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Dr. A.R. (Allard) Feddes

Faculty of Social and Behavioural Sciences
Programme group Social Psychology
Photographer: Allard Feddes

Visiting address
  • Nieuwe Achtergracht 129
  • Room number:2.30
Postal address
  • Postbus 15900
    1001 NK Amsterdam
  • Profile

    Research Interests

    • Radicalization, de-radicalization and terrorism
    • Populism
    • Immigration
    • Stereotyping, discrimination, racism
    • Group conflict and cooperation
    • Evaluation of interventions


    Allard R. Feddes is an Assistant Professor at the Social Psychology department of the University of Amsterdam. Allard studied Social Psychology and Organizational Psychology at the University of Groningen, the Netherlands (1998-2004). In this period he participated in the ERASMUS exchange programme and studied at the National University of Maynooth, Ireland (Sociology and Philosophy). For his MA thesis studies he spent six months at the Psychology Department of Simon Fraser University in Vancouver, Canada. Allard did his PhD in Social Psychology at the International Graduate College "Conflict and Cooperation between Social Groups" at the Friedrich-Schiller-University Jena (Germany, 2004-2007) where he studied associations between intergroup contact and development of prejudice in ethnic majority and minority children. In the period 2007-2011 he worked as a post-doctoral researcher at the Social Psychology department of ISCTE-IUL (Lisbon University Institute) in Lisbon, Portugal, where he studied development of prejudice, stereotyping, and perceptions of social status in Portuguese children of different ethnic background. Since 2011 he has studied processes of (de-)radicalisation at the University of Amsterdam and the University of Milano-Bicocca (Italy, in 2014-2015). Allard is broadly interested in how group membership influences our thinking (cognition), feeling (affect) and behaviour. 



    Fundamentals of Psychology (Introduction course in Psychology, PPLE Bachelor Programme)

    Emotions (PPLE Bachelor Programme)

    Political Psychology (PPLE Bachelor Programme)

    Applying Research Methods (MA level course, Department of Social Psychology)


    Supervision of Bachelor and Master theses (Department of Social Psychology)

    Supervision of PhD students (Department of Social Psychology)


    Supervision of internships of Cultural Psychology and Social Influence Mastertrack students (Department of Social Psychology)

    Administrative tasks

    Coordinator of internships of the Mastertracks Cultural Psychology and Social Influence at the Department of Social Psychology. 

    Coordinator of master theses of the Mastertracks Cultural Psychology, Social Influence, and Training and Development at the Department of Social Psychology. 

    Member of the Programme Committee (Opleidingscommissie, OC) of the Graduate School of Psychology 

  • Publications


    • van Bergen, D. D., Feddes, A. R., & de Ruyter, D. (2021). Perceived discrimination against Dutch Muslim youths in the school context and its relation with externalising behaviour. Oxford Review of Education.



    • Feddes, A. R., Huijzer, A., van Ooijen, I., & Doosje, B. (2019). Fortress of Democracy: Engaging Youngsters in Democracy Results in More Support for the Political System. Peace and Conflict : Journal of Peace Psychology, 25(2), 158-164. [details]
    • Reches, L. H. L., & Feddes, A. R. (2019). Similarity attracts: The role of personality in similarity perceptions and children's attitudes towards refugees. British Journal of Developmental Psychology, 37(4), 447-460. [details]
    • van Bergen, D. D., Wachter, G. G., & Feddes, A. R. (2019). Externalizing behaviours of Turkish-Dutch and Moroccan-Dutch youth: The role of parental cultural socialization. The European Journal of Developmental Psychology, 16(1), 18-31. [details]


    • Macdougall, A. I., van der Veen, J., Feddes, A. R., Nickolson, L., & Doosje, B. (2018). Different Strokes for Different Folks: The Role of Psychological Needs and Other Risk Factors in Early Radicalisation. International Journal of Developmental Science, 12(1-2), 37-50. [details]


    • Doosje, B., de Wolf, A. B., Mann, L., & Feddes, A. R. (2017). Radicalisering en de-radicalisering. In P. J. van Koppen, J. W. de Keijser, R. Horselenberg, & M. Jelicic (Eds.), Routes van het recht: Over de rechtspsychologie (pp. 131-146). Den Haag: Boom juridisch. [details]
    • Feddes, A. R. (2017). Risico-inschatting in een integraal veiligheidsbeleid. In L. Colaert (Ed.), ‘Deradicalisering’: Wetenschappelijke inzichten voor een Vlaams beleid (pp. 49-64). Brussel: Vlaams Vredesinstituut. [details]
    • Jugert, P., & Feddes, A. R. (2017). Children's cross-ethnic friendships: Antecedents and consequences. In A. Rutland, D. Nesdale, & C. S. Brown (Eds.), The Wiley Handbook of Group Processes in Children and Adolescents (pp. 373-392). (Wiley handbooks of developmental psychology). Chichester: Wiley Blackwell. [details]
    • Mann, L., Feddes, A. R., Leiser, A., Doosje, B., & Fischer, A. H. (2017). When is Humiliation More Intense? The Role of Audience Laughter and Threats to the Self. Frontiers in Psychology, 8, [495]. [details]


    • António, J. H., Correia, R., Feddes, A. R., & Morais, R. (2016). Creating a More Inclusive Society: Social-Developmental Research on Intergroup Relations in Childhood and Adolescence. In J. Vala, S. Waldzus, & M. M. Calheiros (Eds.), The social developmental construction of violence and intergroup conflict (pp. 197-218). Cham: Springer International Publishing.. [details]
    • Doosje, B., Moghaddam, F. M., Kruglanski, A. W., de Wolf, A., Mann, L., & Feddes, A. R. (2016). Terrorism, radicalization, and de-radicalization. Current Opinion in Psychology, 11, 79-84. [details]
    • Mann, L., Feddes, A. R., Doosje, B., & Fischer, A. H. (2016). Withdraw or affiliate? The role of humiliation during initiation rituals. Cognition & Emotion, 30(1), 80-100. [details]


    • Feddes, A. R., & Gallucci, M. (2015). A literature review on methodology used in evaluating effects of preventive and de-radicalisation interventions. Journal for Deradicalization, 5(4), 1-27. [details]
    • Feddes, A. R., Mann, L., & Doosje, B. (2015). Increasing self-esteem and empathy to prevent violent radicalization: a longitudinal quantitative evaluation of a resilience training focused on adolescents with a dual identity. Journal of Applied Social Psychology, 45(7), 400-411. [details]
    • van Bergen, D. D., Feddes, A. F., Doosje, B., & Pels, T. V. M. (2015). Collective identity factors and the attitude toward violence in defense of ethnicity or religion among Muslim youth of Turkish and Moroccan descent. International Journal of Intercultural Relations, 47, 89-100. [details]


    • Arriaga, P., Esteves, F., & Feddes, A. R. (2014). Looking at the (mis) fortunes of others while listening to music. Psychology of Music, 42(2), 251-268. [details]
    • Feddes, A. R., Monteiro, M. B., & Justo, M. G. (2014). Subjective social status and intergroup attitudes among ethnic majority and minority children in Portugal. British Journal of Developmental Psychology, 32(2), 125-140. [details]


    • Doosje, B., van den Bos, K., Loseman, A., Feddes, A. R., & Mann, L. (2012). "My in-group is superior!": susceptibility for radical right-wing attitudes and behaviors in Dutch youth. Negotiation and Conflict Management Research, 5(3), 253-268. [details]
    • Feddes, A. R., Mann, L., & Doosje, B. (2012). From extreme emotions to extreme actions: explaining non-normative collective action and reconciliation. Behavioral and Brain Sciences, 35(6), 432-433. [details]


    • Turner, R. N., & Feddes, A. R. (2011). How intergroup friendship works: a longitudinal study of friendship effects on outgroup attitudes. European Journal of Social Psychology, 41(7), 914-923. [details]


    • Feddes, A. R., Noack, P., & Rutland, A. (2009). Direct and extended friendship effects on minority and majority children’s intergroup attitudes: A Longitudinal Study. Child Development, 80(2), 377-390.


    • Feddes, A. R., & Jonas, K. J. (2016). LGBT Hate Crime, Psychological Well-Being, and Reporting Behaviour: LGBT Community and Police Perspectives. Amsterdam: University of Amsterdam. [details]


    • Feddes, A. R., Mann, L., & Doosje, B. (2013). Scientific Approach to Formulate Indicators & Responses to Radicalisation. Empirical study. SAFIRE. [details]
    • Marret, J. L., Feddes, A. R., Mann, L., Doosje, B., & Griffioen-Young, H. (2013). An overview of the SAFIRE project: a scientific approach to finding indicators of and responses to radicalisation. Journal EXIT-Deutschland: Zeitschrift für Deradikalisierung und demokratische Kultur, 1(2), 123-148. [details]


    • Feddes, A. R., Babetti, H. J., Jonas, K. J., & Cremer, S. (2020). LHBTI 65+ gezondheid in beeld: Lichamelijk en psychologisch welzijn van LHBTI 65+ inwoners van Amsterdam . In LHBTI 65+ gezondheid in beeld: Lichamelijk en psychologisch welzijn van LHBTI 65+ inwoners van Amsterdam


    • Knape, S. J., & Feddes, A. R. (2017). Literatuur om bruggen te bouwen: Een voorleesinterventie in de klas ter voorbereiding van positief contact met vluchtelingenkinderen. Literatuur zonder Leeftijd, 31(103), 130–147. [details]
    • Wallner, T., van Emmerik, A. A. P., Feddes, A. R., Fischer, A. H., & Doosje, B. (2017). Trauma, veerkracht en integratie: Een onderzoek naar de relatie tussen traumatische gebeurtenissen, posttraumatische stress, geestelijke gezondheid, veerkracht en integratie van vluchtelingen in Nederland. Amsterdam: Universiteit van Amstersdam. [details]



    • Feddes, A. R., Nickolson, L., & Doosje, B. (2015). Triggerfactoren in het radicaliseringsproces. Amsterdam: Expertise-unit Sociale Stabiliteit, Universiteit van Amsterdam. [details]


    • Feddes, A. R., & Mann, L. (2013). Versterking van zelfvertrouwen en countering social isolation: Effect evaluation of training DIAMANT. SAFIRE.
    • Feddes, A. R., Mann, L., & Doosje, B. (2013). Does it work? How to evaluate effectiveness of a programme preventing radicalisation. SAFIRE. [details]
    • Feddes, A. R., Mann, L., & Doosje, B. (2013). Final report for EU of empirical study of the SAFIRE-project on processes of radicalisation: a quantitative and qualitative analysis of the radicalisation process. Deliverable WP 5.1. Universiteit van Amsterdam.
    • Feddes, A. R., Mann, L., & Doosje, B. (2013). Key socio-psychological factors in preventive and suppressive interventions. SAFIRE. [details]
    • Feddes, A. R., Mann, L., de Zwart, N., & Doosje, B. (2013). Duale identiteit in een multiculturele samenleving: een longitudinale kwalitatieve effectmeting van de weerbaarheidstraining Diamant. Tijdschrift voor Veiligheid, 12(4), 27-44. [details]
    • Havermans, B. M., Feddes, A. R., & Doosje, B. (2013). An interview study on the effects of a train-the-trainer programme. SAFIRE. [details]


    • Wolf, S. A., & Feddes, A. R. (2016). Perceptions matter more than observations: Different operationalizations of team unity and their relationship to individual and team outcomes.. Poster session presented at Annual meeting of the North American Society for the Psychology of Sport and Physical Activity, Montréal, Québec, Canada.


    • Feddes, A. (2019-2020). Member of advisory committee project "Overkoepelende evaluatie culturele interventies [Evaluation of cultural interventions]”., Ministry of Work and Social affairs / Risbo (Erasmus Universiteit)..


    • Feddes, A. R. (participant) (10-2018 - 3-2020). Advisor on project "Needs of hate-crime victims in the justice process and social support". Wetenschappelijk Onderzoek- en Documentatiecentrum. (other).
    • Vauclair, C.-M. (participant), Rodrigues, R. B. (participant), Feddes, A. R. (participant) & Podsiadlowski, A. (participant) (9-7-2018 - 14-7-2018). European Science Open Forum (ESOF), Toulouse, France, Toulouse. A society for all? From prejudice and discrimination to social inclusion in a globalized world. Symposium organised at Europeanscience Open Forum (…) (organising a conference, workshop, ...).
    • Sauter, D. A. (participant), Fischer, A. H. (participant) & Feddes, A. R. (participant) (18-11-2017). Zwarte Markt voor de Kennis, Universiteit van Amsterdam (other).
    • Doosje, B. (organiser) & Feddes, A. R. (organiser) (3-12-2015 - 4-12-2015). Political Psychology Conference, Amsterdam. Organizers of the symposium: What Events lead to radicalization and how can we make people resilient? (organising a conference, workshop, ...).
    • Doosje, B. (organiser), Feddes, A. R. (organiser), Mann, L. (organiser) & Dobber, S. (organiser) (2015). Political Psychology conference, Universiteit van Amsterdam. Organizers of the symposium 'Processes of radicalisation.' (organising a conference, workshop, ...).
    • Feddes, A. R. (organiser) & Aarts, W. (organiser) (7-11-2013). Evaluation of interventions to counter radicalisation. Workshop given during the SAFIRE End Event Symposium on Finding Indicators of and Responses to Radicalisation, Amsterdam, November 7. (organising a conference, workshop, ...).
    • Weggemans, A. (organiser), Feddes, A. R. (organiser) & Cahuzac, O. (organiser) (7-11-2013). SAFIRE End Event Symposium on Finding Indicators of and Responses to Radicalisation, Amsterdam, November 7. (organising a conference, workshop, ...).
    • Griffioen-Young, H. (organiser), Feddes, A. R. (organiser), Goetz, P. (organiser), Reding, A. (organiser) & Weggemans, A. (organiser) (6-6-2012). SAFIRE End User symposium on Radicalisation towards Violence., Amsterdam (organising a conference, workshop, ...).
    This list of publications is extracted from the UvA-Current Research Information System. Questions? Ask the library or the Pure staff of your faculty / institute. Log in to Pure to edit your publications. Log in to Personal Page Publication Selection tool to manage the visibility of your publications on this list.
  • Ancillary activities
    • No ancillary activities