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path coefficients

Posted: Fri Nov 08, 2013 2:05 pm
by wupanying
Dear all:
I would be very grateful if you tell me the difference between the path coefficients of smartpls and the standardized regression coefficients of spss. Are they the same?

Posted: Fri Nov 08, 2013 6:17 pm
by Diogenes
Hi,
yes, they are the same.
If you want to test:
- run the one model in SmartPLS, for example: (x1, x2, x3 --> y)
- report / PLS / calculation results / Latent variable scores
- copy these scores to a spreadsheet / import them to SPSS
- Run the regression analysis (structural model).
- compare the beta values with path coefficients.

Best regards,
Bido

Posted: Sat Nov 09, 2013 2:16 am
by wupanying
Diogenes wrote:Hi,
yes, they are the same.
If you want to test:
- run the one model in SmartPLS, for example: (x1, x2, x3 --> y)
- report / PLS / calculation results / Latent variable scores
- copy these scores to a spreadsheet / import them to SPSS
- Run the regression analysis (structural model).
- compare the beta values with path coefficients.

Best regards,
Bido
Dear professor,
Why are they not equal when I test? Following is my test steps, there are five measured variables for each latent variable in my model. I take the mean of the five measured variables. Then I run the linear regression of the means and get the standardized coefficients. The standardized coefficients are not equal with the path coefficients. Is there any wrong with my steps?

Posted: Sat Nov 09, 2013 10:00 am
by Diogenes
Hi,

The LV scores from SmartPLS are not simple mean of the indicators, they are weighted by the outer weights).

Suggestion to compare regression in a simple way:
- use just one indicator by LV
- run the model in SmartPLS, for example: (x1, x2, x3 --> y)
- Run regression analysis (x1, x2, x3 --> y) in SPSS.
- compare the beta values with path coefficients.

Best regards,
Bido

Re: path coefficients

Posted: Tue Nov 11, 2014 11:13 pm
by bradley7680
using latent variable scores/factor scores is common in research and especially in factor analysis and regression.

c.f., My PLS Handbook chapter which outlines the process of doing this.

Good luck
Brad