Single indicator for each latent variable

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baselabuali
PLS Junior User
Posts: 8
Joined: Thu Feb 11, 2021 1:39 pm
Real name and title: Basel Abu Ali

Single indicator for each latent variable

Post by baselabuali »

Dears

My model is a "pass" model only by using a single indicator for each latent variable. Accordingly, most of the measurement model (outer loadings) and structural model (Cronbach alpha, rho_A, composite reliability, AVE, VIF) are shown as "1.000". Is this OK??

Thanks
jmbecker
SmartPLS Developer
Posts: 1160
Joined: Tue Mar 28, 2006 11:09 am
Real name and title: Dr. Jan-Michael Becker

Re: Single indicator for each latent variable

Post by jmbecker »

If you have no measurement model (only single indicators) there is nothing to calculate and the assumption for single indicators is perfect reliability (i.e., the construct is the same as the indicator). So this is ok.

However, the question is, whether using only single indicator constructs is in general ok. But that depends on your context and is an entirely different question.
Dr. Jan-Michael Becker, University of Cologne, SmartPLS Developer
Researchgate: https://www.researchgate.net/profile/Jan_Michael_Becker
GoogleScholar: http://scholar.google.de/citations?user ... AAAJ&hl=de
baselabuali
PLS Junior User
Posts: 8
Joined: Thu Feb 11, 2021 1:39 pm
Real name and title: Basel Abu Ali

Re: Single indicator for each latent variable

Post by baselabuali »

Thank you Dr. Jan

Actually, I have around four indicators for each of the three latent variables, but the model 'best' fits only when using one indicator for each.

Regards,
Basel
baselabuali
PLS Junior User
Posts: 8
Joined: Thu Feb 11, 2021 1:39 pm
Real name and title: Basel Abu Ali

Re: Single indicator for each latent variable

Post by baselabuali »

Dear Dr. Jan

Is it possible to share with you more details on my model and data?

Basel
jmbecker
SmartPLS Developer
Posts: 1160
Joined: Tue Mar 28, 2006 11:09 am
Real name and title: Dr. Jan-Michael Becker

Re: Single indicator for each latent variable

Post by jmbecker »

We cannot provide individual counselling on how to build an appropriate model. We can only answer general methodological questions that might also be interesting for other researchers.

If you need more input on your specific model, you may either purchase the enterprise license which comes with 8 hours of individual counselling (https://www.smartpls.com/pricing) or attend one of our workshops (https://www.smartpls.com/courses).
Dr. Jan-Michael Becker, University of Cologne, SmartPLS Developer
Researchgate: https://www.researchgate.net/profile/Jan_Michael_Becker
GoogleScholar: http://scholar.google.de/citations?user ... AAAJ&hl=de
baselabuali
PLS Junior User
Posts: 8
Joined: Thu Feb 11, 2021 1:39 pm
Real name and title: Basel Abu Ali

Re: Single indicator for each latent variable

Post by baselabuali »

Thank you Dr. Jan, very clear.

Basel
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