Frimer_OnlineAppendix – Supplemental material for Extremists on the Left and Right Use Angry, Negative Language FrimerJeremy A. BrandtMark J. MeltonZachary MotylMatt 2018 <p>Supplemental material, Frimer_OnlineAppendix for Extremists on the Left and Right Use Angry, Negative Language by Jeremy A. Frimer, Mark J. Brandt, Zachary Melton and Matt Motyl in Personality and Social Psychology Bulletin</p>