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Hi Zero means no indirect effect. So when the confidence intervals do not contain zero and p is less than .05 an indirect effect is significant, that is, not zero hence suggesting that it does exist. So the term 'significantly different from zero' is just a statistical phrase to say that there is evidence of an indirect effect. Indirect effect means that an independent variable is affecting a dependent variable through its effects on a mediator or intervening variable. Dwayne Sent from my iPad On Aug 8, 2012, at 4:49 AM, "L.R.Saunders" <[log in to unmask]> wrote: > Hi guys, > > I have a question about indirect effects using the Preacher and Hayes marco Bootstrapping method. > > When using bootstrapping to determine whether the indirect effect is significant what does it actually when authors state something like this: “This analysis revealed that the indirect effect was significantly different from zero ( p < .05, 95% confidence interval [0.40, 4.80]). What does “significantly different from zero” mean? > > Any help would be appreciated > > Lee