The use of drugs and supplements to enhance performance has become a part of
mainstream athletics. Many team physicians and sports medicine practitioners are unfamiliar …

Eating disorder prevention is a young field that has made significant strides in the past two
decades. It is timely to take a look back at what we have learned during this period in order …

Mediation analysis is a methodology used to understand how and why an independent
variable (X) transmits its effect to an outcome (Y) through a mediator (M). New causal …

This volume introduces the statistical, methodological, and conceptual aspects of mediation
analysis. Applications from health, social, and developmental psychology, sociology …

Researchers often conduct mediation analysis in order to indirectly assess the effect of a
proposed cause on some outcome through a proposed mediator. The utility of mediation …

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 …

The goals of this article are to (a) describe differences between moderator and mediator
effects;(b) provide nontechnical descriptions of how to examine each type of effect, including …

This book will change the way we understand the future of our planet. It is both alarming and
hopeful. James Gustave Speth, renowned as a visionary environmentalist leader, warns that …

Recent advances in testing mediation have found that certain resampling methods and tests
based on the mathematical distribution of 2 normal random variables substantially …

Because of the importance of identifying mediating variables in psychological research,
methods to assess mediation are an area of active research. The purpose of this chapter is …