CV

EMPLOYMENT HISTORY

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

Chair of Developmental Psychology, 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)

M.A., cum laude, developmental psychology, VU University Amsterdam (2002)

PEER REVIEWED 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.

Cook, E.M., Wildschut, T., & Thomaes, S. (in press). Understanding adolescent shame and pride at school: Mindsets and perceptions of academic competence. Educational and Child Psychology.

Sedikides, C., Slabu, L., Lenton, A., & Thomaes, S. (in press). State authenticity. Current Directions in Psychological Science.

Thomaes, S., Brummelman, B., Miller, J. D., & Lilienfeld, S. O. (in press). The dark personality and psychopathology: Towards a brighter future. Journal of Abnormal Psychology.

Thomaes, S., Brummelman, B., & Sedikides, C. (in press). Why most children think well of themselves. Child Development.

Thomaes, S., Sedikides, C., Van den Bos, N., Hutteman, R., & Reijntjes, A. (2017). Happy to be “me?” Authenticity, psychological need satisfaction, and subjective well-being in adolescence. Child Development, 88, 1045-1056.

Brummelman, E., Thomaes, S., & Sedikides, C. (2016). Separating narcissism from self-esteem. Current Directions in Psychological Science, 25, 8-13.

Leijten, P., Thomaes, S., Orobio de Castro, B., Dishion, T., & Matthys, W. (2016). What good is labeling what’s good? A field experimental investigation of parental labeled praise and child compliance. Behavior Research and Therapy, 87, 134-141.

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.

PEER REVIEWED BOOK CHAPTERS

Brummelman, E., Gürel, C., Thomaes, S., & Sedikides, C. (in press). What separates narcissism from self-esteem? A social-cognitive perspective. In T. Hermann, A. Brunell, & J. Foster (Eds.), The Handbook of trait narcissism: Key advances, research methods, and controversies. New York, NY: Springer.

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., & Sedikides, C. (in press). Narcissism: A social-developmental perspective. In V. Zeigler-Hill & T. D. Shackelford (Eds.), Handbook of personality and individual differences. London, England: Sage.

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.

PROFESSIONAL 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.

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)

PRESENTATIONS

Invited conference symposia and presentations

Thomaes, S. (May, 2017). When Narcissus was a boy. Invited presentation, APS Annual Convention. Boston.

Thomaes, S. (September, 2014). What good is the developing self? Invited symposium chair, British Psychological Society Developmental Section Annual Conference. Amsterdam.

Thomaes, S. (September, 2013). Moving from “what?” and “when?” to “why?”: How experimental methods benefits social developmental research. Invited symposium chair, European Conference on Developmental Psychology. Lausanne.

Invited institutional seminars and presentations (selected)

Thomaes, S. (December, 2015). The sunny and shady sides of me. Invited presentation, University of Leuven. Leuven.

Thomaes, S. (October, 2014). When Narcissus was a boy: On the origins and consequences of childhood narcissism. Invited presentation, Goldsmiths University of London. London.

Thomaes, S. (October, 2014). The sunny and shady sides of me. Invited presentation, University of Amsterdam. Amsterdam.

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

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

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

Thomaes, S. (October, 2011). Me, myself, and I. Invited presentation, University of Southampton. Southampton.

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

Thomaes, S. (January, 2009). Mirror mirror on the wall, who is best adjusted of them all? Invited presentation, University of Groningen. Groningen.

Conference presentations (selected)

Thomaes, S. (April, 2017). Developmental origins of the self. Symposium chair, Society for Research on Child Development. Austin.

Thomaes, S. (April, 2017). Why most children think well of themselves. Society for Research on Child Development. Austin.

Thomaes, S. (April, 2017). Happy to be me? Society for Research on Child Development. Austin.

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

Thomaes, S. (March, 2015). Idolized, detested, or a bit of both? International Convention for Psychological Science. Amsterdam, The Netherlands.

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

Thomaes, S. (July, 2014). When Narcissus was a boy. International Society for Behavioral Development. Shanghai.

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

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

Thomaes, S. (April, 2013). Reminding secure relationships: Source of sorrow or solace? Society for Research on Child Development. Seattle.

Thomaes, S. (April, 2013).  I can do it…or can I? Society for Research on Child Development. Seattle.

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

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

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

Thomaes, S. (April, 2011). Reality bites-or does it? Realistic self-views buffer negative mood following social threat. Society for Research on Child Development. Montreal.

Thomaes, S. (April, 2009).  Mirror, mirror on the wall, who is the most aggressive of them all? Symposium chair, Society for Research on Child Development. Denver.

Thomaes, S. (July, 2008). Reducing narcissistic aggression in the real world: What do you value in life? World Meeting of the International Society for Research on Aggression. Budapest.

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

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)

Social and Emotional Development

Developmental Psychopathology

Experimental Research Methods

Multivariate Statistics

Foundations of Test Theory

Scientific Writing

Introduction to Developmental Psychology

Tacit Academic Knowledge

INSTITUTIONAL RESPONSIBILITIES

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

Board member interdisciplinary research school Child and Adolescent Studies, Utrecht University (2016-present)

PROFESSIONAL SERVICE

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