1. The psychology of online activism and social movements: Relations between online and offline collective action

   Greijdanus, H., de Matos Fernandes, C. A., Turner-Zwinkels, F., Honari, A., Roos, C. A., Rosenbusch, H. & Postmes, T., Oct-2020, In : Current Opinion in Psychology. 35, p. 49-54 6 p.

   Research output: Contribution to journal › Article › Academic › peer-review

2. Country-level and Individual-level Predictors of Men's Support for Gender Equality in 42 Countries

   Kosakowska-Berezecka, N., Besta, T., Bosson, J. K., Jurek, P., Vandello, J. A., Best, D. L., Wlodarczyk, A., Safdar, S., Zawisza, M., Zadkowska, M., Sobiecki, J., Agyemang, C. B., Akbas, G., Ammirati, S., Anderson, J., Anjum, G., Aruta, J. J. B. R., Ashraf, M., Bakaityte, A., Bi, C., Becker, M., Bender, M., Berxulli, D., Bosak, J., Daalmans, S., Dandy, J., de Lemus, S., Dvorianchikov, N., Etchezahar, E., Froehlich, L., Gavreliuc, A., Gavreliuc, D., Gomez, A., Greijdanus, H., Grigoryan, A., Hale, M-L., Hamer, H., Hoorens, V., Hutchings, P. B., Jensen, D. H., Kelmendi, K., Khachatryan, N., Kinahan, M., Kozlowski, D., Lauri, M. A., Li, J., Maitner, A. T., Makashvili, A., Mancini, T., Martiny, S. E., Dordevic, J. M., Moreno-Bella, E., Moscatelli, S., Moynihan, A. B., Muller, D., Ochoa, D., Adebayo, S. O., Pacilli, M. G., Palacio, J., Patnaik, S., Pavlopoulos, V., Piterova, I., Puzio, A., Pyrkosz-Pacyna, J., Renteria-Perez, E., Rousseaux, T., Sainz, M., Salvati, M., Samekin, A., Garcia-Sanchez, E., Schindler, S., Sherbaji, S., Sobhie, R., Sulejmanovic, D., Sullivan, K. E., Torre, B., Torres, C., Ungaretti, J., Valshtein, T., Van Laar, C., van der Noll, J., Vasiutynskyi, V., Vohra, N., Zapata-Calvente, A. L. & Zukauskiene, R., 27-Aug-2020, In : European Journal of Social Psychology. 6, p. 1276-1291 16 p.

   Research output: Contribution to journal › Article › Academic › peer-review

3. The polarizing effects of group discussion in a negative normative context: Integrating societal‐, group‐, and individual‐level factors

   Koudenburg, N., Greijdanus, H. & Scheepers, D., Jan-2019, In : British Journal of Social Psychology. 58, 1, p. 150-174 25 p.

   Research output: Contribution to journal › Article › Academic › peer-review

4. Sociale media en collectieve actie rondom de gasboringen in Groningen

   Greijdanus, H. & Postmes, T., 23-Nov-2018, Groningen: Rijksuniversiteit Groningen. 206 p.

   Research output: Book/Report › Report › Professional

5. Stereotypen

   Gordijn, E., Wigboldus, D. & Greijdanus, H., Jul-2017, Sociale psychologie. Vonk, R. (ed.). 4 ed. Amsterdam: Boom

   Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic

6. Steeling Ourselves: Intragroup Communication while Anticipating Intergroup Contact Evokes Defensive Intergroup Perceptions

   Greijdanus, H., Postmes, T., Gordijn, E. H. & van Zomeren, M., 22-Jun-2015, In : PLoS ONE. 10, 6, 23 p., e0131049.

   Research output: Contribution to journal › Article › Academic › peer-review

7. Intragroup communication in intergroup conflict: Influences on social perception and cognition

   Greijdanus, H. J. E., 2015, [Groningen]: University of Groningen. 200 p.

   Research output: Thesis › Thesis fully internal (DIV)

8. When abstraction does not increase stereotyping: Preparing for intragroup communication enables abstract construal of stereotype-inconsistent information

   Greijdanus, H., Postmes, T., Gordijn, E. H. & van Zomeren, M., Dec-2014, In : Social Cognition. 32, 6, p. 505-527 23 p.

   Research output: Contribution to journal › Article › Academic › peer-review

9. Escalation and de-escalation of intergroup conflict: The role of communication within and between groups

   Postmes, T., Gordijn, E., van Zomeren, M., Greijdanus, H., de Vos, B., Täuber, S. & Kamans, E., 2014, Social conflicts within and between groups. De Dreu, C. K. W. (ed.). Psychology Press, p. 93-116 23 p. (Current issues in social psychology).

   Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic

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1. Lak aan de coronaregels: er is altijd wel een manier om een feestje te vieren

   Hedy Greijdanus

   29/10/2020

   1 Media contribution

   Press/Media: Expert Comment › Popular

2. A social media 'blackout' enthralled Instagram. But did it do anything?

   Hedy Greijdanus

   13/06/2020

   1 item of Media coverage

   Press/Media: Research › Popular

3. In het hoofd van de dreigbriefschrijver over windmolens

   Hedy Greijdanus

   06/04/2019

   1 Media contribution

   Press/Media: Expert Comment › Popular

4. Sociale media hebben praktijk collectieve actie sterk veranderd

   Hedy Greijdanus & Tom Postmes

   01/03/2019 → 13/03/2019

   4 items of Media coverage

   Press/Media: Research › Professional

5. Interview blogger "Welke kast?"

   Hedy Greijdanus

   06/10/2015

   1 item of Media coverage

   Press/Media: Expert Comment › Popular

6. Verander negatieve stereotypen: Let beter op je taal

   Hedy Greijdanus

   28/07/2015

   1 item of Media coverage

   Press/Media: Expert Comment › Popular

7. Interview OOG TV Radio Glasnost Noorderzon

   Hedy Greijdanus

   28/08/2015

   1 Media contribution

   Press/Media: Research › Popular

8. Radio EenVandaag

   Hedy Greijdanus

   29/06/2015

   1 Media contribution

   Press/Media: Research › Popular

9. MindWise blog: Countering negative stereotypes with positive stereotypes

   Hedy Greijdanus

   24/06/2015

   1 item of Media coverage

   Press/Media: Expert Comment › Popular

10. Press release: Positive stereotyping best remedy for negative stereotyping

    Hedy Greijdanus

    19/06/2015 → 19/06/2015

    3 items of Media coverage

    Press/Media: Other › Popular

View all (10) »

1. Online gedrag en internetconsultatie

   Hedy Greijdanus (Consultant)

   Feb-2020

   Activity: Consultancy › Professional

2. Newsnight: jaaroverzicht - Janine Abbring blikt samen met tafelheer Arjen Lubach terug op 2019

   Hedy Greijdanus (Invited speaker)

   20-Dec-2019

   Activity: Talk or presentation › Popular

3. Sociale media en collectieve actie rondom de gasboringen in Groningen

   Hedy Greijdanus (Invited speaker) & Tom Postmes (Invited speaker)

   28-Nov-2019

   Activity: Talk or presentation › Professional

4. Social media and collective action: The case of gas extraction in Groningen

   Hedy Greijdanus (Keynote speaker)

   30-Apr-2019

   Activity: Talk or presentation › Academic

5. The social animal

   Hedy Greijdanus (Organiser), Carla Anne Roos (Organiser), Tom Postmes (Keynote/plenary speaker), Justin Richardson (Invited speaker), Ellen van der Werff (Invited speaker), Anne Marthe van der Bles (Invited speaker) & Yasin Koc (Invited speaker)

   14-Mar-2019

   Activity: Participating in or organising an event › Organising an event › Popular

6. Sociale media en protest in Grunn: Eindpresentatie voor betrokkenen

   Hedy Greijdanus (Speaker) & Tom Postmes (Speaker)

   28-Feb-2019

   Activity: Talk or presentation › Popular

7. Onbegrensde liefde

   Hedy Greijdanus (Invited speaker)

   14-Feb-2019

   Activity: Talk or presentation › Popular

8. Eindpresentatie Sociale media en collectieve actie rondom de gasboringen in Groningen

   Hedy Greijdanus (Speaker) & Tom Postmes (Speaker)

   23-Nov-2018

   Activity: Talk or presentation › Professional

9. Intergroup conflict: The cognitive, emotional, and behavioral consequences of communication and Intergroup Behaviour

   Hedy Greijdanus (Organiser)

   27-Jun-2013 → 30-Jun-2013

   Activity: Participating in or organising an event › Participation in conference › Academic

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