Questions tagged [mediation]
A mediator is a variable that plays an intermediate role in a causal chain, i.e., the 1st variable in the chain causes the mediator, which in turn causes the 3rd variable. Partial mediation is when the 1st variable causes the 3rd both through the mediator & directly.
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Bayesian Mediation Analysis
I have:
1 binary outcome (0, 1)
1 continuous quantitative mediator
1 continuous quantitative predictor
I would like to compute Bayesian mediation analysis with Liu et al. (2023) method. The formula ...
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Causal mediation analysis via g-computation - why randomly permute the simulated mediator?
I have been reading about causal mediation analysis in settings where there is time-varying confounding of the mediator-outcome relationship. The estimands in question are the randomized analogues of ...
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Testing the effect of a continious IV on DV, in order to explain group differences
I would like to ask a question regarding an analysis I’m planning and it might be a basic question so, apologies in advane.... To describe the situation: There are two groups of participants in my ...
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Can you use a binary outcome variable in a longitudinal latent-growth mediation model
I am wanting to create a LGCM in which I am assessing whether two latent factors (the intercept and slope) mediate the relationship between a continuous predictor and binary outcome variable but am ...
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The difference between conditional and unconditional models when developing a longitudinal mediation latent growth curve analysis
I was just wondering if anyone could advise me on what the definition of an unconditional and conditional model when you are taking a stepwise approach to developing a mediational latent growth curve ...
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Mediation analysis with multiple independent variables
I want to investigate whether M mediates the relationship of multiple independent variables (X1, ...
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Parallel Mediation Model Diagram
I am building a parallel mediation model diagram but am not sure what one of the numbers signifies despite 30 minutes of Goolging.
The number in question is what's in the parenthesis for the c' path —...
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What if path c’ has a negative coefficient, but X - > Y share a moderate to high Spearman correlation?
I am running a mediation model including the variables $X$, $M$, and $Y$.
The Spearman correlation between $X$ and $Y$ is +0.4, while the direct path ...
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Estimating effects in the presence of a mediator
Suppose that one is interested to compare the effect of biological age versus "cognitive age" on a variety of outcomes.
Cognitive age is measured by testing intelligence.
The outcomes are a ...
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multiple Mediated moderation
I am trying to determine if this model represents mediated moderation or moderated mediation and why. I have attached a visual representation of the path diagram for $Y_1=\beta_0 +\beta_{X1}X_1+\beta_{...
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Why all data has to be continuous when using Lavaan for multilevel mediation analysis?
We are conducting a repeated measure experiment with around 40 participants. X has 2 possible values, coded as 1 and 2, representing 2 conditions (so not continuous numeric variable). Within each ...
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Interpreting opposite signs and control/treatment in ACME and ADE in mediation analysis
I have a few questions regarding the interpretation of mediation analysis using the mediation library in R. I'm new to this kind of analysis and I'm having a hard time interpreting them in light of ...
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How to get standardized coefficients of Monte Carlo method for indirect effects in lavaan/semTools?
I've run a path analysis using semTools. I'm interested to test indirect effects. I would like to report the results based on Monte Carlo confidence interval. However, the code ...
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P values non-significant but Monte Carlo confidence interval does not contain zero for indirect effects
I've run a path analysis using semTools. I'm interested to test indirect effects. The p values for all indirect effects were non-significant, but the Monte Carlo confidence interval for some of them ...
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How to cluster standard errors in R studio for mediation model?
I have a simple mediation model:
IV: Experience (binary - yes1/no0)
Mediator: Trust (5 point likert scale measure)
DV: Offer (continuous, values can be anything between 5 and 15)
Each respondent (ID) ...
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