Should validate HOC or not ?

Frequently asked questions about PLS path modeling.
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lilyv
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Joined: Thu Apr 04, 2019 5:07 pm
Real name and title: Lily Vu

Should validate HOC or not ?

Post by lilyv » Thu Apr 04, 2019 5:32 pm

Hello everyone,
I aim to test effect of each dimension of Service Quality (SQ) to Satisfaction. In the literature, SQ has 7 dimensions (SQ is reflective-reflective higher-order constructs, 7 dimensions are its LOCs). Through my qualitative research, I add 2 more as new dimensions of SQ.

I conducted EFA and CFA via SmartPLS for all 9 dimensions and all thresholds are satisfied.

My question as follow : Have I to assess the validity and relialibity of HOC measurement model (SQ) ? For clearly, main objectif of my research is to test effect of each dimension to Satisfaction (not SQ (HOC) to satisfaction). Is it necessary to assess HOC measurement ? because I don't test effect of SQ to Satisfaction, but its dimensions (9 dimensions).

I hope you can get me more clear and let me know some references talking about the same model like mine.

Many thanks in advance.

jmbecker
SmartPLS Developer
Posts: 1059
Joined: Tue Mar 28, 2006 11:09 am
Real name and title: Dr. Jan-Michael Becker

Re: Should validate HOC or not ?

Post by jmbecker » Fri Apr 05, 2019 5:28 pm

Can you show us a representation of your model?
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

lilyv
PLS Junior User
Posts: 9
Joined: Thu Apr 04, 2019 5:07 pm
Real name and title: Lily Vu

Re: Should validate HOC or not ?

Post by lilyv » Mon Apr 08, 2019 9:21 pm

Dear Mr Becker,

I attached here graphical representation of my model. In fact, these SQ1 to SQ8 are dimensions of SQ model. By theoretical, SQ has 6 dimensions. After my qualitative research, I would like to add SQ2 and SQ3 as 2 other dimensions of SQ.

Could you explain me if I have to assess mearsurement model of SQ (higher order construct) before testing effect of its dimensions to Satisfaction ?
Attachments
Graphical representation-SQ.png
Graphical representation-SQ.png (41.85 KiB) Viewed 451 times

jmbecker
SmartPLS Developer
Posts: 1059
Joined: Tue Mar 28, 2006 11:09 am
Real name and title: Dr. Jan-Michael Becker

Re: Should validate HOC or not ?

Post by jmbecker » Sat Apr 13, 2019 1:10 pm

The central question is: Do you believe that all dimensions are part of a higher-order constructs that fully mediates all effects or not?
If yes, you need to include the higher-order construct SQ and assess the effect of each sub-dimension of SQ and then the effect of SQ on satisfaction. However, if you do not believe that there exists such a higher-order construct that fully mediates all effect of the sub-dimensions then the model you show would be better.
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

lilyv
PLS Junior User
Posts: 9
Joined: Thu Apr 04, 2019 5:07 pm
Real name and title: Lily Vu

Re: Should validate HOC or not ?

Post by lilyv » Mon Apr 15, 2019 2:50 pm

Dear Dr. Becker,

I see that there are some significant effects coming directly from some dimensions of SQ to Satisfaction. As what you advise, I think it's not necessary to include higher-order construct SQ in my model.

Thank you so much for your explanation. It's clear for me now.

Best regards,
Lily

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