What is Sobel test used for?

The Sobel test is used to determine whether a variable carries (or mediates) the effect of an independent variable to the dependent variable—the outcome of interest.

What is mediation effect?

– Mediation refers to the transmission of the effect of an independent variable on a dependent variable through one or more other variables. These variables are termed mediator or intervening variables. Thus, the independent variable has no direct effect on the dependent variable; rather, its entire effect is indirect.

When should you test for mediation?

As mentioned above, Sobel’s test is performed to determine if the relationship between the independent variable and dependent variable has been significantly reduced after inclusion of the mediator variable. In other words, this test assesses whether a mediation effect is significant.

What test is used for mediation?

Use either the Sobel test or bootstrapping for significance testing. The following shows the basic steps for mediation analysis suggested by Baron & Kenny (1986). A mediation analysis is comprised of three sets of regression: X → Y, X → M, and X + M → Y.

How to conduct the Sobel test for mediation?

To conduct the Sobel test for mediation, we want to perform two separate regression analyses. The first will investigate the effect of the predictor on the mediator. The second will investigate the effect of BOTH the predictor and the mediator on the outcome. Let’s go ahead and conduct the first of these regression analyses.

What are the results of the Sobel test?

The Sobel test results in 3 values, test statistic, standard error and p-value. we have the information that if p-value falls below the alpha value of 0.05 then mediation effect is significant. what can we infer from test statistic ? please clarify Differences between full mediation and partial mediation?

Is the Sobel _ SPSS macro compatible with Ver 18?

However, for this exercise we will use this macro. Also note that this version of the macro does not work in SPSS ver 18 (unless you have all the patches). The older version (sobel_SPSS) does work in ver 18 though. Testing mediation using bootstrapping in SPSS

How to test mediation using bootstrapping in SPSS?

Psychological Methods, 7(1), 83-104. This is an interactive PDF – if you are viewing this on a computer connected to the internet: the hypertext links (blue underlined) should take you to the relevant site. Access the relevant datafile by clicking on the link – if you are reading this off a hardcopy: Really???