How do I... DO A MEDIATION REGRESSION in Jamovi? (2022)

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Does Jamovi allow testing a third variable, in what is called mediation? Not in the base version, but if you download the Medmod package in the program, you can get the needed functionality to test a single mediator - how do we do that? I have the answers and more in this next episode of learning stats with Jamovi!
Jamovi stats: www.jamovi.org/
NOTE: My tutorials always use the latest build release from Jamovi. Some features may not be present if you are using an earlier version. Most features are similar across OSes, but check the release notes on the website download page to find further details.
Find me on Twitter: / profaswan
Go to my website: swanpsych.com
Twitch streams on psych & related topics: / cogpsychprof
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Опубликовано:

17 сен 2024

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Комментарии : 21

@aleksandrakwasnicka8765 3 месяца назад

Dan is Danielle J. Navarro (one of the authors of LSJ) so mum, not dad.

@AlexanderSwan 3 месяца назад

You’re absolutely right! I recorded this and had been using the data before I realized that.

@joshuapickup2372 29 дней назад

Have you got any suggestion for how to report an insignificant mediation result?

@AlexanderSwan 27 дней назад

I’d say report that whatever paths are nonsig and give the p-value. It really depends on how important the mediation was to the overall narrative.

@m.s.silver3410 Год назад

Hi, thank you for this quick introduction to medmod. Is there a way to test for assumptions for mediation analysis (heteroscedasticity or linear relation) in jamovi? Thanks!

@AlexanderSwan Год назад

You would need to use the linear regression module for those stats, I think.

@m.s.silver3410 Год назад

@@AlexanderSwan Thanks!

@elsaboulard744 Год назад

Thank youuu it was clear ! If I want to draw the model, I need to put the stand estimate to the a, b and c paths ? (sorry for my english, I'm french)

@AlexanderSwan Год назад

Yes correct

@davul01 Год назад

I would like to ask you about what test to use to test the following: I have empathy pathology (scale - 0 - 4/ lowest - highest severity) measured before intervention (group therapy) and after it via a clinical interview. What test do I use to know whether the initial level of anxiety, depression and quality of life (all continuous variables 0 - 63 points) had an effect on the change in empathy pathology (did those with higher level of X change more?); more precisely it's lowering (which I have already observed using paired-sample t-test).

@AlexanderSwan Год назад

Sounds like you’ll wan to do a multiple regression analysis of these continuous variables to see if the anxiety, depression, and quality of life changed or predicts their empathy pathology. That’s what I understand from your comment.

@davul01 Год назад

@@AlexanderSwan Thank you for your answer! Yea that is one way. Was just wondering if it is possible to somehow test effect of those 3 variables on the change between those two measurements (at different times before and after intervention) which were already compared using paired sample t test. I would like to know if indicial level of either of these variables was behind the change in some subject (if high level of anxiety before the therapeutic stay predicted the change in empathy pathology? Would a mediation analysis be appropriate?

@AlexanderSwan Год назад

@@davul01 sorry, I’m honestly not following your description/question. Good luck on your analysis!

@nikolalabudovic5926 Год назад

Hi. Is there a way to do mediation in Jasp or jamovi if I have a categorical or ordinal mediator? I can't find the answer anywhere.

@AlexanderSwan Год назад

I do not believe they can do this right now. Only continuous variables can be used in these models, because they are constrained in the R packages

@nikolalabudovic5926 Год назад

@@AlexanderSwan I actually tried doing it in Jasp and it didn't work, but I was able to do it in Jamovi so yeah, it worked in the end. Thanks for the reply!

@AlexanderSwan Год назад

@@nikolalabudovic5926 I couldn't remember which I had messed with recently! Glad it worked!

@emmav1092 Год назад

Can I also use this with two predictors? Thanks!

@AlexanderSwan Год назад

Not to my knowledge. But it depends on what you mean by predictors.

@emmav1092 Год назад

@@AlexanderSwan I mean two independent variables, one mediator, one dependent variable. I just found out PROCESS is unable to do this, therefore I am searching for another method/program I can use.

@elsaboulard744 Год назад

@@emmav1092 I think you just have to do two mediation models (one for each predictor)