CV

ACADEMIC APPOINTMENT

Associate professor, Department of Psychology, Utrecht University (present)

Associate professor, School of Psychology, University of Southampton (2013-2016)

Assistant professor, Department of Psychology, Utrecht University (2009 - 2013)

Postdoctoral researcher, Department of Psychology, Utrecht University (2006 - 2009)

EDUCATION

Ph.D., cum laude, developmental psychology, VU University Amsterdam (2007)

MA, cum laude, developmental psychology, VU University Amsterdam (2002)

GRANTS AND RECOGNITIONS

Research grant, Do You Hear What I Feel? Strategic Interdisciplinary Research Development Fund, University of Southampton (2015)

“Special Virtue” acknowledgement for Thomaes, Stegge, & Olthof (2007), British Journal of Developmental Psychology (2014)

Research grant, Fragile Self-Views in Children with Conduct Problems, Netherlands Organization for Scientific Research, with Bram Orobio de Castro & Eddie Brummelman  (2014)

Research grant, To Thine Own Self Be True-And Be Happy? Testing the Need Fulfilment Model of Authenticity, Annual Adventures in Research, University of Southampton (2013)

Research grant, Commanding respect: How parents and peers contribute to the development of narcissistic aggression, Netherlands Organization for Scientific Research, with Bram Orobio de Castro (2010)

Science ‘Editor’s Choice’, for Reducing narcissistic aggression by buttressing self-esteem: An experimental field study. Psychological Science, 20, 1536-1542 (2009)

Best Teacher award, Psychology Department, Utrecht University (2009)

Best International Article award, Institute for the Study of Development and Education (2008)

Ph.D. cum laude, VU University Amsterdam (2007)

Fulbright scholarship (2005)

Ter Meulen Fund research grant, Royal Dutch Academy of Sciences (2004)

JOURNAL ARTICLES

Brummelman, E., Nelemans, S. A., Thomaes, S., & Orobio de Castro, B. (in press). When parents’ praise inflates, children’s self-esteem deflates. Child Development.

Brummelman, E., Thomaes, S., & Sedikides, C. (in press). Separating narcissism from self-esteem. Current Directions in Psychological Science.

Leijten, P., Thomaes, S., Orobio de Castro, B., Dishion, T., & Matthys, W. (in press). What good is labeling what’s good? A field experimental investigation of parental labeled praise and child compliance. Behavior Research and Therapy.

Thomaes, S., Sedikides, C., Van den Bos, N., Hutteman, R., & Reijntjes, A. (in press). Happy to be “me?” Authenticity, psychological need satisfaction, and subjective well-being in adolescence. Child Development.

Reijntjes, A., Vermande, M. M., Thomaes, S., Olthof, T., Goossens, F. A., Aleva, L., & Van der Meulen, M. (2016). Narcissism, bullying, and social dominance in youth: A longitudinal examination. Journal of Abnormal Child Psychology, 44, 63-74.

Thomaes, S., & Sedikides, C. (2016). Thin images reflected in the water: Narcissism and girls’ vulnerability to the thin-ideal. Journal of Personality, 84, 633-645.

Brummelman, E., Thomaes, S., Nelemans, S. A., Orobio de Castro, B., Overbeek, G., & Bushman, B. J. (2015). Reply to Kealy et al.: Theoretical precision in the study of narcissism and its origins. Proceedings of the National Academy of Sciences of the United States of America, 112, E2987

Brummelman, E., Thomaes, S., Nelemans, S. A., Orobio de Castro, B., Overbeek, G., & Bushman, B. J. (2015). Origins of narcissism in children. Proceedings of the National Academy of Sciences of the United States of America, 112, 3659–3662.

Leijten, P., Dishion, T. J., Thomaes, S., Raaijmakers, M. A. J., Orobio de Castro, B., & Matthys, W. (2015). Bringing parenting interventions back to the future: How randomized controlled microtrials may benefit parenting intervention efficacy. Clinical Psychology: Science and Practice, 22, 47-57.

Orobio de Castro, B., Thomaes, S. & Reijntjes, A. (2015). Using experimental designs to understand the development of peer relations. Journal of Research on Adolescence, 25, 1-13.

Thomaes, S., Sedikides, C., Reijntjes, A., Brummelman, E., & Bushman, B. J. (2015). Emotional contrast or compensation? How support reminders influence the pain of acute peer disapproval in preadolescents. Developmental Psychology, 51, 1438-1449.

Brummelman, E., Thomaes, S., Nelemans, S. A., Orobio de Castro, B., & Bushman, B. J. (2014). My child is God’s gift to humanity: Development and validation of the Parental Overvaluation Scale (POS). Journal of Personality and Social Psychology, 108, 665-679.

Brummelman, E., Thomaes, S., Orobio de Castro, B., Overbeek, G., & Bushman, B. J. (2014). “That’s not just beautiful—that’s incredibly beautiful!” The adverse impact of inflated praise on children with low self-esteem. Psychological Science, 25, 728-735.

Brummelman, E., Thomaes, S., Overbeek, G., Orobio de Castro, B., Van den Hout, M., & Bushman, B. J. (2014). On feeding those hungry for praise: Person praise backfires in children with low self-esteem. Journal of Experimental Psychology: General, 143, 9-14.

Brummelman, E., Thomaes, S., Walton, G. M., Poorthuis, A. M. G., Overbeek, G., Orobio de Castro, B., & Bushman, B. J. (2014). Unconditional regard buffers children’s negative self-feelings. Pediatrics, 134, 1119–1126.

Poorthuis, A. M., Juvonen, J., Thomaes, S., Denissen, J. J., Orobio de Castro, B., & van Aken, M. A. (2014). Do Grades Shape Students’ School Engagement? The Psychological Consequences of Report Card Grades at the Beginning of Secondary School. Journal of Educational Psychology, 107, 842-854.

Poorthuis, A., Thomaes, S., Denissen, J., Orobio de Castro, B., & Van Aken, M. (2014). Dashed hopes, dashed selves? A sociometer perspective on self-esteem change across the transition to secondary school. Social Development, 23, 770-783.

Brummelman, E., Thomaes, S., Slagt, M. Overbeek, G., Orobio de Castro, B., & Bushman, B. J. (2013). My Child Redeems My Broken Dreams: On Parents Transferring Their Unfulfilled Ambitions onto Their Child. PLoS ONE, 8, e65360.

Poorthuis, A., Thomaes, S., Denissen, J.J.A., van Aken, M., & Orobio de Castro, B. (2013). Personality in Action: Can Brief Behavioral Personality Tests Predict Children’s Academic and Social Adjustment Across the Transition to Secondary School? European Journal of Personality Assessment, 30, 169-177.

Thomaes, S., Brummelman, E., Bushman, B.J., & Reijntjes, A. (2013). When Narcissus was a boy: Origins, nature, and consequences of childhood narcissism. Child Development Perspectives, 7, 22-26.

Reijntjes, A., Kamphuis, J. H., Thomaes, S., Bushman, B.J., & Telch, M.J. (2013). Too calloused to care: An experimental examination of factors influencing youths’ displaced aggression against their peers. Journal of Experimental Psychology: General, 142, 28-33.

Reijntjes, A., Thomaes, S., Kamphuis, J. H., Bushman, B. J., Reitz, E., & Telch, M. J. (2013). Youths’ displaced aggression against In- and out-group peers: An experimental examination. Journal of Experimental Child Psychology, 115, 180-187.

Poorthuis, A., Thomaes, S., Denissen, J.J.A., van Aken, M., & Orobio de Castro, B. (2012). Prosocial tendencies predict friendship quality, but not for popular children. Journal of Experimental Child Psychology, 112, 378-388.

Thomaes, S., Bushman, B. J., Orobio de Castro, B., & Reijntjes, A. (2012). Arousing “gentle passions” in young adolescents: Sustained experimental effects of value-affirmations on prosocial feelings and behaviors. Developmental Psychology, 48, 103-110.

Orue, I., Bushman, B. J., Calvete, E., Thomaes, S., Orobio de Castro, B, & Hutteman, R. (2011). Monkey see, monkey do, monkey hurt: Longitudinal effects of exposure to violence on children’s aggressive behavior. Social Psychological and Personality Science, 2, 432-437.

Reijntjes, A., Thomaes, S., Kamphuis, H., Bushman, B. J., Orobio de Castro, B., & Telch, M. J. (2011). Explaining the paradoxical rejection-aggression link: The mediating effects of hostile intent attributions, anger, and decreases in state self-esteem on acute peer rejection-induced aggression in youth. Personality and Social Psychology Bulletin, 37, 955-963.

Thomaes, S., Stegge, H., Olthof, T., Bushman, B. J., & Nezlek, J. B. (2011). Turning shame inside-out: “Humiliated fury” in young adolescents. Emotion, 11, 786-793.

Reijntjes, A., Thomaes, S., Kamphuis, H., Orobio de Castro, B., & Telch, M. J. (2010). Self-verification strivings in children holding negative self-views: The mitigating effects of a preceding success experience. Cognitive Therapy and Research, 34, 563-570.

Reijntjes, A., Thomaes, S., Bushman, B. J., Boelen, P. A., Orobio de Castro, B., & Telch, M. J. (2010). The outcast lash-out effect in youth: Alienation increases aggression following peer rejection. Psychological Science, 21, 1394-1398.

Reijntjes, A., Thomaes, S., Orobio de Castro, B., & Telch, M. J. (2010). Delighted when approved by others, to pieces when rejected: Children’s social anxiety magnifies the linkage between self- and other-evaluations. Journal of Child Psychology and Psychiatry, 52, 774-781.

Thomaes, S., Reijntjes, A., Orobio de Castro, B., Bushman, B. J., Poorthuis, A., & Telch, M. J. (2010). I like me if you like me: On the interpersonal modulation and regulation of preadolescents’ state self-esteem. Child Development, 81, 811-825.

Thomaes, S., Bushman, B. J., Orobio de Castro, B., & Stegge, H. (2009). What makes narcissists bloom? A framework for research on the etiology and development of narcissism. Development and Psychopathology, 21, 1233-1247.

Thomaes, S., Bushman, B. J., Orobio de Castro, B., Cohen, G., & Denissen, J. J. A. (2009). Reducing narcissistic aggression by buttressing self-esteem: An experimental field study. Psychological Science, 20, 1536-1542. “Science Editors’ Choice”, Science, 326 (5957).

Thomaes, S., Reijntjes, A., Orobio de Castro, B., & Bushman, B. J. (2009). Reality Bites-Or Does It? Realistic self-views buffer negative mood following social threat. Psychological Science, 20, 1079-1080.

Bushman, B. J., Baumeister, R., Thomaes, S., Ryu, E., Begeer, S., & West, S. (2009). Looking again, and harder, for a link between low self-esteem and aggression. Journal of Personality, 77, 427-446.

Polman, H., Orobio de Castro, B., Thomaes, S., & Van Aken, M. A. G. (2009). New directions in measuring reactive and proactive aggression: Validation of a teacher questionnaire. Journal of Abnormal Child Psychology, 37, 183-193.

Van Baardewijk, Y., Stegge, H., Andershed, H., Thomaes, S., Scholte, E., & Vermeiren, R. (2008). Can psychopathic traits in children be measured through self-report? Initial test of the Youth Psychopathic traits Inventory: Child Version. International Journal of Law and Psychiatry, 31, 199-209.

Thomaes, S., Bushman, B. J., Stegge, H., & Olthof, T. (2008). Trumping shame by blasts of noise: Narcissism, self-esteem, shame, and aggression in young adolescents. Child Development, 79, 1792-1801.

Thomaes, S., Stegge, H., Bushman, B. J., Olthof, T., & Denissen, J. (2008). Development and validation of the Childhood Narcissism Scale. Journal of Personality Assessment, 90, 382-391.

Thomaes, S., Stegge, H., & Olthof, T. (2007). Externalizing shame responses in children: The role of fragile positive self-esteem. British Journal of Developmental Psychology, 25, 559-577. BPS Development Section Annual Conference Special Virtue Issue, September 2014.

BOOK CHAPTERS

Thomaes, S., Brummelman, E., & Sedikides, C. (in press). Narcissism: A Social Developmental Perspective. Sage Handbook of Personality and Individual Differences.

Denissen, J. J. A., Thomaes, S., & Bushman, B. J. (in press). Self-Regulation and aggression: Aggression-provoking cues, individual differences, and self-control strategies. In D. de Ridder, M. Adriaanse, and K. Fujita, Handbook of self-control in health and well-being. London: Routledge.

Thomaes, S., & Brummelman, E. (2016). Narcissism. In Cicchetti, D. (Ed.), Developmental Psychopathology. Wiley.

Thomaes, S., & Bushman, B. J. (2012). Treating Narcissus: A basic research perspective. In W. K. Campbell & J. D. Miller (Eds.), Handbook of Narcissism and Narcissistic Personality Disorder. New York: Wiley.

Bushman, B. J. & Thomaes, S. (2012). When the narcissistic ego deflates, narcissistic aggression inflates. In W. K. Campbell & J. D. Miller (Eds.), Handbook of Narcissism and Narcissistic Personality Disorder. New York: Wiley.

Thomaes, S., Poorthuis, A., & Nelemans, S. (2011). Self-esteem. In Brown, B. B., & Prinstein, M. (Eds.), Encyclopedia of Adolescence (Vol 1, 316-324). Elsevier.

Thomaes, S., & Bushman, B. J. (2010). Mirror mirror on the wall, who’s the most aggressive of them all? In M. Mikulincer and P. Shaver (Eds.), Aggression, Violence, and their Consequences. Washington DC: American Psychological Association.

Bushman, B. J., & Thomaes, S. (2009). Aggression. In K. Scherer & D. Sander (Eds.), Oxford Companion to Emotion and the Affective Sciences. Oxford University Press.

Thomaes, S., Stegge, H., & Olthof, T. (2009). Does shame bring out the worst in narcissists? On moral emotions and immoral behaviors. In W. Koops (Ed.), The Development and Structure of Conscience. Psychology Press.

Bushman, B. J. & Thomaes, S. (2008). Aggression. In R. F. Baumeister & K. D. Vohs (Eds.), Encyclopedia of Social Psychology (Vol. 1, pp. 20-25). Thousand Oaks, CA: Sage.

DUTCH PUBLICATIONS

Thomaes, S. (2013). Hoe negatief is het zelfbeeld van onze kinderen eigenlijk? Kind en Adolescent.

Tomassen, T., Reijntjes, A., Thomaes, S., Orobio de Castro, B., & Schuiringa, H. (2012). Paradoxale agressieve reacties op afwijzing door leeftijdgenoten: De verklarende rol van het toekennen van bijandige intenties. De Psycholoog.

Brummelman, E., & Thomaes, S. (2010). Opvoeding en de ontwikkeling van grandioos en kwetsbaar narcisme. Kind & Adolescent.

Guldner, M., Stegge, H., Smits, M., & Thomaes, S. (2010). De kwetsbaarheid van de narcistische zelfwaardering bij kinderen. Kind & Adolescent.

Brummelman, E., & Thomaes, S. (2009). Grandioos en kwetsbaar narcisme: Een exploratie van Diagnostiek en Interventie. Psychopraxis.

Thomaes, S. & Stegge, H. (2007). Hoe narcisten tot bloei komen: Over gezonde en ongezonde zelfgevoelens bij kinderen en adolescenten. Kinder & Jeugdpsychotherapie, 34, 24-37.

Stegge, H., & Thomaes, S. (2007). Korte lontjes en opgeblazen ego’s: Over schaamte, zelfbeeld, en agressie. Kinder & Jeugdpsychtherapie, 34, 5-23.

Thomaes, S. & Stegge, H. (2007). Korte lontjes en opgeblazen ego’s. Pedagogiek & Praktijk, 35, 44.

DISSERTATION

Thomaes, S. (2007). Narcissism, shame, and aggression in early adolescence. On vulnerable children. Unpublished doctoral dissertation.

CONFERENCE PRESENTATIONS, INVITED COLLOQUIA

Thomaes, S. (March, 2016). Narcissism: A social-developmental perspective. University of Leuven.

Thomaes, S. (March, 2015). Symposium Chair, Me, myself, and you: The social life of a narcissist. International Convention for Psychological Science. Amsterdam, the Netherlands.

Thomaes, S. (March, 2015). Idolized, detested, or a bit of both? Paper to be presented at the International Convention for Psychological Science. Amsterdam, the Netherlands.

Thomaes, S. (October 2014). When Narcissus was a Boy. Goldsmiths Univerity of London.

Thomaes, S. (September 2014). Invited Symposium Chair, What Good is the Developing Self? BPS Developmental Section Annual Conference. Amsterdam, the Netherlands.

Thomaes, S. (September 2014). To thine own self be true–and be happy? Paper presented at the BPS Developmental Section Annual Conference. Amsterdam, the Netherlands.

Thomaes, S. (July 2014). When Narcissus was a boy. Paper presented at the International Society for Behavioral Development. Shanghai, China.

Thomaes, S. (September 2013). Invited Symposium Chair, Moving From “What?” and “When?” to “Why?”: How Experimental Methods Benefit Social Developmental Research. European Conference on Developmental Psychology. Lausanne, Switzerland.

Thomaes, S. (September 2013). I can do it…or can I? Paper presented at the European Conference on Developmental Psychology. Lausanne, Switzerland.

Thomaes, S. (April, 2013). Symposium Chair, Rejection hurts–but some times more than other times. Understanding the impact of peer rejection and its moderators. Biennial meeting of the Society for Research on Child Development. Seattle, US.

Thomaes, S. (April, 2013). Reminding secure relationships: Source of sorrow or solace? Paper presented at the biennial meeting of the Society for Research on Child Development. Seattle, US.

Thomaes, S. (April, 2013).  I can do it…or can I? Paper presented at the biennial meeting of the Society for Research on Child Development. Seattle, US.

Thomaes, S. (January, 2013). Wiping the fog from the mirror: Clearing up misconceptions on low self-esteem. Ghent University, Ghent, Belgium

Thomaes, S. (December, 2012). When Narcissus was a boy: On the origins and consequences of childhood narcissism. Royal Holloway University, London, UK

Thomaes, S. (November, 2012). Narcissism and its developmental roots. University of Kent, Canterbury, UK

Thomaes, S. (July, 2012). The psychological impact of peer rejection: an experimental approach. Paper presented at the biennial meeting of the International Society for the Study of Behavioral Development. Edmonton, Canada

Thomaes, S. (October, 2011). When Narcissus Was a Boy. Invited presentation at the University of Southampton, UK

Thomaes, S. (June, 2011). Finding “the self” in experimental research with children. Invited colloquium, Behavioral Science Institute, Radboud University. Nijmegen, the Netherlands.

Thomaes, S. (April, 2011).  Symposium Chair, Using social psychology to improve children’s lives: How small interventions can have large effects. Biennial meeting of the Society for Research on Child Development. Montreal, Canada.

Thomaes, S. (April, 2011).  Creating an upward spiral of compassion. Long-term effects of value-affirmations on prosocial feelings and behaviors. Paper presented at the biennial meeting of the Society for Research on Child Development. Montreal, Canada.

Thomaes, S. (April, 2011).  Reality bites-or does it? Realistic self-views buffer negative mood following social threat. Paper presented at the biennial meeting of the Society for Research on Child Development. Montreal, Canada.

Thomaes, S. (April, 2009).  Symposium Chair, Mirror, mirror on the wall, who is the most aggressive of them all? Biennial meeting of the Society For Research on Child Development. Denver, USA.

Thomaes, S. (January, 2009). Mirror mirror on the wall, who is best adjusted of them all? Heymans Colloquium. Groningen, the Netherlands.

Thomaes, S. (July, 2008). Reducing narcissistic aggression in the real world: What do you value in life? Paper presented in the symposium “A developmental perspective on the link between self-views and aggression” (S. Thomaes, Chair) at the 18th world meeting of the International Society for Research on Aggression. Budapest, Hungary.

Thomaes, S. (October, 2007). Childhood narcissism and humiliated fury: On vulnerable children. Paper presented at the 4th International Conference on the (Non)Expression of Emotions in Health and Disease. Tilburg, the Netherlands.

Thomaes, S., & Orobio de Castro, B. (June, 2007). Being the bully boy or the bullied boy? Paper presented at the Education Research Meeting. Groningen, The Netherlands.

Thomaes, S. (April, 2007). Narcissism, shame, and aggression in early adolescence: On vulnerable children. Paper presented at the 35th Conference of the Dutch Psychiatry Association. Maatricht, the Netherlands.

Thomaes, S. (February, 2007). On healthy and unhealthy self-feelings in children and adolescents. Paper presented in the symposium “Hot-Headed and inflated: On emotion-regulation and aggression in children and adolescents” (S. Thomaes, Organizer). Amsterdam, the Netherlands.

Thomaes, S. (August, 2005). Humiliated fury in early adolescence. Paper presented at the 12th European Conference on Developmental Psychology. La Laguna, Spain.

Thomaes, S. (August, 2005). “Shame feels angry”. Poster presented at the 12th European Conference on Developmental Psychology. La Laguna, Spain.

Thomaes, S., Stegge, H., & Olthof, T. (October, 2003). Aggressive shame regulation: The role of fragile positive self-esteem. Paper presented at the 3rd International Conference on the (Non)Expression of Emotions in Health and Disease. Tilburg, the Netherlands.

TEACHING

Supervision Ph.D and doctorate students (David Blom, Eddie Brummelman, Ellen Cook, Anouk van Dijk, Jo Goodman, Alicia Halton-Nathan, Wieteke Hiemstra, Izaskun Orue - visiting PhD student, Astrid Poorthuis, Rogier Verhoef, Michael Wenzler)

Professional Academic Development for PhD Students

Social and Emotional Development

Developmental Psychopathology

Experimental Research Methods

Multivariate Statistics

Foundations of Test Theory

Scientific Writing

Introduction to Developmental Psychology

PROFESSIONAL SERVICE

Chair developmental psychology program, Utrecht University (2016-present)

Editorial Board: Assessment (2009-present)

Ad Hoc reviewer: Psychological Science, Child Development, Journal of Personality and Social Psychology, Developmental Psychology, Development and Psychopathology, Journal of Child Psychology and Psychiatry, National Science Foundation, Developmental Science, Personality and Social Psychology Bulletin, Aggressive Behavior, Journal of Applied Social Psychology, International Journal of Behavioral Development, European Journal of Social Psychology, InMind Magazine, Basic and Applied Social Psychology, Journal of Psychopathology and Behavioral Assessment, European Journal of Personality, European Psychologist, Sex Roles, Journal of Early Adolescence, Cognition and Emotion, Journal of Adolescence, Journal of Abnormal Child Psychology, Journal of Personality, Emotion, Society for Research on Child Development, ZonMw, Sage