Barron kenny's 3-step method to calculate the mediation effect of General Structural Equation Model (GSEM) with the sobel test

[Drusilla Nguyen]

Hi there,

I want to test a complex mediational model using gsem command but what command is used for it. As I know medsem is used for sem but it doesn't work for gsem. The detailed code for direct and indirect effects are below:

gsem (govsprt <- govctr lnsale inno cert asso lnage fcons i.indus i.a1, family(bernoulli) link(logit)) ///
(banksprt <- govctr lnsale inno cert asso lnage fcons i.indus i.a1, family(bernoulli) link(logit)) ///
(open <- govsprt banksprt govctr lnsale inno cert asso lnage fcons i.indus i.a1, family(bernoulli) link(logit)), vce(cluster a1)

foreach x of varlist govctr lnsale inno cert asso lnage fcons {
display "indirect effect"
nlcom _b[open:govsprt]*_b[govsprt:`x']
nlcom _b[open:banksprt]*_b[banksprt:`x']
}

I really need some help on this. Any help would be greatly appreciated.