simulation_app {robmedExtra}

Open a 'shiny' app for exploring mediation analysis on simulated data

Description

Open a shiny app for exploring the behavior of various bootstrap procedures for mediation analysis on simulated data.

Usage

simulation_app()

Details

The default settings are similar to one of the simulation designs of Alfons, Ates & Groenen (2022a). You can adjust the total number of observations, the values of the coefficients in the (simple) mediation model, the number of outliers, as well as outlier scaling factors and shifts in the individual variables.

For each selected method, the bootstrap distribution of the indirect effect is shown together with a shaded area representing the 95% confidence interval. If the app does not update quickly enough, try to reduce the number of bootstrap samples.

Value

No return value, the function is called for its side effect of starting a shiny app.

Author(s)

Andreas Alfons

References

Alfons, A., Ates, N.Y. and Groenen, P.J.F. (2022a) A Robust Bootstrap Test for Mediation Analysis. Organizational Research Methods, 25(3), 591–617. doi:10.1177/1094428121999096.

Alfons, A., Ates, N.Y. and Groenen, P.J.F. (2022b) Robust Mediation Analysis: The R Package robmed. Journal of Statistical Software, 103(13), 1–45. doi:10.18637/jss.v103.i13.

Preacher, K.J. and Hayes, A.F. (2004) SPSS and SAS Procedures for Estimating Indirect Effects in Simple Mediation Models. Behavior Research Methods, Instruments, & Computers, 36(4), 717–731. doi:10.3758/bf03206553.

Preacher, K.J. and Hayes, A.F. (2008) Asymptotic and Resampling Strategies for Assessing and Comparing Indirect Effects in Multiple Mediator Models. Behavior Research Methods, 40(3), 879–891. doi:10.3758/brm.40.3.879.

Yuan, Y. and MacKinnon, D.P. (2014) Robust Mediation Analysis Based on Median Regression. Psychological Methods, 19(1), 1–20. doi:10.1037/a0033820.

Zu, J. and Yuan, K.-H. (2010) Local Influence and Robust Procedures for Mediation Analysis. Multivariate Behavioral Research, 45(1), 1–44. doi:10.1080/00273170903504695.

See Also

test_mediation

Examples

## Not run: 

# start graphical user interface
simulation_app()

## End(Not run)