or just: what should I read?
>
> Thanks for any help
>
>
> Jens Oehlschlägel
>
> --
>
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--------------------------------
John Fox
Department of Sociology
McMaster University
Hamilton, Ontario, Canada
http://socserv.mcmaster.ca/jfox/

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