Search found 842 matches

by jmbecker
Fri Oct 12, 2018 8:49 am
Forum: Ongoing and Future Research
Topic: Singular Matrix Problem - MGA
Replies: 1
Views: 386

Re: Singular Matrix Problem - MGA

The only possible option is to exclude the variable from your group model. This should not be a problem because you already control for the variable by grouping your data.
by jmbecker
Fri Oct 12, 2018 8:47 am
Forum: FAQ (Methodology)
Topic: Using correct effect size/calculate sample size in G power
Replies: 1
Views: 392

Re: Using correct effect size/calculate sample size in G power

First, you need to think which is the correct test for your example. Do you want to test mean differences? Or what do you want to test?
by jmbecker
Fri Oct 12, 2018 8:45 am
Forum: Requested Features
Topic: f square
Replies: 1
Views: 382

Re: f square

Please also use the search function of the forum. It is a very useful information source. I think this topic has been covered already.
by jmbecker
Fri Oct 12, 2018 8:44 am
Forum: Requested Features
Topic: NFI
Replies: 1
Views: 18

Re: NFI

That means that most of the fit measures are not defined for your model. This likely happens when you have repeated indicators. Having those in your model means that you have a correlation matrix with correlation between variables (the repeated indicators) that are 1, which means perfect collinearit...
by jmbecker
Thu Oct 04, 2018 8:17 am
Forum: FAQ (SmartPLS 2.0)
Topic: Where can I find the indicator reliability in SmartPLS
Replies: 5
Views: 1373

Re: Where can I find the indicator reliability in SmartPLS

Sure. That is a method specific feature and not a software feature.
by jmbecker
Thu Oct 04, 2018 8:16 am
Forum: Application of PLS
Topic: Specific level of complexity of HCMs / number of predictors
Replies: 2
Views: 427

Re: Specific level of complexity of HCMs / number of predictors

Well, yes based on the structural model that you show 10 is the largest number of predictors that point to a construct (HOC_e). However, if you model the HOC with the repeated indicator approach (which seems to be the case in your model) and you have a formative HOC and use Mode B to with the repeat...
by jmbecker
Thu Oct 04, 2018 8:05 am
Forum: FAQ (Methodology)
Topic: Total and Individual indirect effect
Replies: 2
Views: 86

Re: Total and Individual indirect effect

It is certainly possible, but unusual. How do you assess significance? Based on t and p-value? For the indirect effects it is usually better to look at the confidence intervals as the bootstrap distribution might be non-normal and therefore using the t-statistic might not be appropriate. You can als...
by jmbecker
Thu Oct 04, 2018 8:01 am
Forum: FAQ (Methodology)
Topic: f2 is greater than 1
Replies: 7
Views: 1500

Re: f2 is greater than 1

That sounds very strange. Effects sizes of moderating effects are usually quite small. Do you use the f² effect size from the SmartPLS output or a self-calculated one?
by jmbecker
Tue Sep 18, 2018 3:25 pm
Forum: FAQ (Methodology)
Topic: Data import - Percentage values
Replies: 1
Views: 70

Re: Data import - Percentage values

You need to import them without the % sign. Whether you use 5 or 0.05 should not make a difference as long as all values are on the same scale.
by jmbecker
Sun Sep 16, 2018 3:54 pm
Forum: FAQ (Methodology)
Topic: MGA unequal group sizes
Replies: 1
Views: 67

Re: MGA unequal group sizes

If you have such small sample sizes for the group results are certainly not very reliable. The biggest chance is that you are missing out important differences because of low statistical power. However, if your groups are not very representative for the general population for which they stand, you m...
by jmbecker
Sun Sep 16, 2018 3:48 pm
Forum: FAQ (SmartPLS 2.0)
Topic: Effect size and predective relevance
Replies: 2
Views: 92

Re: Effect size and predective relevance

If you have only one predictor and you exclude the predictor you explain/predict nothing. It is a bit of a debate whether it makes sense to calculate the indices for such a variable with R² excluded etc. being 0 or whether they are not defined.

I would say that for f² is makes sense, but not for q².
by jmbecker
Sat Sep 08, 2018 11:47 am
Forum: FAQ (Methodology)
Topic: Constant term
Replies: 4
Views: 885

Re: Constant term

You should copy the undstandardized latent variable scores from the IPMA (IPMA > Latent Variables > Unstandardized) into SPSS, Excel or some other software that can run normal regression analysis. You should get the same results for the path coefficients as in (IPMA > Path Coefficients > Unstandardi...
by jmbecker
Wed Sep 05, 2018 8:55 pm
Forum: FAQ (Methodology)
Topic: MGA at second order construct
Replies: 1
Views: 59

Re: MGA at second order construct

You just need to also include the group information for the second-stage model. The observations in the first-stage model are in the same order as in your data set. Hence, you can just include the grouping variable from your first-stage model in your second-stage model.
by jmbecker
Tue Sep 04, 2018 8:13 pm
Forum: Bugs
Topic: Bootstrapping - system freezes
Replies: 2
Views: 481

Re: Bootstrapping - system freezes

Please send your model and data to the support. They can help. http://support.smartpls.com/

Generally, you should make sure to use the latest version (version 3.2.7). You should also state which algorithm you use (PLS or PLSc) and which bootstrap settings you use (basic or complete), etc.
by jmbecker
Tue Sep 04, 2018 8:10 pm
Forum: FAQ (Methodology)
Topic: correlational/causal language in PLS-SEM reporting
Replies: 1
Views: 56

Re: correlational/causal language in PLS-SEM reporting

SEM in general is correlational. Some people use causal language because they believe their theory is strong enough to make causal claims based on correlational data. Basically, you can make the same claims that you would do based on a multivariate regression; just with multiple-indicator measuremen...