FBI Agent Jack Schafer detects deception and exerts his influence with the Like SwitchEric HunleyDecember 8, 2020
Optimizing the Nonverbal Communication Interview with Former FBI Agent Jack SchaferGiamarcoSeptember 6, 2016
Joe Navarro: A Former FBI Agent's Guide for Speed Readers (Part 1 of Series 3)Satori Prime: Life CoachingApril 28, 2014