Serge Guimond is emeritus professor of experimental social psychology at Université Clermont Auvergne (previously Université Blaise Pascal) in Clermont-Ferrand, France. He has studied social psychology in Montréal, Québec, Canada (McGill University and Université de Montréal) and in Paris, France (Université Paris Nanterre). He was Director of the CNRS (Centre National de la Recherche Scientifique) Laboratory of Social and Cognitive Psychology in Clermont-Ferrand (UMR 6024) from 2011 to 2015. Editor of Social Comparison and Social Psychology (Cambridge University Press), he is interested in psychology, culture and politics. Armelle Nugier is assistant professor of social psychology at Université Clermont Auvergne. She is head of the CNRS research team on “Social behaviors and collective dynamics” (with Céline Darnon) within the Laboratory of Social and Cognitive Psychology in Clermont-Ferrand. She has published numerous scientific articles and is the author of Les Influences Sociales (Dunod, Second edition) with Peggy Chekroun.

• Part I. Theory: Intergroup Conflicts and Political Violence.- Chapter 1. The Psychology of Religious Extremism: Motivational Aspects.- Chapter 2. Theories of Intergroup Relations: Vicious Cycle between “Us” and “Them”.- Chapter 3. Terrorism as Perceived Group Threat.- Part II. Research: Paris 2015 - Collective Response to Terrorism.- Chapter 4. The Psychological Effects of Terrorist Attacks: Experimental Evidence.- Chapter 5. Public Opinion: Shift in Conservative or Liberal Direction?.- Chapter 6. Predictors of Participation in Collective Action: Who Was Charlie?.- Part III. Policy Implications.- Chapter 7. Blueprint for a Long-Term Goal: Prevention of Political Violence.

Serge Guimond is emeritus professor of experimental social psychology at Université Clermont Auvergne (previously Université Blaise Pascal) in Clermont-Ferrand, France. He has studied social psychology in Montréal, Québec, Canada (McGill University and Université de Montréal) and in Paris, France (Université Paris Nanterre). He was Director of the CNRS (Centre National de la Recherche Scientifique) Laboratory of Social and Cognitive Psychology in Clermont-Ferrand (UMR 6024) from 2011 to 2015. Editor of Social Comparison and Social Psychology (Cambridge University Press), he is interested in psychology, culture and politics. Armelle Nugier is assistant professor of social psychology at Université Clermont Auvergne. She is head of the CNRS research team on “Social behaviors and collective dynamics” (with Céline Darnon) within the Laboratory of Social and Cognitive Psychology in Clermont-Ferrand. She has published numerous scientific articles and is the author of Les Influences Sociales (Dunod, Second edition) with Peggy Chekroun.

• Part I. Theory: Intergroup Conflicts and Political Violence.- Chapter 1. The Psychology of Religious Extremism: Motivational Aspects.- Chapter 2. Theories of Intergroup Relations: Vicious Cycle between “Us” and “Them”.- Chapter 3. Terrorism as Perceived Group Threat.- Part II. Research: Paris 2015 - Collective Response to Terrorism.- Chapter 4. The Psychological Effects of Terrorist Attacks: Experimental Evidence.- Chapter 5. Public Opinion: Shift in Conservative or Liberal Direction?.- Chapter 6. Predictors of Participation in Collective Action: Who Was Charlie?.- Part III. Policy Implications.- Chapter 7. Blueprint for a Long-Term Goal: Prevention of Political Violence.

Serge Guimond is emeritus professor of experimental social psychology at Université Clermont Auvergne (previously Université Blaise Pascal) in Clermont-Ferrand, France. He has studied social psychology in Montréal, Québec, Canada (McGill University and Université de Montréal) and in Paris, France (Université Paris Nanterre). He was Director of the CNRS (Centre National de la Recherche Scientifique) Laboratory of Social and Cognitive Psychology in Clermont-Ferrand (UMR 6024) from 2011 to 2015. Editor of Social Comparison and Social Psychology (Cambridge University Press), he is interested in psychology, culture and politics. Armelle Nugier is assistant professor of social psychology at Université Clermont Auvergne. She is head of the CNRS research team on “Social behaviors and collective dynamics” (with Céline Darnon) within the Laboratory of Social and Cognitive Psychology in Clermont-Ferrand. She has published numerous scientific articles and is the author of Les Influences Sociales (Dunod, Second edition) with Peggy Chekroun.

• Part I. Theory: Intergroup Conflicts and Political Violence.- Chapter 1. The Psychology of Religious Extremism: Motivational Aspects.- Chapter 2. Theories of Intergroup Relations: Vicious Cycle between “Us” and “Them”.- Chapter 3. Terrorism as Perceived Group Threat.- Part II. Research: Paris 2015 - Collective Response to Terrorism.- Chapter 4. The Psychological Effects of Terrorist Attacks: Experimental Evidence.- Chapter 5. Public Opinion: Shift in Conservative or Liberal Direction?.- Chapter 6. Predictors of Participation in Collective Action: Who Was Charlie?.- Part III. Policy Implications.- Chapter 7. Blueprint for a Long-Term Goal: Prevention of Political Violence.