Principal Directions of Mediation
by prof. Martin Lindquist, School of Public Health, Johns Hopkins University
When: Feb 18th, 2021 – 4:00 pm
Where: Zoom meeting. Recording available on Mediaspace
Abstract: Mediation analysis is an important tool in the behavioral sciences for investigating the role of intermediate variables that lie in the path between a randomized treatment/exposure and an outcome variable. The influence of the intermediate variable on the outcome is often explored using structural equation models (SEMs), with model coefficients interpreted as possible effects. While there has been significant research on the topic in recent years, little work has been done on mediation analysis when the intermediate variable (mediator) is a high-dimensional vector.