Sorry.... the address for Genova is:
http://www.education.uiowa.edu/casma/GenovaPrograms.htmPatricia
______________________________
Patricia Régo
Evaluation Officer
School of Medicine
The University of Queensland
(Ph: 61-7-33464683;
[hidden email])
Evaluation Consultant
Skills Development Centre
Queensland Health
(Ph: 61-7-3636-6449;
[hidden email])
-----Original Message-----
From: Patricia Rego
Sent: Saturday, 11 November 2006 4:10 PM
To: 'Jeff Stuewig';
[hidden email]
Subject: RE: Generalizability theory/ Generalizability coefficient
Importance: High
Hello, Jeff
I've used SPSS to calculate variance components (GLM/Variance Components). However, you might find the software GENOVA (and its companion, "G-String") more useful. It is authored by Joe Crick and Robert Brennan and can be downloaded gratis. Robert Brennan's book (Generalizability Theory, 2001, Springer) is interesting and worthwhile, if heavy-going.
Regards
Patricia
______________________________
Patricia Régo
Evaluation Officer
School of Medicine
The University of Queensland
(Ph: 61-7-33464683;
[hidden email])
Evaluation Consultant
Skills Development Centre
Queensland Health
(Ph: 61-7-3636-6449;
[hidden email])
-----Original Message-----
From: SPSSX(r) Discussion [mailto:
[hidden email]] On Behalf Of Jeff Stuewig
Sent: Saturday, 11 November 2006 2:22 AM
To:
[hidden email]
Subject: Generalizability theory/ Generalizability coefficient
Has anybody used spss or created syntax (or macro) to compute
generalizability coefficients (i.e. Shavelson & Webb, 1991)? We have a 5
item scale measured at 5 different time points. Using alpha as a measure of
reliability our coefficients range from .65 to .69. A reviewer suggested we
compute generalizability coefficients instead. From what I've read I will
probably want to look at variance by person, item, and occasion but I'm
stumped as to how exactly to do this in spss and I didn't see anything on
Raynald's site. Any help appreciated. Thanks.
Jeff
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