My research focuses on children's emotional development. In particular, I am interested in the ways in which the family system contributes to children's development of (mal)adaptive emotion skills and the role of these emotion skills in child psychopathology. I seek to translate this knowledge to the clinical care context as a means of gaining insight into how treatment approaches might be adapted to maximize therapeutic outcomes for youth.
Postdoctoral Research Fellowship – Harvard University
Ph.D. – Clinical Psychology – University of Georgia
Predoctoral Psychology Internship – Child & Adolescent Track – New York University-Bellevue Hospital Center
Peer-reviewed Publications (asterisk indicates student author)
Reaume, C.*, Seddon, J.*, Sack, L.*, Rosario, S.*, & Thomassin, K. (2022). Differences in Positive Emotion Socialization by Ethnicity: Links to Child Emotion Regulation. Journal of Applied Developmental Psychology. Online eprint.
Thomassin, K., Sosa-Hernandez, L.*, & Reaume, C.* (accepted). Parents are Stakeholders too: The Effectiveness of Knowledge Mobilization in Parenting Research. Canadian Journal of Behavioural Science.
Moline, R. L.*, Thomassin, K., & Hou, S.* (accepted). A Modular Approach to Treating Pica in a Young Female with a Trauma History. Clinical Practice in Pediatric Psychology.
Harmon, S.L., Price, M., Corteselli, K., Lee, E., Metz, K., Bonadio, F.T., Marchette, L.K., Hersh, J., Marchette, L.K., Rodriquez, G., Raftery-Helmer, J., Thomassin, K., Bearman, S.K., Jensen-Doss, A., Evans, S., & Weisz, J.R. (2021). Evaluating a Modular Approach to Therapy for Children with Anxiety, Depression, Trauma and Conduct Problems (MATCH) in School-based Mental Health Care: Study Protocol for a Randomized Controlled Trial. Frontiers in Psychology: Psychopathology, 12, 639493. [open access]
Seddon, J. A.*, Abdel-Baki, R.*, Feige, S.*, & Thomassin, K. (2020). The cascade effect of maternal and paternal dysregulation and psychopathology: An emotion socialization transmission framework. Frontiers in Psychology, 11, 579519. [open access]
Weisz, J.R., Thomassin, K., Hersh, J., Santucci, L.C., MacPherson, H.A., Rodriguez, G.M., Bearman, S.K., Lang, J.M., Venderploeg, J.J., Marshall, T.M., Lu, J.J., Jensen-Doss, A., & Evans, S.C. (2020). Clinician training, then what? Randomized clinical trial of Child STEPs psychotherapy using lower-cost implementation supports with versus without expert consultation. Journal of Consulting and Clinical Psychology, 88, 1065-1078.
Moline, R. L.*, Hou, S.*, Chevrier, J.*, & Thomassin, K. (2020). A Systematic Review of Behavioral Treatments for Pica in Youths. Clinical Psychology and Psychotherapy, 28, 39-55.
Sosa-Hernandez, L.*, Sack, L.*, Seddon, J. A.*, Bailey, K.*, & Thomassin, K. (2020). Mother and Father Repertoires of Emotion Socialization Practices in Middle Childhood. Journal of Applied Developmental Psychology, 69, 101159. Online eprint.
Seddon, J. A.*, Rodriguez, V.*, Provencher, Y.*, Raftery-Helmer, J., Hersh, J., Labelle, P., & Thomassin, K. (2020). Meta-analysis of the Effectiveness of the Trier Social Stress Test in Eliciting Physiological Stress Responses in Children and Adolescents. Psychoneuroendocrinology, 116, 104582. Online eprint
Thomassin, K., Seddon, J.*, & Vaughn-Coaxum, R. (2020). Development and validation of the parents’ gendered emotion beliefs scale. Journal of Child and Family Studies, 23, 855-866.
Thomassin, K., Marchette, L., & Weisz, J. R. (2019). Practitioners’ Use and Evaluation of Transdiagnostic Youth Psychotherapy Years after Training and Consultation have Ended. Administration and Policy in Mental Health and Mental Health Services Research, 46, 821-832.
Thomassin, K., Buscea, O.*, Chan, K.J.*, Carter, E.* (2019). A Thematic Analysis of Parents’ Gendered Beliefs about Emotion in Middle Childhood Boys and Girls. Journal of Family Issues, 40, 2944-2973.
Thomassin, K., & Seddon, J.* (2019). Implicit Attitudes about Gender and Emotion are Associated with Mothers’ but not Fathers’ Emotion Socialization. Canadian Journal of Behavioural Science, 51, 254-260.
Thomassin, K., Wilson, L.F., Vaughn-Coaxum, R., Campbell, W.K., Zeichner, A. & Miller, J.D. (2019). Development and validation of the Praise, Indulgence, and Status Parenting Scale. Journal of Personality Assessment, 102, 804-816.
Valiquette-Tessier, S.*, Gosselin, J., Young, M., & Thomassin, K. (2019). Putting parenthood under the cultural lens: A literature review of cultural stereotypes associated with motherhood and fatherhood. Marriage & Family Review, 55, 299-329.
Weisz, J. R., Vaughn-Coaxum, R., Evans, S., Thomassin, K., Hersh, J., Lee, E., Ng, M. Y., Lau, N., Raftery-Helmer, J., Mair, P. (2019). Efficient Monitoring of Treatment Response during Youth Psychotherapy: The Behavior and Feelings Survey. Journal of Clinical Child and Adolescent Psychology, 49, 737-751.
Thomassin, K., Raftery-Helmer, J., & Hersh, J. (2018). A review of coding approaches for the Trier Social Stress Test for youth. Frontiers in Psychology: Quantitative Psychology and Measurement, 9, article 2610. [open access]
Weisz, J.R., Ugueto, A., Bearman, S.K., Marchette, L., Lee, R., Cheron, D. M., Thomassin, K., Hersh, J., Raftery-Helmer, J., Weissman, A., Jensen-Doss, A. (2018). When the Torch is Passed Does the Flame Still Burn? Testing a “Train the Supervisor” Model for the Child STEPs Treatment Program, Journal of Consulting and Clinical Psychology, 86, 726-737.
Madden, A.*, Are, F.*, Rea, H.*, Shaffer, A., & Thomassin, K. (2018). Negative peer relations moderate the association between childhood emotional abuse and nonsuicidal self-injury in an inpatient adolescent sample. Journal of Child and Family Studies, 27, 3994-4000.
Suveg, C., Jones, A.*, Davis, M.*, Jacob, M., Morelen, D., Thomassin, K., & Whitehead, M.* (2018). Emotion-focused cognitive-behavioral therapy for youth with anxiety disorders: A randomized controlled trial. Journal of Abnormal Child Psychology, 46, 569-580.
Thomassin, K., Guerin Marion, C.*, Venasse, M.*, & Shaffer, A. (2017). Specific coping strategies moderate the link between emotion expression deficits and nonsuicidal self-injury in an inpatient sample of adolescents. Child and Adolescent Psychiatry and Mental Health, 11, 1-8. [open access]
Thomassin, K., Quint, E.*, Sezlik, S.*, & Shaffer, A. (2017). Profiles of Emotion Deficits and Adolescent Nonsuicidal Self-injury in an Inpatient Sample. Journal of Research on Adolescence, 27, 752-764.
Davis, M.*, Thomassin, K., Bilms, J.*, Suveg, C., Shaffer, A., & Beach, S.A. (2017). Preschoolers’ genetic, physiological, and behavioral susceptibility factors moderate links between parenting stress and internalizing, externalizing, and sleep problems. Developmental Psychobiology, 59, 473-485.
Thomassin, K., Suveg, C., Davis, M.*, Lavner, J.A., & Beach, S.R.H. (2017). The Coparenting System, Children’s Emotion Dysregulation, and the Intergenerational Transmission of Depressive Symptoms. Family Process, 56, 126-140.
Thomassin, K., Jones, A.*, & Suveg, C. (2017). “You Want Me to Do What?!” Ethical Considerations When Conducting Exposure Tasks with Youth with Anxiety Disorders. Evidence-Based Practice in Child and Adolescent Mental Health, 1, 30-42.
Thomassin, K., Shaffer, A., Madden, A.*, & Londino, D. (2016). Specificity of Childhood Maltreatment and Emotion Deficit in Nonsuicidal Self-Injury in an Inpatient Sample of Youth. Psychiatry Research, 244, 103-108.
Santucci, L., Thomassin, K., Petrovic, L.*, & Weisz, J.R. (2015). Building Evidence-Based Interventions for the Youths, Providers, and Contexts of Real-World Care. Child Development Perspectives, 9, 67-73.
Weisz, J.R., Krumholz, L.S., Santucci, L., Thomassin, K., & Ng, M.* (2015). Shrinking the Gap between Research and Practice: Tailoring and Testing Youth Psychotherapies in Clinical Care Contexts. Annual Review of Clinical Psychology, 11, 139-163.
Thomassin, K., & Suveg, C. (2014). Reciprocal positive affect and well-regulated, adjusted children: A unique contribution of fathers. Parenting: Science and Practice, 14, 28-46.
Morelen, D. & Thomassin, K. (2013). Emotion socialization and ethnicity: An examination of practices and outcomes in African American, Asian American, and Latin American families. Yale Journal of Biology and Medicine, 86, 168-178.
Harding, H. G., Morelen, D., Thomassin, K., Bradbury, L., & Shaffer, A. (2013). Exposure to maternal and paternal perpetrated intimate partner violence (IPV), emotion regulation, and child outcomes. Journal of Family Violence, 28, 63-72.
Morelen, D., Jacob, M. L., Suveg, C., Jones, A., & Thomassin, K. (2013). Family expressivity, emotion regulation, and the link to psychopathology: Examination across race. British Journal of Psychology, 104, 149-166.
Thomassin, K., Morelen, D., & Suveg, C. (2012). Emotion reporting using electronic diaries reduces anxiety symptoms in girls with emotion dysregulation. Journal of Contemporary Psychotherapy, 42, 207-213.
Shaffer, A., Suveg, C., Thomassin, K., & Bradbury, L. (2012). Maternal emotion socialization in the context of family risks: Links to child emotion dysregulation. Journal of Child and Family Studies, 21, 917-924.
Thomassin, K., & Suveg, C. (2012). Parental autonomy support moderates the link between ADHD symptomatology and task perseverance. Child Psychiatry and Human Development, 43, 958-967.
Suveg, C., Shaffer, A., Morelen, D., & Thomassin, K. (2011). Links between maternal and child psychopathology symptoms: Mediation through child emotion regulation and moderation through maternal behavior. Child Psychiatry and Human Development, 42, 507-520.
Lindstrom, W., Coleman, C., Thomassin, K., Southall, C., & Lindstrom, J. (2010). Simulated dyslexia in postsecondary students: Description and detection using embedded validity indicators. Clinical Neuropsychologist, 25, 302-322.
Suveg, C., Morelen, D., Brewer, G. A., & Thomassin, K. (2010). The emotion dysregulation model of anxiety: A preliminary path analytic examination. Journal of Anxiety Disorders, 24, 924-930.
Suveg, C., Payne, M., Thomassin, K., & Jacob, M. L. (2010). Electronic diaries: A feasible method for capturing emotional experiences in youth. Journal of Psychopathology and Behavioral Assessment, 32, 57-67.
Gilleland, J., Suveg, C., Jacob, M., & Thomassin, K. (2009). Parental somatization and child emotional functioning as predictors of youth’s somatic functioning. Child: Care, Health & Development, 35, 383-390.
Suveg, C., Hoffman, B., Zeman, J. L., & Thomassin, K. (2009). Common and specific emotion-related predictors of anxious and depressive symptoms in youth. Child Psychiatry and Human Development, 40, 223-239.
Suveg, C., Jacob, M.L., & Thomassin, K. (2009). Generalized anxiety disorder in youth. In E.A. Storch and L.J. Garcia-Lopez (Eds.), Behavioral Psychology/Psicologia Conductual, 17, 41-66. [Special Issue on Advances in Evidence-based Assessment and Treatment of Anxiety]
Thomassin, K., Jacob, M. L., West, K. B.*, Hale, M. E.*, & Suveg, C. (in press). Emotion Regulation in Youth with Anxiety Disorders. In D. McKay and E.A. Storch (Eds.), Handbook of Child and Adolescent Anxiety Disorders (pp. 171-185). New York, NY: Springer.
Thomassin, K. & Hunsley, J. (2019). Case Conceptualization. In M. Prinstein, E. Youngstrom, E. Mash, & R. Barkley (Eds.) Treatment of Childhood Disorders, 4th Edition. New York, NY: Guilford Press.
Marchette, L.K., Thomassin, K., Hersh, J., MacPherson, H.A., Santucci, L., Weisz, J.R. (in press). Community Mental Health Settings. In T.H. Ollendick, S.W. White, & B.A. White (Eds.) The Oxford Handbook of Clinical Child and Adolescent Psychology.
Suveg, C., Thomassin, K., & Morelen, D. (2016). Self-Monitoring. In D.W. Nangle, D.J. Hansen, R.L. Grover, J.N. Kingery, & C. Suveg (Eds.) Treating Internalizing Disorders in Children and Adolescents: Core Techniques and Strategies (pp. 230-250). New York: Guildford Press.
Jacob, M. L., Thomassin, K., Morelen, D., & Suveg, C. (2011). Emotion Regulation in Youth with Anxiety Disorders. In D. McKay and E.A. Storch (Eds.), Handbook of Anxiety Disorders in Children and Adolescents (pp. 171-185). New York, NY: Springer.