Search found 1079 matches

by jmbecker
Sun Jan 26, 2020 9:22 pm
Forum: FAQ (Methodology)
Topic: Can I use PLS SEM to validate my instrument which i developed from grounded theory
Replies: 3
Views: 82

Re: Can I use PLS SEM to validate my instrument which i developed from grounded theory

You describe a reflective-formative higher-order construct. And it seems you model it by using the repeated indicator approach. Such a model is generally valid, but comes with some problems. 1) As you describe it does not allow you to assess the R² etc. because the endogenous construct in your model...
by jmbecker
Thu Jan 23, 2020 8:59 am
Forum: FAQ (Methodology)
Topic: MGA vs two different analysis
Replies: 2
Views: 75

Re: MGA vs two different analysis

You should find the same results given that you have used the same data and algorithm settings. If you continue to find differences please send the project including data and model to our support: https://support.smartpls.com/
by jmbecker
Wed Jan 22, 2020 2:57 pm
Forum: FAQ (Methodology)
Topic: Re. common method bias (Harman's single factor' value is high)
Replies: 1
Views: 61

Re: Re. common method bias (Harman's single factor' value is high)

If you have a problem with common method bias there is not much you can do, but collect new (better) data. Harman's single factor test is usually very insensitive to common method bias. It has been critizied in the literature for this problem. Thus, if it detects a bias there is likely a problem in ...
by jmbecker
Wed Jan 22, 2020 2:50 pm
Forum: FAQ (Methodology)
Topic: IMPA for model involving second order constructs
Replies: 3
Views: 300

Re: IMPA for model involving second order constructs

There is no literature on this yet.
by jmbecker
Wed Jan 22, 2020 2:49 pm
Forum: FAQ (Methodology)
Topic: how to specify MODE A or MODE B for reflective-formative HOC with extended repeated indicators
Replies: 1
Views: 130

Re: how to specify MODE A or MODE B for reflective-formative HOC with extended repeated indicators

I agree that Figure 8 is misleading and I would have liked to present it differently, but some of the co-authors think it is better this way. Why? The estimation Mode A and Mode B are not necessarily linked to the mode of measurement (reflective / formative). SmartPLS uses as a default Mode A for re...
by jmbecker
Wed Jan 22, 2020 9:42 am
Forum: FAQ (Methodology)
Topic: How do I carry out Model of Identification
Replies: 1
Views: 459

Re: How do I carry out Model of Identification

Identification is realtively simple in PLS. PLS models are theoretically identified if each construt is connected to at least one other construct. If you have a higher-order construct it means that your higher-order construct needs to be connected to at least one other construct which is not one of ...
by jmbecker
Mon Jan 20, 2020 8:54 am
Forum: FAQ (Methodology)
Topic: Low R square value
Replies: 1
Views: 87

Re: Low R square value

Low R² means that you are not able to explain much variance in your dependent variable. That can have several reasons. For example, your DV is very noisy (i.e., has a lot of variance). This may be because of error variance or because of many things contribute to the DV and your predictor is only one...
by jmbecker
Mon Jan 20, 2020 8:45 am
Forum: FAQ (Methodology)
Topic: SmartPLS basics
Replies: 1
Views: 107

Re: SmartPLS basics

You may want to read the Primer on PLS-SEM to get a basic understanding of the method and evaluation:
https://www.smartpls.com/documentation/ ... s-sem-book
by jmbecker
Mon Jan 20, 2020 8:43 am
Forum: Requested Features
Topic: Moderation Analysis
Replies: 1
Views: 578

Re: Moderation Analysis

You have to calculate that yourself using the data provided under Path Coefficients > Samples
by jmbecker
Sat Jan 18, 2020 3:45 pm
Forum: SmartPLS Small Talk Corner
Topic: Interpretation of Factor Scores
Replies: 1
Views: 135

Re: Interpretation of Factor Scores

The interpretation of standardized coefficients is: when you increase the IV by one standard deviation, the DV increases by 0.53 standard deviations. It is a dimension-less measure, similar to a correlation (but not necessarily bound between -1 and 1). If all you indicators are on the same scale you...
by jmbecker
Sat Jan 18, 2020 3:34 pm
Forum: FAQ (Methodology)
Topic: Index of moderated mediation
Replies: 1
Views: 156

Re: Index of moderated mediation

The index of moderated mediation is given by p2*p5. You can find this as the specific indirect effect of Y1*M -> Y2 -> Y3. This is exactly p2*p5. You can assess its significance using bootstrapping.
by jmbecker
Sat Jan 18, 2020 3:31 pm
Forum: FAQ (Methodology)
Topic: Poor effect size, predictive relevance with good R square
Replies: 1
Views: 55

Re: Poor effect size, predictive relevance with good R square

Maybe there is simply no relationship between your variables in your context? Or you have the wrong predictors?
by jmbecker
Sat Jan 18, 2020 3:29 pm
Forum: FAQ (Methodology)
Topic: P-values of reliability and AVE
Replies: 2
Views: 87

Re: P-values of reliability and AVE

The p-values are based on a true null, which might not be very useful. It is only the standard option in bootstrapping. However, 1) I would not use typical p-value / t-value test here because the distribution of the reliabilities is unknown, hence I would use bootstrap confidence intervals. 2) confi...
by jmbecker
Wed Dec 11, 2019 5:32 pm
Forum: FAQ (Methodology)
Topic: IMPA for model involving second order constructs
Replies: 3
Views: 300

Re: IMPA for model involving second order constructs

You need to run the IPMA also for the first-stage model and then take the unstandardized latent variables scores as indicators into the next stage. This is something that I would generally recommend, as you will get the same standardized results, but have some additional flexibility. For example, it...