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- David P. MacKinnon, Chondra M. Lockwood, Jeanne M Hoffman, Stephen G. West, Virgil Sheets
- Psychological methods
- 2002

A Monte Carlo study compared 14 methods to test the statistical significance of the intervening variable effect. An intervening variable (mediator) transmits the effect of an independent variable to… (More)

- Matthew S. Fritz, David P. MacKinnon
- Psychological science
- 2007

Mediation models are widely used, and there are many tests of the mediated effect. One of the most common questions that researchers have when planning mediation studies is, "How many subjects do I… (More)

- David P. MacKinnon, Chondra M. Lockwood, Jason E Williams
- Multivariate behavioral research
- 2004

The most commonly used method to test an indirect effect is to divide the estimate of the indirect effect by its standard error and compare the resulting z statistic with a critical value from the… (More)

- David P. MacKinnon, Amanda J Fairchild, Matthew S. Fritz
- Annual review of psychology
- 2007

Mediating variables are prominent in psychological theory and research. A mediating variable transmits the effect of an independent variable on a dependent variable. Differences between mediating… (More)

- David P. MacKinnon, Jennifer L. Krull, Chondra M. Lockwood
- Prevention Science
- 2000

This paper describes the statistical similarities among mediation, confounding, and suppression. Each is quantified by measuring the change in the relationship between an independent and a dependent… (More)

- Jennifer L. Krull, David P. MacKinnon
- Multivariate behavioral research
- 2001

This article combines procedures for single-level mediational analysis with multilevel modeling techniques in order to appropriately test mediational effects in clustered data. A simulation study… (More)

- David P. MacKinnon, Matthew S. Fritz, Jason E Williams, Chondra M. Lockwood
- Behavior research methods
- 2007

This article describes a program, PRODCLIN (distribution of the PRODuct Confidence Limits for INdirect effects), written for SAS, SPSS, and R, that computes confidence limits for the product of two… (More)

- David P. MacKinnon, Ghulam M Warsi, James H. Dwyer
- Multivariate behavioral research
- 1995

Analytical solutions for point and variance estimators of the mediated effect, the ratio of the mediated to the direct effect, and the proportion of the total effect that is mediated were studied… (More)

- Davood Tofighi, David P. MacKinnon
- Behavior research methods
- 2011

This article describes the RMediation package,which offers various methods for building confidence intervals (CIs) for mediated effects. The mediated effect is the product of two regression… (More)