Alpha Cronbach with problems

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juliosolano
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Posts: 15
Joined: Wed Jan 20, 2016 10:41 pm
Real name and title: Julio Solano

Alpha Cronbach with problems

Post by juliosolano » Wed Jan 20, 2016 10:46 pm

Sr.

He tenido problemas encontrar Alpha de Cronbach de mis calculos, todo me da CERO. Si alguien puede ayudarme, que estoy haciendo mal. Gracias

Julio
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jmbecker
SmartPLS Developer
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Real name and title: Dr. Jan-Michael Becker

Re: Alpha Cronbach with problems

Post by jmbecker » Thu Jan 21, 2016 12:02 pm

Cronbachs Alpha, Composite Reliability, and AVE are not calculated for formative constructs but set to zero. If you have only formative constructs in your model, you will only get zeros for these indices.
Dr. Jan-Michael Becker, University of Cologne, SmartPLS Developer
Researchgate: https://www.researchgate.net/profile/Ja ... v=hdr_xprf
GoogleScholar: http://scholar.google.de/citations?user ... AAAJ&hl=de

juliosolano
PLS User
Posts: 15
Joined: Wed Jan 20, 2016 10:41 pm
Real name and title: Julio Solano

Re: Alpha Cronbach with problems

Post by juliosolano » Thu Jan 21, 2016 1:53 pm

Thanks, then if possible for the calculation, that I can change all my formative constructs ot reflexive constructs and make the calculation and this serves me? that is, the values are useful?

Thanks
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jmbecker
SmartPLS Developer
Posts: 842
Joined: Tue Mar 28, 2006 11:09 am
Real name and title: Dr. Jan-Michael Becker

Re: Alpha Cronbach with problems

Post by jmbecker » Fri Jan 22, 2016 7:38 am

If your constructs are really formative, then the Cronbachs Alpha is not usefull. That is why we are not reporting any results for formative constructs.
If you think your constructs are better represented as reflective, then model them as reflective and you will get the information for Cronbachs Alpha, etc.
Dr. Jan-Michael Becker, University of Cologne, SmartPLS Developer
Researchgate: https://www.researchgate.net/profile/Ja ... v=hdr_xprf
GoogleScholar: http://scholar.google.de/citations?user ... AAAJ&hl=de

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