Charles Negy, Christopher J. Ferguson (Auteur-e) Predicting Radical Progressive Ideology (RPI): Preliminary Findings from an Exploratory Study PDF (Anglais)
Anonymous (Auteur-e) Review of Negy & Ferguson (2025): “Predicting Radical Progressive Ideology (RPI) from Personality and Attitudinal Variables” PDF (Anglais)
Sonia Yanovsky (Auteur-e) The (De)merits of Radical Progressivism: Commentary on Negy & Ferguson (2025) PDF (Anglais)