The following formula is involved in the calculation of indirect effect values for mediation models:
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Indirect effect for a mediation model:
where a is the regression coefficient for the relationship between the independent variable and the mediator, and b is the regression coefficient for the relationship between the mediator and the dependent variable.
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The following references can be used to cite this indirect effect calculator for mediation models:
| Soper, D.S. (2012) "Indirect Effect Calculator for Mediation Models (Online Software)", http://www.danielsoper.com/statcalc3. |
| Baron, R. M., & Kenny, D. A. (1986) "The moderator-mediator variable distinction in social psychological research: Conceptual, strategic and statistical considerations", Journal of Personality and Social Psychology, Vol. 51, pp. 1173-1182. |
| Sobel, M. E. (1982) "Asymptotic confidence intervals for indirect effects in structural equation models", Sociological Methodology, Vol. 13, pp. 290-312. |
The following statistics calculators are related to this indirect effect calculator for mediation models, and may be useful for your research: