Warppls

[Hamdi]

I have a structural equation model with multiple latent variables. Some have four indicators, some have more than ten indicators and one has has three indicators but the latent variable with the three indicators has three constant values for example (0.55, 0.42, 0.56). I'm using Warppls software !!!
Here are my questions:
1. Should I consider a variable with the three indicators (or constant values) as a latent variable.
2. The software automatically  delete all identical columns so how can I overcome this issue.
Many thanks,

[Bruce Weaver]

Why are you asking about WarpPLS (http://warppls.blogspot.ca/2009/12/welcome-to-warppls-community.html) in a forum dedicated to SPSS?  Perhaps you would have better luck sending your question to the author of the blog linked above, or posting to this list:

http://www.scriptwarp.com/groups/plsgroup/

;-)

Hamdi wrote

I have a structural equation model with multiple latent variables. Some have four indicators, some have more than ten indicators and one has has three indicators but the latent variable with the three indicators has three constant values for example (0.55, 0.42, 0.56). I'm using Warppls software !!!
Here are my questions:
1. Should I consider a variable with the three indicators (or constant values) as a latent variable.
2. The software automatically  delete all identical columns so how can I overcome this issue.
Many thanks,

[Rich Ulrich]

1.  No.  Kind of by definition:  a constant is not a "variable."

2.  Write a model that makes sense for the data you have. 
Those constants must belong in the description of the data set,
not in the model.

> Date: Tue, 9 Sep 2014 12:28:53 -0700

> From: [hidden email]
> Subject: Warppls
> To: [hidden email]
>
> I have a structural equation model with multiple latent variables. Some have
> four indicators, some have more than ten indicators and one has has three
> indicators but the latent variable with the three indicators has three
> constant values for example (0.55, 0.42, 0.56). /I'm using Warppls software/
> !!!
> Here are my questions:
> 1. Should I consider a variable with the three indicators (or constant
> values) as a latent variable.
> 2. The software automatically delete all identical columns so how can I
> overcome this issue.
> Many thanks,
>

--
Rich Ulrich

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