Dominant indicators with negative loading in LOC

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iputu.ariyasa
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Real name and title: I Putu Ariyasa, ST.

Dominant indicators with negative loading in LOC

Post by iputu.ariyasa » Wed Jul 05, 2017 2:51 am

i am investigating a model with exogenous Formative HOC that has four Reflective LOCs. One of the LOC originally measured with three indicators, yet when i run the PLS algorithm, two of the indicators showed negative loadings ( < -0,40) while the other one showed high outer loading (0,8). this result on low composite reliability and AVE.

And then, i tried to remove the positive indicator leaving the two negative one. After running the PLS calculation, the two indicator showed positive loading and result in acceptable composite reliability, convergent validity, and discriminant validity of the LOC. And then when i run the second stage to analyze the HOC, the LOC now result on negative-insignificant weight and negative-insignificant loading.

Note that there is no collinearity problem found (VIF < 5) and all the indicators have been recoded accordingly. In addition, my research is more concerned with the path from the HOC to endogenous construct.

Since opting for retaining the positive one will result in single indicator, does removing the indicator with positive loading justifiable?.

Regards,
I Putu Ariyasa

jmbecker
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Re: Dominant indicators with negative loading in LOC

Post by jmbecker » Wed Jul 05, 2017 6:18 pm

Is the orientation of the indicators in the same direction? Sometimes reversing the response-order (e.g., because the question is a reverse item) makes sense to align all indicators to have the same direction.
Dr. Jan-Michael Becker, University of Cologne, SmartPLS Developer
Researchgate: https://www.researchgate.net/profile/Ja ... v=hdr_xprf
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iputu.ariyasa
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Posts: 22
Joined: Mon May 15, 2017 2:10 am
Real name and title: I Putu Ariyasa, ST.

Re: Dominant indicators with negative loading in LOC

Post by iputu.ariyasa » Thu Jul 06, 2017 12:44 am

in the survey phase, they are not. the negative loading indicator are reverse item. But i have recoded the two negative indicator so that in the analysis phase, all three indicators have the same directions.

jmbecker
SmartPLS Developer
Posts: 879
Joined: Tue Mar 28, 2006 11:09 am
Real name and title: Dr. Jan-Michael Becker

Re: Dominant indicators with negative loading in LOC

Post by jmbecker » Thu Jul 06, 2017 6:04 pm

Based on the results you have either not done the recoding correctly or respondents have not noticed the reverse item and just answered as for the other two items. In the second case you have a big problem, because your measurement simple didn't work. Especially, if respondents have not payed close attention, I would doubt all study results.
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

iputu.ariyasa
PLS Senior User
Posts: 22
Joined: Mon May 15, 2017 2:10 am
Real name and title: I Putu Ariyasa, ST.

Re: Dominant indicators with negative loading in LOC

Post by iputu.ariyasa » Fri Jul 07, 2017 9:41 am

jmbecker wrote:Based on the results you have either not done the recoding correctly or respondents have not noticed the reverse item and just answered as for the other two items. In the second case you have a big problem, because your measurement simple didn't work. Especially, if respondents have not payed close attention, I would doubt all study results.
Well then i hope it's not the second one. I'll try to recode it again carefully.

Thank you very much for your guidance.

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