Moderation and Mediation Add-In
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This add-in allows JMP Pro (version 16.0 or later) users to easily specify, fit, and visually probe interactions in three popular models. Tests of significance for simple slopes and Johnson-Neyman boundaries of significance are calculated. A simple slopes plot and a Johnson-Neyman plot is produced.
Users can select from three models: moderation, first-stage moderated mediation, and second-stage moderated mediation. From there, the only required user input is to specify which variable takes each role in the model. Optionally, any number of covariates can be added. All variables must be continuous.
To install the add-in, download it from this page, drag it to an open JMP Pro window, then click “Install.” Alternatively, open JMP Pro, go to File > Open… and navigate to the add-in file.
Click here for more details and an in-depth example.
For more information about these models, users are encouraged to consult these references:
Bauer, D. J., & Curran, P. J. (2005). Probing interactions in fixed and multilevel regression: Inferential and graphical techniques. Multivariate Behavioral Research, 40(3), 373-400.
Hayes, A. F. (2022). Introduction to Mediation, Moderation, and Conditional Process Analysis: A Regression-Based Approach (3rd Ed.). Guilford.
Preacher, K. J., Rucker, D. D., & Hayes, A. F. (2007). Addressing moderated mediation hypotheses: Theory, methods, and prescriptions. Multivariate Behavioral Research, 42(1), 185-227.
To contact the author, email haley.e.yaremych@vanderbilt.edu
Add-In screen shots:
