Presentations

Presentations for a General Audience:

Van Prooijen, J.-W. (2023). Geloof in complottheorieën. Presented for NPM Capital. 1 December 2023, Amsterdam, the Netherlands.  

Van Prooijen, J.-W. (2023). Conspiracy theories in crisis situations. Presented for EOS. 16 January 2023, Amsterdam, the Netherlands.

Van Prooijen, J.-W. (2022). Belief in conspiracy theories during a pandemic. Presented at the Skeptics Congress, Vienna, 11 September 2022.

Van Prooijen, J.-W. (2022). Nepnieuws en complotten in tijden van crisis. Presented at the Déjà Vu festival, 17 June 2022.

Van Prooijen, J.-W. (2022). Complottheorieën, polarisatie, en crisissituaties. Presented at the PAS festival, Maastricht, 8 June 2022.

Van Prooijen, J.-W. (2021). Complottheorieen tijdens de coronacrisis. Presented for the Wetenschappelijke Raad voor het Regeringsbeleid (WRR; The Netherlands Scientific Council for Government Policy). Online, 19 October 2021.

Van Prooijen, J.-W. (2021). Fake news, conspiracy theories, and radicalization in online social networks. Presented at the EMR-EYES symposium on social media and prevention of radicalization, Verviers, Belgium. 15 October 2021.

Van Prooijen, J.-W. (2021). Wetenschap, complotdenken, en kritisch denken. Lecture in de Balie, Amsterdam. 28 September 2021.

Van Prooijen, J.-W. Geloof in complottheorieën. Children lecture (for 8-12 year olds) at Boerhaave Museum, Leiden. 4 July 2021.

Van Prooijen, J.-W. (2021). Geloof in complottheorieën. Online lecture for AVRO / TROS. 10 June 2021. 

Van Prooijen, J.-W. (2021). Belief in conspiracy theories during a pandemic. Online colloquium, Kwakiutl Symposium. 12 May 2021.

Van Prooijen, J.-W. (2021). Belief in conspiracy theories. Online lecture for ING. 6 May 2021.

Van Prooijen, J.-W. (2021). Complottheorieën tijdens de coronacrisis. Versatile Utrecht, online symposium; Utrecht, 25 March 2021.

Van Prooijen, J.-W. (2021). The polarizing qualities of populist attitudes. Online presentation for the Nuffic-Neso Orange talk series; Jakarta, Indonesia. 26 February 2021

Van Prooijen, J.-W. (2020). Geloof in complottheorieen. Online presentation and Q&A for high school students, organized by WON (Wetenschapsorientatie Nederland), 9 December 2020

Van Prooijen, J.-W. (2020). Belief in conspiracy theories. Online lecture for APG. 25 August 2020.

Van Prooijen, J.-W. (2020). Belief in conspiracy theories. Online lectures for Adyen. 17 June 2020. (2x)

Van Prooijen, J.-W. (2019). Evolutionary roots of conspiracy theories. Seminar and debate, SIB Utrecht, 1 October 2019.

Van Prooijen, J.-W. (2019). De gespannen verhouding tussen wetenschap, complotdenken, en sociale media. Seminar and debate VU vereniging Flevoland, Almere, 26 September 2019.

Van Prooijen, J.-W. (2019). Geloof in complottheorieen. AOG School of Management Seminar, Hilversum, 13 June 2019.

Van Prooijen, J.-W. (2019). Belief in conspiracy theories. Presented at ASPO / KLI “The Social Animal”, Utrecht, 14 March 2019.

Van Prooijen, J.-W. (2018). Belief in conspiracy theories. Funzing talk, 23 February 2018, London, UK.

Van Prooijen, J.-W. (2018). Geloof in complottheorieen. Presented at the Ministry of Justice, 1 February 2018, Den Haag, Netherlands.

 Van Prooijen, J.-W. (2017). Masterclass: Geloof in complottheorieën. Presented at the PCMO-Minstry of the Interior Conference “Uitgepraat of in gesprek? Handvatten voor responsieve bestuurders en ambtenaren”. 28 September 2017, Den Haag, Netherlands.

Van Prooijen, J.-W. (2017). Geloof in complottheorieën. Presented at the Ministry of the Interior, 18 May 2017, Den Haag, Netherlands.

Van Prooijen, J.-W. (2017). Conspiracy theories and extremism. Presented at the RICU workshop “Conspiracy theories, disinformation, and security threats: How should governments respond?”. 15 May 2017, London, UK.

Van Prooijen, J.-W. (2016). De psychologische wortels van geloof in complottheorieen. 10 May 2016, Science café Leiden.

Van Prooijen, J.-W. (2016). De psychologische wortels van geloof in complottheorieen. Presented at the “Workshop complottheorieen” for secondary school teachers, VIP School, 6 September 2016, Gent, Belgium.

Van Prooijen, J.-W. (2015). The psychological origins of belief in conspiracy theories. Skeptics in the pub; 12 October 2015, Amsterdam.

Van Prooijen, J.-W. (2012). Grote gevolgen, grote oorzaken? Geloof in complottheorieën. 12 April 2012, ASPO Blits, Amsterdam.

Van Prooijen, J.-W. (2010). De psychologie van het geloof in complottheorieën. Invited Keynote address; 13 November 2010, Skepsis Congres; Utrecht, the Netherlands.

Invited Keynotes and Colloquia:

Van Prooijen, J.-W. (2023). Belief in conspiracy theories and extremism. Invited Keynote; Brisbane, Australia. 13 October 2023.

Van Prooijen, J.-W. (2023). Belief in conspiracy theories and extremism. Invited Keynote; Bratislava, Slovakia. 27 September 2023.

Van Prooijen, J.-W. (2023). Belief in conspiracy theories. Invited talk for criminology master students, Maastricht University. 12 July 2023.

Van Prooijen, J.W. (2023). Belief in conspiracy theories and extremism. Colloquium University of Groningen, Faculty of Economics and Business. 22 February 2023.

Van Prooijen, J.-W. (2023). Just dead, not alive: Reconsidering belief in contradictory conspiracy theories. Presented at the International Conspiracy Theory Symposium, Miami, USA. 18 March 2023.   

Van Prooijen, J.-W. (2023). Conspiracy theories and polarization in the time of Covid-19. Invited presentation at the “Group Processes & Intergroup Relations” preconference; SPSP conference, Atlanta, USA. 25 February 2023

Van Prooijen, J.-W. (2023). Belief in conspiracy theories and extremism. Colloquium Maastricht University, Law Faculty. 2 February 2023.

Van Prooijen, J.-W. (2023). Belief in conspiracy theories and extremism. ESC working group on radicalization, extremism and terrorism. 26 January 2023 (Online).

Van Prooijen, J.-W. (2022). Belief in conspiracy theories and extremism. FINSCI Symposium on Conspiracy Theory Research, Helsinki, Finland. 26 November 2022.

Van Prooijen, J.-W. (2022). Complottheorieën en extremisme. ICD congres, Leiden. 16 November 2022.

Van Prooijen, J.-W. (2022). Insecurity as driver of anti-establishment sentiments. Presented at the 24th Sydney Symposium of Social Psychology, Visegrad, Hungary. 28 July 2022.

Van Prooijen, J.-W. (2022). The evolutionary roots of conspiracy theories. Online Keynote, HBES conference. 22 June 2022.

Van Prooijen, J.-W. (2022). Belief in conspiracy theories and extremism. Online colloquium at Deakin University, Melbourne, Australia. 20 June 2022.

Van Prooijen, J.-W. (2022). Belief in conspiracy theories during a pandemic. Online Keynote, California State University, Fullerton. 15 March 2022.

Van Prooijen, J.-W. (2022). Belief in conspiracy theories during a pandemic. Online Keynote, John Jay College, the Center on Terrorism. 11 March 2022.

Van Prooijen, J.-W. (2022). Belief in conspiracy theories during a pandemic. Colloquium, VU Amsterdam, Philosophy department. 10 February 2022.

Van Prooijen, J.-W. (2022). Belief in conspiracy theories during a pandemic. Online Brown Bag Lunch, Maastricht University, Psychology department. 2 February 2022.

Van Prooijen, J.-W. (2021). Maatschappelijke onbehagen: Hoe complottheorieen de samenleving polariseren. Presented online for the Sociaal Wetenschappelijke Raad. 11 November 2021.

Van Prooijen, J.-W. (2021). Belief in conspiracy theories during a pandemic. Online Brown Bag Lunch, VU Amsterdam, section social psychology. 16 September 2021.

Van Prooijen, J.-W. (2021). Belief in conspiracy theories during a pandemic. Online colloquium, University of Bochum, Germany. 20 May 2021.

Van Prooijen, J.-W. (2021). Belief in conspiracy theories during a pandemic. Online colloquium, University of Groningen. 27 April 2021.

Van Prooijen, J.-W. (2021). Belief in conspiracy theories during a pandemic. Online colloquium, University of Illinois at Urbana-Champaign. 30 March 2021.

Van Prooijen, J.-W. (2020). Belief in conspiracy theories during a pandemic. Online Keynote address for the workshop “Expectations and expectancy violations: Bridging fields and phenomena”. Philips-Universität Marburg, 25 November 2020.   

Van Prooijen, J.-W. (2020). Belief in conspiracy theories during a pandemic. Online colloquium, New York University. 16 October 2020.

Van Prooijen, J.-W. (2020). Covid-19 and conspiracy theories. Online colloquium. Studium General Eindhoven University. 10 June 2020.

Van Prooijen, J.-W. (2020). The entertainment value of conspiracy theories. Online Brown Bag Lunch, Section Social Psychology, VU Amsterdam. 7 May 2020.

Van Prooijen, J.-W. (2019). Basic principles of conspiracy theories. Colloquium, Institute for European Studies, Université Libre de Bruxelles; 2 December 2019, Brussels, Belgium.  

Van Prooijen, J.-W. (2019). CUES: Basic principles of conspiracy theories. Colloquium Donders Institute, Radboud University Nijmegen; 5 April 2019, Nijmegen, the Netherlands.

Van Prooijen, J.-W. (2018). CUES: Basic principles of conspiracy theories. Colloquium University of Twente; 3 December 2018, Enschede, the Netherlands.

Van Prooijen, J.-W. (2018). CUES: Basic principles of conspiracy theories. Colloquium Tilburg University; 28 September, Tilburg the Netherlands.

Van Prooijen, J.-W. (2018). CUES of conspiracy theories and the relevance of social justice research. Presidential address at the ISJR conference; 27 July 2018, Atlanta, US. 

Van Prooijen, J.-W. (2017). Belief in conspiracy theories. Invited Keynote Address at the conference of the Croatian Psychological Association; 10 November 2017, Zadar, Croatia.  

Van Prooijen, J.-W. (2017). Belief in conspiracy theories. Seminar at Universitas Gadjah Mada; 25 October 2017, Yogjakarta, Indonesia. 

Van Prooijen, J.-W. (2016). Belief in conspiracy theories. Colloquium at London Business School; 24 November 2016, London, UK.

Van Prooijen, J.-W. (2016). Belief in conspiracy theories: Origins and implications. Invited presentation; Justice & Morality Preconference, 28 January 2016; at SPSP, San Diego, US.  

Van Prooijen, J.-W. (2015). The psychological origins of belief in conspiracy theories. Invited colloquium; 17 December 2015; Labyrinth Leiden International Students; Leiden, The Netherlands.

Van Prooijen, J.-W. (2015). The social dimension of belief in conspiracy theories. Faculty colloquium; 12 May 2015; VU University Amsterdam.

Van Prooijen, J.-W. (2015). The social dimension of belief in conspiracy theories. Invited colloquium; 4 May 2015; IESEG School of Management, Paris, France.

Van Prooijen, J.-W. (2014). The social dimension of belief in conspiracy theories. Invited colloquium; 21 March 2014, Universite Libré de Bruxelles, Brussels, Belgium.

Van Prooijen, J.-W. (2013). The social dimension of belief in conspiracy theories. Invited colloquium; 18 December 2013. Philipps University, Marburg, Germany.

Van Prooijen, J.-W. (2013). Political extremity, uncertainty, and belief in conspiracy theories. Invited colloquium; 22 April 2013, University of Kent, Canterbury, UK.

Van Prooijen, J.-W. (2012). Individualistic and social motives for justice. Invited colloquium; 15 March 2012, University of Geneva, Switserland.

Van Prooijen, J.-W. (2011). Egocentric versus social aspects of justice judgments. Invited colloquium; 5 October 2011, NSCR, Amsterdam, the Netherlands.

Van Prooijen, J.-W. (2011). Political paranoia: The social dimension of belief in conspiracy theories. Invited presentation for summer internship students; 25 August 2011, VU University Amsterdam, the Netherlands.

Van Prooijen, J.-W. (2010). Individualistic features of justice concerns. Invited colloquium; 22 April 2010, University of Berne, Switserland.

Van Prooijen, J.-W. (2009). Perceptions of evilness: The sense-making function of belief in conspiracy theories. Invited colloquium, UCP-FCEE, Lisbon, Portugal.

Van Prooijen, J.-W. (2009). Individualistic features of justice concerns. Invited colloquium, University of Illinois at Chicago (UIC), Chicago, USA.

Van Prooijen, J.-W. (2009). Individualistic features of procedural justice. Invited presentation at the SPSP Justice pre-conference, Tampa, USA.

Van Prooijen, J.-W. (2008). Individualistic features of justice concerns. Invited colloquium, UCP-FCEE. Lisbon, Portugal.

Van Prooijen, J.-W. (2008). Procedural justice and trust in social interaction. Invited presentation at the ESF international workshop “Science and technology of agreement”, Barcelona, Spain.

Van Prooijen, J.-W. (2007). Egocentrism in justice judgments. Invited colloquium; Utrecht University; Tilburg University; and Leiden University.

Van Prooijen, J.-W. (2006). Motivational principles of procedural justice. Award Keynote Address, presented at the 11th ISJR conference, Berlin, Germany.

Van Prooijen, J.-W. (2006). The motivational nature of procedural justice. Invited Colloquium, Department of Work & Organizational Psychology, University ofAmsterdam.

Van Prooijen, J.-W., Karremans, J. C., & Van Beest, I. (2005). Procedural justice and the hedonic principle: How approach motivation influences the psychology of voice. Invited presentation, KLI-meeting, Utrecht University.

Van Prooijen (2004). Retributive versus restorative justice. Invited Colloquium, VU University Amsterdam.

Van Prooijen, J.-W. (2004). De psychologie van distributieve en procedurele rechtvaardigheid. Invited Guest Lecture, Leiden University.

Van Prooijen, J.-W. (2003). Procedurele rechtvaardigheid. Invited Guest Lecture, Leiden University.

Van Prooijen, J.-W. (2002). Sociale status en waargenomen eerlijkheid: Informatie over status als antecedent van het eerlijkproceseffect. Invited Colloquium, VU University Amsterdam.

Van Prooijen, J.-W. (2002). Knowing where we stand enhances reactions to fairness: On the psychology of status and procedural justice. Invited Colloquium, Catholic University of Tilburg.

Van Prooijen, J.-W. (2002). Sociale status en waargenomen eerlijkheid: Informatie over status als antecedent van het eerlijkproceseffect. Invited Colloquium, University of Groningen.

Van Prooijen, J.-W. (2002). The role of status in the psychology of procedural fairness: Knowing where we stand enhances reactions to fairness. Invited Colloquium, Tulane University, New Orleans, USA; and New York University, New York, USA.

Conference (and other) presentations:

Van Prooijen, J.-W. (2023). Just dead, not alive: Reconsidering belief in contradictory conspiracy theories. Presented at the ISJR conference, Munich, Germany. 26 July 2023.

Van Prooijen, J.-W. (2023). Just dead, not alive: Reconsidering belief in contradictory conspiracy theories. Presented at the EASP preconference on conspiracy beliefs, Krakow, Poland. 30 June 2023.

Van Prooijen, J.-W. (2023). Just dead, not alive: Reconsidering belief in contradictory conspiracy theories. Presented at the SPSP conference, Atlanta, USA. 23 February 2023.  

Van Prooijen, J.-W. (2022). Just dead, not alive: Reconsidering belief in contradictory conspiracy theories. Coffee Pitch, NSCR, Amsterdam; 26 September 2022.

Van Prooijen, J.-W. (2022). Just dead, not alive: Reconsidering belief in contradictory conspiracy theories. Miniconference Social Psychology section, VU Amsterdam; 11 May 2022.

Van Prooijen, J.-W. (2022). The entertainment value of conspiracy theories. Online presented for the SPSP Conference, San Francisco, US; 19 February 2022.  

Van Prooijen, J.-W. (2021). The entertainment value of conspiracy theories. Online presented for the EASP Small Group Meeting Social Implications of Conspiracy Theories; 19 November 2021.  

Van Prooijen, J.-W. (2021). The long-term implications of conspiracy theories during a pandemic. Online presented at the KLI conference; 20 April 2021.

Van Prooijen, J.-W., & Vonk, R. (2021). Conspiracy theories and the superior self. Online presented at the social regulation lab, Radboud University Nijmegen; 19 April 2021.

Van Prooijen, J.-W. (2020). Groups, culture, and conspiracy theories. Online presentation, NSCR; 2 July 2020.

Van Prooijen, J-W. (2020). Covid-19 conspiracy theories. Online Coffee Pitch. NSCR, Amsterdam; 22 June 2020).

Van Prooijen, J.-W. (2019). Discussant talk. At the workshop “Emotions in European foreign policy at populist times”, 21 November 2019, VU Amsterdam.

Van Prooijen, J.-W. (2019). Evolutionary roots of conspiracy theories. Presented at the COST action conspiracy theory conference; 20 September 2019, Prague, Czech Republic.

Van Prooijen, J.-W. (2019). Belief in conspiracy theories and populist attitudes: The role of general credulity. Presented at ISPP conference; 15 July 2019, Lisbon, Portugal.

Van Prooijen, J.-W. (2019). Conspiracy theories predict populist attitudes and xenophobia. Presented at the APS conference; 25 May 2019, Washington DC, US.

Van Prooijen, J.-W. (2019). Gullible populism. Presented at the departmental miniconference, 18 April 2019, VU Amsterdam.

Van Prooijen, J.-W. (2018). Belief in conspiracy theories: Gullibility or rational skepticism? Presented at the Sydney Symposium of Social Psychology; 5 July 2018, Visegrad, Hungary.

Van Prooijen, J.-W., Staman, J., & Krouwel, A. P. M. (2018). Increased conspiracy beliefs among ethnic and Muslim minorities. Presented at the departmental miniconference, 26 April 2018, VU Amsterdam.

Van Prooijen, J.-W., Krouwel, A. P. M., & De Looze, L. (2017). Overclaiming knowledge predicts anti-establishment voting. Presented at the departmental miniconference, 30 March 2017, VU Amsterdam.

Van Prooijen, J.-W. (2016). How to reduce belief in conspiracy theories. Presented at the ISJR conference, 22 July 2016; Canterbury, UK.

Van Prooijen, J.-W., Douglas, K., & De Inocencio, C. (2016). Paranoid cognition: Illusory pattern perception predicts belief in conspiracy theories. Presented at the ISJR conference, 21 July 2016; Canterbury, UK.

Van Prooijen, J.-W., Krouwel, A., & Pollet, T. (2016). Political extremism predicts belief in conspiracy theories. Presented at the ISPP conference, 16 July 2016; Warsaw, Poland.

Van Prooijen, J.-W., Douglas, K., & De Inocencio, C. (2016). The origins of political paranoia: Illusory pattern perception predicts belief in conspiracy theories. Presented at the ISPP conference, 14 July 2016; Warsaw, Poland.

Van Prooijen, J.-W., Douglas, K., & De Inocencio, C. (2016). Connecting the dots: Illusory pattern perception predicts belief in conspiracy theories. Presented at COST Action Conference “Agents through time”, 8 July 2016; Limerick, Ireland. 

Van Prooijen, J.-W., Douglas, K., & De Inocencio, C. (2016). Connecting the dots: Illusory pattern perception predicts irrational beliefs. Presented at the departmental miniconference, VU Amsterdam.

Van Prooijen, J.-W., & Krouwel, A. P. M. (2015). The rigidity of the extremes. Paper presented at the ASPO conference, 11 December 2015, Amsterdam, the Netherlands.

Van Prooijen, J.-W., Krouwel, A. P. M., & Pollet, T. (2015). Political extremism predicts belief in conspiracy theories. Paper presented at the Political Psychology Amsterdam conference; 4 July 2015, Amsterdam, the Netherlands.

Van Prooijen, J.-W. (2015). Psychology of political extremism. Presented at VU-S&O—TNO “meet and greet”; 5 June 2015; VU University Amsterdam.

Van Prooijen, J.-W. (2015). Ideological extremism. Presented at the A-Lab meeting,  NSCR; 29 May 2015; Amsterdam, the Netherlands.

Van Prooijen, J.-W. (2015). The rigidity of the extremes. Presented at the departmental mini-conference, 13 May 2015, VU University Amsterdam.

Van Prooijen, J.-W., & Krouwel, A. P. M. (2015). Mutual suspicion at the political extremes: How ideology predicts conspiracy beliefs. Presented at the Conspiracy Theory Conference, 14 March 2015, Miami, Fl., USA.

Van Prooijen, J.-W., Eib, C., & Nadisic, T. (2014). The paradoxical effects of happiness on punishment. Presented at the ASPO conference; 11 December 2014, Groningen, the Netherlands.

Van Prooijen, J.-W., Coffeng, J., & Vermeer, M. (2014). Power and retributive justice: How trait information influences the fairness of punishment among power holders. Paper presented at the EASP conference; 11 July 2014, Amsterdam, the Netherlands.

Van Prooijen, J. W. (2014). Discussant at symposium “Collective regulation: Group-level function of moral judgment”. At the ISJR conference; 22 June 2014, New York City, NY, USA.

Van Prooijen, J.-W., Krouwel, A. P. M., & Pollet, T.  (2014). Political extremity predicts belief in conspiracy theories. Paper presented at the ISJR conference; 21 June 2014, New York City, NY, USA.

Van Prooijen, J.-W. (2014). The influence of discrete emotions on punishment. Presented at the departmental mini-conference, 8 April 2014, VU University Amsterdam.

Van Prooijen, J.-W. (2013). De sociale dimensie van geloof in complottheorieën. Invited presentation; 8 November 2013, SPS-NIP congres, Maarssen, the Netherlands.

Van Prooijen, J.-W. (2013). Political extremity predicts belief in conspiracy theories. Paper presented at the Departmental miniconference, 25 April 2013, VU University Amsterdam.

Van Prooijen, J. W. (2013). On the relation between narcisissm and conspiracy beliefs. Paper presented at the Personality Psychology Conference, 23 March 2013, Stellenbosch, South Africa.

Van Prooijen, J.-W. (2013). Political Extremity predicts belief in conspiracy theories. Invited presentation, 25 February 2013, NSCR, Amsterdam.

Van Prooijen, J.-W. (2012). Individualistic and social motives for justice. Invited presentation, 12 November 2012; at the conference “Neuroethics: From Lab to Law”, Barcelona, Spain.

Van Prooijen, J.-W (2012). Making sense of collective victimization: Narcissism and communal concerns predict belief in conspiracy theories. Presented at the ISJR conference, 10 September 2012, Rishon LeZion, Israel.

Van Prooijen, J.-W., Coffeng, J., & Vermeer, M. (2012). Power and retributive justice: Negative trait information influences the fairness of punishment among power holders. Paper presented at the Round Table of Organizational Justice Research, Nice, France; 8 June 2012; and at the ISJR conference, 8 September 2012, Rishon LeZion, Israel.

Van Prooijen, J.-W., & IJzerman, H. (2012). Self-inflated, social, and suspicious: Communal concerns predict conspiracy beliefs among narcissists. Departmental mini-conference, VU University Amsterdam; 20 April 2012.  

Van Prooijen, J.-W. (2012). The big cause effect: Perspective taking and consequence size predict belief in conspiracy theories. Paper presented at the PIDOP conference, Guildford Surrey, UK; 17 April 2012; at the ISPP conference, Chicago, US; 6 July 2012; and at the Power, Politics, and Paranoia meeting, Amsterdam, the Netherlands; 13 July 2012.

Van Prooijen, J.-W. (2011). Belief in conspiracy theories as a sense-making tool in response to just world threats. Paper presented at the EASP conference, Stockholm, Sweden; 14 July 2011.

Van Prooijen, J.-W., Ståhl, T., Eek, D., & Van Lange, P. A. M. (2010). Injustice for all or just for me? Social value orientation predicts responses to own and other’s procedures. Paper presented at the 13th ISJR conference, Banff, Canada; 23 August 2010; and at SIOP conference, Chicago, USA; 16 April 2011.

Van Prooijen, J.-W. (2010). Just world threats cause paranoia: The sense-making function of belief in conspiracy theories. Paper presented at the 13th ISJR conference, Banff, Canada; 23 August 2010.

Van Prooijen, J.-W. (2010). Procedural justice as autonomy regulation. Invited presentation; 15 May 2010, at the 4th International Conference on Self-Determination Theory; Ghent University, Belgium. 

Van Prooijen, J.-W. (2010). Suspicions of immorality: The sense-making function of belief in conspiracy theories. Invited presentation; 15 April 2010, KLI conference, Zeist.

Van Prooijen, J.-W., & Jostmann, N. (2009). Suspicions of injustice: The sense-making function of belief in conspiracy theories. Invited presentation at the symposium “The potential of justice research for conflict resolution and the understanding of societal problems”, Eichstätt, 16 October 2009,Germany.

Van Prooijen, J.-W., & Jostmann, N. (2009). The evil empire: Need for control and perceived morality predict belief in conspiracy theories. Paper presented at the 1st workshop on Organizational Justice and Behavioural Ethics, Lyon, France.

Van Prooijen, J.-W. (2008). Egocentrism in procedural justice effects. Paper presented at the Round Table of Organizational Justice Research, Lisbon, Portugal.

Van Prooijen, J.-W. (2008). Procedural justice as autonomy regulation. Paper presented at the EAESP conference, Opatija, Croatia; and at the 12th ISJR conference, Adelaide, Australia.

Van Prooijen, J.-W. (2006). Retributive reactions to suspected offenders: The importance of social categorizations and guilt probability. Paper presented at the 11th ISJR conference, Berlin, Germany.

 Van Prooijen, J.-W. (2006). A victim / observer effect in preferences for retributive and compensatory justice. Paper presented at the 11th ISJR conference, Berlin, Germany.

 Zwenk, F., & Van Prooijen, J.-W. (2006). Voice by representation: Effects of indirect voice.  Paper presented at the 11th ISJR conference, Berlin, Germany.

Kerpershoek, E. F. P., & Van Prooijen, J. W. (2005). De invloed van autonomie op retributieve reacties: Een zoektocht naar de oorsprong van het bestraffen van normovertreders. Paper presented at the ASPO conference, Groningen, the Netherlands.

Van Prooijen, J.-W. (2004). Retributive versus restorative justice: Is punishing offenders more important than compensating victims? Paper presented at the Xth ISJR social justice conference, Regina, Canada, and in 2005 at the EAESP conference, Würzburg, Germany.

Van Prooijen, J.-W. (2004). Retributive versus restorative justice. Poster presentation at the SPSSI conference, Washington DC, USA.

Van Prooijen, J.-W., & Karremans, J. C. (2004). On the nature of voice: Approach and avoidance motor actions influence reactions to procedures. Paper presented at the Xth ISJR social justice conference, Regina, Canada.

Zwenk, F., & Van Prooijen, J.-W. (2004). We versus they: The role of group belongingness in the relation between situational uncertainty and procedural justice. Paper presented at the Xth ISJR conference, Regina, Canada.

Van Prooijen, J.-W. (2002). Groepsdynamische foci van rechtvaardigheid. PhD student meeting, Free University Amsterdam.

Van Prooijen, J.-W., Van den Bos, K., & Wilke, H .A. M. (2002). Procedural justice and status: Status salience as antecedent of procedural fairness effects. Paper presented at the ‘IXth international social justice conference’, June 2002, Skovde, Sweden.

Van Prooijen, J.-W., Van den Bos, K., & Wilke, H .A. M. (2002). Group belongingness and procedural justice: Social inclusion and exclusion by peers affects the psychology of voice. Paper presented at the ‘IXth international social justice conference’, June 2002, Skovde, Sweden.

Van Prooijen, J.-W., Van den Bos, K., & Wilke, H .A. M. (2002). Procedural justice in interdependent relations: How reactions to voice are affected by dependence on authorities. Paper presented at the ‘IXth international social justice conference’, June 2002, Skovde, Sweden.

Van Prooijen, J.-W., Van den Bos, K., & Wilke, H .A. M. (2002). Procedural justice and status: Status salience as antecedent of the fair process effect. Paper presented at the ‘13th general meeting of the EAESP’, June 2002, San   Sebastian, Spain.

Van Prooijen, J.-W., Van den Bos, K., & Wilke, H. A. M. (2001). A group dynamics focus model of procedural justice. Paper presented at the “International Round Table on Innovations in Organizational Justice”, Vancouver, Canada.

Van Prooijen, J.-W., Van den Bos, K., & Wilke, H. A. M. (2001). Procedurele rechtvaardigheid en status: Nadenken over status versterkt het eerlijkproceseffect. Paper presented at the ASPO-conference, Tilburg.

Van Prooijen, J.-W., Van den Bos, K., & Wilke, H. A. M. (2000). Interdependentie en procedurele rechtvaardigheid: Hoe nemen mensen inspraak waar als ze afhankelijk zijn van autoriteiten? Paper presented at the ASPO-conference, Eindhoven, and at a PhD student meeting, VU University Amsterdam.

Van Prooijen, J.-W., Van den Bos, K., & Wilke, H. A. M. (2000). Procedural justice in interdependent relations: How perceptions of voice are affected by dependence on authorities. Paper presented at the KLI-workshop “How to present”, Amsterdam.

Van Prooijen, J.-W., Van den Bos, K., & Wilke, H. A. M., & Lind, E. A. (2000). What is unfair? The role of bias in the psychology of procedural injustice. Paper presented at the “VIII Biennial Conference of the Society for Justice Research”, Rishon LeZion, Israel.

Van Prooijen, J.-W., Van den Bos, K., & Wilke, H. A. M., & Lind, E. A. (1999). What is unfair? The role of bias in the psychology of procedural injustice. Paper presented at the KLI-conference, Soesterberg.

Van Prooijen, J.-W., Van den Bos, K., & Wilke, H. A. M., & Lind, E. A. (1999). On the moderating role of authority’s biased attitudes in people’s reactions to negative procedures. Paper presented at theKLI – workshop “Organizational behavior and ethics”, Leiden University.

Van Prooijen, J.-W., Van den Bos, K., & Wilke, H. A. M. (1999). De invloed van partijdigheid op waargenomen procedurele rechtvaardigheid. Paper presented at the ASPO – conference, Nijmegen.

Van Prooijen, J.-W., & Van Knippenberg, D. (1999). Individuation or depersonalization: The influence of personal status position. Paper presented at the ‘12th EAESP general meeting’, Oxford, UK.

Van Prooijen, J.-W., & Van Knippenberg, D. (1998). Individuatie of depersonalisatie: De invloed van persoonlijke statuspositie. Paper presented at the ASPO - conference, Amsterdam.