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UID:20250626T232916EDT-2733b9sOm0@132.216.98.100
DTSTAMP:20250627T032916Z
DESCRIPTION:Principal Directions of Mediation\n\nMartin Lindquist\, Johns H
 opkins University\n	Tuesday November 24\, 12:30-1:30pm\n	Zoom Link: https://
 mcgill.zoom.us/j/91589192037\n\nAbstract: Mediation analysis is an importa
 nt tool in the behavioral sciences for investigating the role of intermedi
 ate variables that lie in the path between a randomized treatment/exposure
  and an outcome variable. The influence of the intermediate variable on th
 e 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 d
 one on mediation analysis when the intermediate variable (mediator) is a h
 igh-dimensional vector. In this work we introduce a novel method for media
 tion analysis in this setting called the principal directions of mediation
  (PDMs). We demonstrate the method using a functional magnetic resonance i
 maging (fMRI) study of thermal pain where we are interested in determining
  which brain locations mediate the relationship between the application of
  a thermal stimulus and self-reported pain.\n
DTSTART:20201124T173000Z
DTEND:20201124T183000Z
LOCATION:CA\, QC
SUMMARY:QLS Seminar Series - Martin Lindquist
URL:/qls/channels/event/qls-seminar-series-martin-lind
 quist-326144
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