Dr. Marijn Stok

Assistant Professor

Psychological Assessment and Health Psychology Department of Psychology University of Konstanz P.O. Box 47 D-78457 Konstanz

Phone: +49 (0) 7531 88 5317
Email: marijn.stok [at] uni-konstanz.de

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Curriculum Vitae

Professional experience

since Nov 2016 Assistant Professor
Dept. of Interdisciplinary Social Sciences, Utrecht University, The Netherlands
since May 2014 Research scientist
Dept. of Psychological Assessment & Health Psychology, University of Konstanz, Germany
*Associated fellow at the Zukunftskolleg since May 2015
Nov 2013 - Apr 2014 Postdoctoral researcher and lecturer
Dept. of Clinical & Health Psychology, Utrecht University, The Netherlands
Jan 2009 - Oct 2013 PhD candidate
Dept. of Clinical & Health Psychology, Utrecht University, The Netherlands
*Visiting scholar at IDeA Centre, Goethe University, Frankfurt University (Prof. Dr. Caterina Gawrilow), Feb 2011 - Mar 2011
Sep 2008 - Dec 2008 Junior lecturer
Dept. of Clinical & Health Psychology, Utrecht University, The Netherlands

Education

Jan 2014 PhD in Health Psychology, Utrecht University, The Netherlands
Title: "Eating by the norm: The influence of social norms on young people's eating behavior"
Supervisors: Prof. Denise de Ridder, Prof. John de Wit, Dr. Emely de Vet
Jul 2012 Invited participant in the Summer School of the European Association for Social Psychology
Limerick, Ireland
Jul 2008 Master in Health Psychology (MSc), cum laude
Jun 2006 Bachelor of Arts (BA), summa cum laude

Awards and nominations

2016 Invited to give the Early Career Invited Lecture at the 15th Conference of the International Society of Behavioral Nutrition and Physical Activity, Cape Town, South-Africa,
2016 Nominated (1 out of 3 nominees) for the Early Career Poster Award at the 15th Conference of the International Society of Behavioral Nutrition and Physical Activity in Cape Town, South-Africa
2016 Nominated (1 out of 3 nominees) for the University of Konstanz Award for Teaching Excellence (LUKS) in Psychology
2015 Herman Schaalma PhD Dissertation Award
awarded by the European Health Psychology Society
2015 Poster award (together with Helge Giese and Britta Renner)
29th Annual Conference of the European Health Psychology Society, Limassol, Cyprus
2012 Poster award (together with Kirsten Verkooijen)
26th Annual Conference of the European Health Psychology Society, Prague (Czech Republic)
2008 Utrecht University Thesis Prize
Annual university-wide prize awarded to the best Master's thesis

Funding

Aug 2016 Conference grant
30th conference of the European Health Psychology Society, Aberdeen (United Kingdom)
funded by the German Academic Exchange Service (DAAD)
Jul 2016 Seed money grant (€6500)
funded by the Young Scholar Fund, University of Konstanz
Jun 2016 Conference grant
15th Annual International Society for Behavioral Nutrition and Physical Activity Meeting, Cape Town (South-Africa)
funded by the Young Scholar Fund, University of Konstanz
Feb 2016 Open access publication grant (€ 1800)
funded by the European Commission (EC FP7 Post-Grant Open Access Pilot)
Sep 2015 Conference grant
29th conference of the European Health Psychology Society, Limassol (Cyprus)
funded by the German Academic Exchange Service (DAAD)
May 2015 Mentorship Programme grant (€ 5000)
funded by the Zukunftskolleg, University of Konstanz
May 2015 Conference grant
14th Annual International Society for Behavioral Nutrition and Physical Activity Meeting, Aberdeen (United Kingdom)
funded by the Young Scholar Fund, University of Konstanz
Sep 2014 Symposium organization grant (€ 1500)
Together with Prof. Denise de Ridder and Dr. Emely de Vet
Symposium "Environmental Psychology"
funded by the Dutch Social Psychology Association
Aug 2014 Conference grant
49th Conference of the German Society for Psychology, Bochum (Germany)
funded by the Young Scholar Fund, University of Konstanz
Jun 2014 Personal development grant (€ 9500)
funded by the Ministry of Science, Research and the Arts of Baden-Württemberg (Germany)

Peer-Reviewing Activities

Journals: Regular peer-reviewing for >25 Thomson Reuters-indexed academic journals in the fields of health psychology, social psychology, public health, health promotion, and diet (e.g. Appetite, BMC Public Health, European Journal of Social Psychology, Health Education & Behavior, Health Psychology Review, Journal of the Academy of Nutrition and Dietetics, Journal of Environmental Psychology, Physiology & Behavior, PLOS ONE, Preventive Medicine, Psychology & Health, Social Influence, Social Science & Medicine)
Grants: Health and Medical Research Fund, Government of the Hong Kong Special Administrative Region, Sigma Delta Epsilon Graduate Women in Science Fellowships
Conference: International Congress of Applied Psychology 2014

Membership in Professional Organizations

Current Expert network Determinants of Diet
Current Dutch Social Psychology Association
Current Dutch Association for Researchers in Psychology and Health
Current European Health Psychology Society
Current International Society for Behavioral Nutrition and Physical Activity
2013-2016 European DEDIPAC consortium
2009-2013 European TEMPEST consortium

Positions in Professional Bodies and Networks

Current Member of management project group Honours College of Social Sciences
Utrecht University (The Netherlands)
Current Management and coordination of the European Determinants of diet expert network
Nov 2017 - Feb 2019 Member of the Master Examination Committee of the Faculty of Social Sciences
Utrecht University (The Netherlands)
Feb 2011 - Aug 2012 Board member of the Board of Research of the Faculty of Social Sciences
Utrecht University (The Netherlands)
Nov 2010 - Aug 2012 Board member of the PhD Council of the Faculty of Social Sciences
Utrecht University (The Netherlands)
Jan 2010 - Jan 2011 Board Member of the PhD Council of the Linschoten Institute for Psychological Research
Utrecht University (The Netherlands)
Oct 2009 - Aug 2012 Board Member of the PhD Candidate Network (PrOUt)
Utrecht University (The Netherlands)
Jul 2006 - Dec 2006 Participation Nationale DenkTank 2006 [National Think Tank 2006] on innovations in health care
Publication "Recept voor morgen: Een frisse blik op betere zorg voor chronische zieken"
["Recipe for tomorrow: A fresh view on better care for the chronically ill"]
.
Jan 2006 - Aug 2008 Student board member of the Educational Committee, Faculty of Social Sciences Graduate School
Utrecht University (The Netherlands)

Research

Research interests

  • Behavior change
  • Social influence
  • Reactance
  • The psychology of eating
  • Self-regulation
  • Nudging

Projects

Current projects:

Finished projects:

The DEDIPAC project (a European JPI HDHL project)
Primary aim: "To understand the determinants of dietary, physical activity and sedentary behaviors using a broad multidisciplinary approach, and to translate this knowledge into a more effective promotion of a healthy diet and physical activity"
Mentorship Program 2015 "Social influence and self-determination: A person-environment interactive perspective"
Primary aim: "To investigate when social influence techniques do and do not give rise to feelings of psychological reactance, and the subsequent effects of psychological reactance on health behavior"
Mentor: Prof. Dr. Maarten Vansteenkiste, Ghent University (Belgium)
SozNet 2014-2015
Primary aim: "To longitudinally track the development of a new social network and the health behaviors performed within that network"
The TEMPEST project (funded by the EU 7th Framework Program)
Primary aim: "To investigate the role of self-regulatory competence in learning to deal with food temptations in the obesogenic environment"
Dissertation research (defended January 2014)
Primary aim: "To investigate the role that social norms play in shaping young people's eating behavior, and determine the potential of social norms to promote healthy eating behavior"

Teaching and supervision at University of Konstanz

Seminars

Academic year 2018-2019 Developer and lecturer of seminar "Social Influence"
Regularly since academic year 2015-2016 Developer and lecturer of seminar "Nudging Health"
Regularly since academic year 2015-2016 Developer and lecturer of seminar "The Impact of the Social Environment on Health"

Supervision

2019 Jana Straβheim, master thesis
"The supermarkets next door - A cross-sectional analysis of food retail density and BMI of children and adolescents in Germany"
2017 Katharina Otto, bachelor thesis
"The role of perceived message source competence and message forcefulness on reactance to a health message"
2014-2016 Daily supervisor of PhD candidate Helge Giese, University of Konstanz
2016 Kerstin Halbgebauer, master thesis
"Communicating eating-related rules: The influence of framing and forcefulness on reactance"
2016 Fee Benz, master thesis, University of Konstanz
"Communicating eating-related rules: the influence of framing on reactance and food consumption"
2016 Noreen Weiler, bachelor thesis, University of Konstanz
"Reactance versus Ego-Depletion: Why eating-related rules do not always succeed"
2016 Claudia Eppler, bachelor thesis, University of Konstanz
"Soft prohibitions: Testing two explanations for aftereffects of strict rules on food consumption"
2016 Lisa Kalisch, master thesis, University of Konstanz
"Reactance to Health Messages – a Matter of Forcefulness and Message Source?"
2015 Fee Benz, bachelor thesis, University of Konstanz
"Isst das Auge mit? Der Einfluss visueller Anreize auf den Konsum und die Bewertung von Speisen"
2015 Kerstin Halbgebauer, bachelor thesis, University of Konstanz (second supervisor)
"Isst das Auge mit? Der Einfluss visueller Informationen auf das Ernährungsverhalten"

 

Teaching and supervision at Utrecht University

Since the academic year 2008-2009, I coordinate, lecture and supervise theses in the bachelor, master and research master curricula of Psychology and Interdisciplinary Social Science at Utrecht University.

Publications

2016
Paper

Renner, B., Sproesser, G., Stok, F.M., & Schupp, H. (2016). Eating in the dark: A dissociation between perceived and actual food consumption. Food Quality and Preference. 50, 145–151. doi:10.1016/j.foodqual.2016.02.010

2016
Paper

Stok, F.M., De Ridder, D.T.D., De Vet, E., Nureeva, L., Luszczynska, A., Wardle, J., Gaspar, T., & De Wit, J.B.F. (2016). Hungry for an intervention? Adolescents' ratings of acceptability of eating-related intervention strategies. BMC Public Health, 16: 5. doi: 10.1186/s12889-015-2665-6

2016
Review

Stok, F.M., De Vet, E., De Ridder, D.T.D., & De Wit, J.B.F. (2016). The potential of peer social norms to shape food intake in adolescents and young adults: A systematic review of effects and moderators. Health Psychology Review, 10, 326-340. doi: 10.1080/17437199.2016.1155161

2015
Paper

De Vet, E., Stok, F.M., De Wit, J.B.F., & De Ridder, D.T.D. (2015). The habitual nature of unhealthy snacking: How powerful are habits in adolescence? Appetite, 95, 182-187. doi: 10.1016/j.appet.2015.07.010

2015
Paper

De Wit, J.B.F., Stok, F.M., Smolenski, D.J., De Ridder, D.T.D., De Vet, E., Gaspar, T., Johnson, F., Nureeva, L., & Luszczynska, A. (2015). Food culture in the home environment: Family meal practices and values can support healthy eating and self-regulation in young people in four European countries. Applied Psychology: Health and Wellbeing, 7, 22-40. doi: 10.1111/aphw.12034

2015
Paper

Stok, F. M., König, L. M., Nurmi, J., & Müller, A. N. (2015). Create workshop 2014: Leveraging Mobile Technology and Social Media in Behavioral Research. European Health Psychologist, 16(6), 260-262.

2015
Paper

Stok, F.M., De Vet, E., De Wit, J.B.F., Luszczynska, A., Safron, M., & De Ridder, D.T.D. (2015). The proof is in the eating: Peer social norms are associated with adolescents’ intended and actual eating behavior. Public Health Nutrition, 18(6), 1044-1051. doi: 10.1017/S1368980014001268

2015
Paper

Stok, F.M., De Vet, E., De Wit, J.B.F., Renner, B., & De Ridder, D.T.D. (2015). Communicating eating-related rules: Suggestions are more effective than restrictions. Appetite, 86, 45-53. doi:10.1016/j.appet.2014.09.010

2015
Paper

Stok, F.M., De Vet, E., Wardle, J., Chu, M.T., De Wit, J., & De Ridder, D.T.D. (2015). Navigating the obesogenic environment: How psychological sensitivity to the food environment and self-regulatory competence are associated with adolescent unhealthy snacking. Eating Behaviors, 17, 19-22 doi: 10.1016/j.eatbeh.2014.12.003

2015
Paper

Verkooijen, K., Stok, F.M., & Mollen, S. (2015). The power of regression to the mean: A social norm study revisited. European Journal of Social Psychology, 45, 417-425. doi: 10.1002/ejsp.2111

2014
Paper

De Vet, E.*,Stok, F.M.*, De Ridder, D.T.D.*, Brunso, K., Baban, A., & Gaspar, T. (2014). Assessing self-regulation strategies: Development and validation of the Tempest Self-Regulation Questionnaire for Eating (TESQ-E) in adolescents. International Journal of Behavioral Nutrition and Physical Activity, 11(1), 1-15 . *The first three authors made equal contributions. doi:  10.1186/s12966-014-0106-z

2014
Dissertation

Stok, F.M. (2014). Eating by the norm: The influence of peer social norms on young people’s eating behavior. (Doctoral dissertation). Utrecht University. Retrieved from https://dspace.library.uu.nl/handle/1874/288827

2014
Paper

Stok, F.M., De Ridder, D.T.D., De Vet, E., & De Wit, J.B.F. (2014). Don’t tell me what I should do, but what others do: The influence of descriptive and injunctive peer norms on fruit consumption in adolescents. British Journal of Health Psychology, 19(1), 52-64. doi: 10.1111/bjhp.12030

2014
Paper

Stok, F.M., Verkooijen, K.T., De Vet, E., De Ridder, D.T.D., & De Wit, J.B.F. (2014). How norms work: Self-identification, attitude and self-efficacy mediate the relation between descriptive social norms and vegetable intake. Applied Psychology: Health and Well-Being, 6(2), 230-250. doi: 10.1111/aphw.12026

2013
Paper

De Ridder, D. T. D., De Vet, E., Stok, F.M., Adriaanse, M. A., & De Wit, J. B. F. (2013). Appropriateness standards can help to curb the epidemic of overweight: response to Dewitte and to Herman and Polivy. Health Psychology Review, 7(2), 173-176. doi: 10.1080/17437199.2013.810960

2013
Paper

De Ridder, D. T. D., De Vet, E., Stok, F.M., Adriaanse, M. A., & De Wit, J. B. F. (2013). Obesity, overconsumption and self-regulation failure: The unsung role of eating appropriateness standards. Health Psychology Review, 7(2), 146-165. doi: 10.1080/17437199.2012.706987

2013
Paper

De Vet, E., De Wit, J.B.F., Luszczynska, A., Stok, F.M., Gaspar, T., Pratt, M., Wardle, J., & De Ridder, D.T.D. (2013). Access to excess: how do adolescents deal with unhealthy foods in their environment? European Journal of Public Health, 23(5), 752-756. doi: 10.1093/eurpub/cks185

2013
Paper

Luszczynska, A., De Wit, J.B.F., De Vet, E., Januszewicz, A., Liszewska, N., Johnson, F., … Stok, F.M. (2013). At-home environment, out-of-home environment, snacks and sweetened beverages intake in preadolescence, early and mid-adolescence: the interplay between environment and self-regulation. Journal of Youth and Adolescence, 42(12), 1873-1883. doi: 10.1007/s10964-013-9908-6

2013
Paper

Stok, F.M. (2013). Het TEMPEST-project: Hoe gaan jongeren om met een voedselomgeving vol verleidingen? [The TEMPEST project: How do adolescents deal with a food environment full of temptations?] Voeding Nu, 15, 9-11.

2012
Paper

Danner, U.N., Evers, C., Stok, F.M., Van Elburg, A.A., & De Ridder, D.T.D. (2012). A double burden: Emotional eating and lack of cognitive reappraisal in eating disordered women. European Eating Disorders Review, 20(6), 490-495. doi: 10.1002/erv.2184

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