Hi Lina

There are many techniques. I particularly like two techniques: Process in SPSS (SPSS macro). If you have access to SPSS software:

http://www.processmacro.org/index.html.

Another is the Modeling of Structural Equations with the partial least square. I recommended the sofwares SmartPLS or Project lavaan in R (http://lavaan.ugent.be/).

If you want to. Please send more information about your model.(send the model diagram) and more details.

I hope this helps you.

greetings

Dirceu

Hello Lina

1. The Basic Mediation Model is,

M = β0 +β 1 X=e.

2. Indirect (mediated) effect of X on Y = a*b and Direct (unmediated) effect of X on Y = c’ .

3. To test for mediation we can examine the statistical significance of the indirect effect (ie. H0 : ab = 0).

4. There are many statistical tests of the indirect effect (see Hayes & Scharkow, 2013 for a review). Some of these tests (eg. the Sobel Z test) assume the indirect effect is normally distributed.

5. Unfortunately, the indirect effect is rarely normally distributed.

6. Non-parametric bootstrapping (with confidence intervals) has been recommended for testing mediation as it does assume the indirect effect is normally distributed and yields the most accurate results .

7. Please refer to,

Hayes, A. (2013). Introduction to mediation, moderation, and conditional process analysis. New York: Guilford Press.

Regards,

Zuhair

Worth considering the mediation package in R and Stata. See https://imai.princeton.edu/projects/mechanisms.html

for details.

Hi Lina

There are many techniques. I particularly like two techniques: Process in SPSS (SPSS macro). If you have access to SPSS software:

http://www.processmacro.org/index.html.

Another is the Modeling of Structural Equations with the partial least square. I recommended the sofwares SmartPLS or Project lavaan in R (http://lavaan.ugent.be/).

If you want to. Please send more information about your model.(send the model diagram) and more details.

I hope this helps you.

greetings

Dirceu

Hi Dirceu da Silva ,

I'm agreed with you but would like to add on a bit about method. Lina, you can read Hair, et al (2017) book that proposes and suggests the way to use the method in analyzing your data.

Example: As suggested by Hair et al. (2017) and Cain et al. (2016) researchers assessed the multivariate skewness and kurtosis using the software available at: https://webpower.psychstat.org/models/kurtosis/results.php?url=fb9771ad65087c96b dc6a313929fa338.

The best way please refer Hair et al (2017) or Garson, G. D. (2016). Partial Least Squares: Regression and Structural Equation Models. Asheboro, NC: Statistical Associates Publishers.

Lina,

In the case you are not using a statistical package (SPSS, R, etc.) I have attached a link to a webpage that outlines/defines both moderation and mediation analyses and the steps taken to calculate both.

http://www.cyfs.unl.edu/docs/CenterScope/ResearchMethodologySeries/Chin.pdf.