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Natalie Castellanos Ryan

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Professeure agrégée

Faculté des arts et des sciences - École de psychoéducation

Marie-Victorin office C464

natalie.castellanos.ryan@umontreal.ca

514 343-6111 #28511

PhD
2009 , Psychologie , King's College London (Royaume-Uni)

MSc
2002 , Éducation comparée , University of Oxford (Royaume-Uni)

BA
1999 , Psychologie , ITESO (Mexique)

Affiliations

  • Membre – GRIP — Groupe de recherche sur l’inadaptation psychosociale chez l’enfant
  • Membre – Centre de recherche Azrieli du CHU Sainte-Justine
  • Membre – OPES — Observatoire pour l'Éducation et la Santé des enfants

Education Programs

  • Social Sciences Social Sciences and Social Action
  • Social Sciences Social Sciences and Social Action
  • Social Sciences Social Sciences and Social Action
  • Social Sciences Social Sciences and Social Action
  • Social Sciences Social Sciences and Social Action
  • Social Sciences and Social Action Social Sciences

Courses

  • PSE6562 Méthodes de recherche en psychoéducation
  • PSE6573 Méthodes quantitatives - psychoéducation

Areas of Expertise

Student supervision Expand all Collapse all

Consommation problématique du cannabis et d’autres substances chez les jeunes adultes selon l’adversité vécue à l’enfance et l’impulsivité : une étude longitudinale prospective Thèses et mémoires dirigés / 2024 - 2024
Graduate : Vanasse, Gabrielle
Cycle : Master's
Grade : M. Sc.
Associations transactionnelles entre l’activité physique et les symptômes dépressifs et anxieux chez les filles et les garçons durant l’adolescence : considération du temps d’écran et du temps de sommeil Thèses et mémoires dirigés / 2023 - 2023
Graduate : Fortier, Laurianne
Cycle : Master's
Grade : M. Sc.
Participation au Programme Équipe et symptômes intériorisés chez l’enfant : effets médiateurs des pratiques parentales et des symptômes extériorisés Thèses et mémoires dirigés / 2021 - 2021
Graduate : Fortin, Marie-Jeanne
Cycle : Master's
Grade : M. Sc.
Les associations longitudinales entre les symptômes de psychopathologie et la consommation de cannabis à l’adolescence et le rôle de l’orientation sexuelle comme modérateur Thèses et mémoires dirigés / 2020 - 2020
Graduate : London-Nadeau, Kira
Cycle : Master's
Grade : M. Sc.
De la sensibilité différentielle à la diathèse-stress dans la prédiction de la consommation de substances à l’adolescence : interactions entre l’environnement familial et le tempérament au cours du développement Thèses et mémoires dirigés / 2018 - 2018
Graduate : Rioux, Charlie
Cycle : Doctoral
Grade : Ph. D.

Research projects Expand all Collapse all

Pubertal development and mental health in the 3D Cohort Study: Key biological, sociocultural and environmental correlates of puberty and their longitudinal association with mental health outcomes in boys and girls Projet de recherche au Canada / 2022 - 2030

Lead researcher : Natalie Castellanos Ryan
Co-researchers : Sophie Parent , Jean Séguin , Robert-Paul Juster , Michel Boivin , Catherine Herba , Tuong Vi Nguyen , Massimiliano Orri
Funding sources: IRSC/Instituts de recherche en santé du Canada
Grant programs: PVXXXXXX-(PJT) Subvention Projet

Prospective PET Study of High-Risk Youth Projet de recherche au Canada / 2021 - 2029

Lead researcher : Marco Leyton
Co-researchers : Natalie Castellanos Ryan
Funding sources: IRSC/Instituts de recherche en santé du Canada
Grant programs: PVXXXXXX-(PJT) Subvention Projet

Longitudinal associations between cannabis and polysubstance use and neurocognition across youth (13-27 years): Evidence from two prospective birth cohorts Projet de recherche au Canada / 2022 - 2028

Lead researcher : Natalie Castellanos Ryan
Co-researchers : Sophie Parent , Jean Séguin , Sarah Lippé , Nicholas Chadi , Marco Leyton , Massimiliano Orri
Funding sources: IRSC/Instituts de recherche en santé du Canada
Grant programs: PVXX5647-(MOP) Subvention de fonctionnement incluant les subventions de fonctionnement programmatiques (général)

Groupe de recherche sur l'inadaptation psychosociale chez l'enfant (GRIP). ( GRIPSYENF ) Projet de recherche au Canada / 2020 - 2028

Lead researcher : Sylvana Côté
Co-researchers : Jacques-Yves Montplaisir , Richard Ernest Tremblay , René Carbonneau , Sophie Parent , Frank Vitaro , Jean Séguin , Miriam Beauchamp , Sarah Lippé , Patricia Conrod , Mireille Joussemet , Thuy Mai Luu , Geneviève Mageau , Anne Monique Nuyt , Linda Booij , Isabelle Ouellet-Morin , Nathalie Fontaine , Natalie Castellanos Ryan , Julie Laurin , Geneviève Gariépy , Nicholas Chadi , Jean-Philippe Gouin , Marie-Claude Geoffroy , Evelyne Touchette , Marco Leyton , Gustavo Turecki , Marie-Claude Salvas , Sébastien Normand , Michel Boivin , Simon Larose , Ginette Dionne , Rose Marie Mara Brendgen , Catherine Herba , Gina Muckle , Frédéric Guay , Stéphane Duchesne , Catherine Ratelle , François Poulin , Anne-Sophie Denault , Célia Matte-Gagné , André Plamondon , Melanie Dirks , France Capuano , David Litalien , Caroline Temcheff , Catherine Haeck , Tina Montreuil , Kieran John O'Donnell , David D. Vachon , Anna Elizabeth Fago Weinberg
Funding sources: FRQSC/Fonds de recherche du Québec - Société et culture (FQRSC)
Grant programs: PV129894-(RG) Programme Regroupements stratégiques

Le développement et la prévention de la consommation de substances et de problémes de santé mentale chez les jeunes Projet de recherche au Canada / 2023 - 2026

Lead researcher : Natalie Castellanos Ryan
Funding sources: FRQS/Fonds de recherche du Québec - Santé (FRSQ)
Grant programs: PVXXXXXX-Bourse de chercheur-boursier : Junior 2

Transitioning to Adulthood: Risk and Protective Factors for Mental Health Problems (MHP's) between Adolescence and Adulthood in a representattive Population Sample Projet de recherche au Canada / 2021 - 2026

Lead researcher : Natalie Castellanos Ryan
Co-researchers : Marie-Claude Geoffroy
Funding sources: IRSC/Instituts de recherche en santé du Canada
Grant programs:

Canadian Cannabis and Psychosis Research Team (CCPRT) Projet de recherche au Canada / 2020 - 2026

Lead researcher : Patricia Conrod
Co-researchers : Sylvana Côté , Stéphane Potvin , Natalie Castellanos Ryan , Tomas Paus , Cecilia Flores , Sherry Stewart , Josiane Bourque , Candice Crocker , Phil Tibbo , Zdenka Pausova
Funding sources: IRSC/Instituts de recherche en santé du Canada
Grant programs: PVXXXXXX-Subvention d'équipe

From birth to adulthood: The role of age of cannabis use onset in the individual and environmental developmental pathways leading to substance use problems. Projet de recherche au Canada / 2019 - 2026

Lead researcher : Natalie Castellanos Ryan
Funding sources: IRSC/Instituts de recherche en santé du Canada
Grant programs: PVXXXXXX-(PJT) Subvention Projet

Life History Research Society Conference 2024 Projet de recherche au Canada / 2024 - 2025

Lead researcher : Isabelle Ouellet-Morin
Co-researchers : Natalie Castellanos Ryan , Marie-Claude Geoffroy
Funding sources: CRSH/Conseil de recherches en sciences humaines du Canada
Grant programs: PV152160-Subvention Connexion

The role of age of cannabis use onset in the developmental pathways leading to substance use problems by early adulthood: key mediators and moderators. Projet de recherche au Canada / 2019 - 2024

Lead researcher : Natalie Castellanos Ryan
Funding sources: IRSC/Instituts de recherche en santé du Canada
Grant programs: PVXX5647-(MOP) Subvention de fonctionnement incluant les subventions de fonctionnement programmatiques (général)

Talking at home and at school: The developmental trajectory of oral language among young children who speak minority languages Projet de recherche au Canada / 2018 - 2024

Lead researcher : Andrea Macleod
Co-researchers : Jean Séguin , Natalie Castellanos Ryan
Funding sources: CRSH/Conseil de recherches en sciences humaines du Canada
Grant programs: PVXXXXXX-Subvention Savoir

Temporal effects of alcohol and polysubstance use on neurocognition across youth (13-25 years): Evidence from a prospective birth cohort Projet de recherche au Canada / 2022 - 2023

Lead researcher : Natalie Castellanos Ryan
Co-researchers : Sophie Parent , Jean Séguin , Sarah Lippé , Nicholas Chadi , Marco Leyton
Funding sources: IRSC/Instituts de recherche en santé du Canada
Grant programs: PVXXXXXX-Subvention catalyseur

Pairs, prévention et développement psychosocial des enfants et des adolescents Projet de recherche au Canada / 2018 - 2023

Lead researcher : Frank Vitaro
Co-researchers : François Bowen , Stéphane Cantin , Isabelle Ouellet-Morin , Nathalie Fontaine , Natalie Castellanos Ryan , Marie-Claude Salvas , Sébastien Normand , Rose Marie Mara Brendgen , François Poulin , Anne-Sophie Denault , Melanie Dirks , Fanny-Alexandra Guimond
Funding sources: FRQSC/Fonds de recherche du Québec - Société et culture (FQRSC)
Grant programs: PVXXXXXX-(SE) Programme Soutien aux équipes de recherche - Stade de développement : Renouvellement

Challenges to the vulnerable child in the transitions from preschool to grade school in a pregnancy cohort Projet de recherche au Canada / 2016 - 2023

Lead researcher : Jean Séguin
Co-researchers : Sophie Parent , Isabelle Archambault , Sonia Lupien , Natalie Castellanos Ryan , William Fraser , Isabelle Marc-Series , Michel Boivin , Catherine Herba , Gina Muckle
Funding sources: IRSC/Instituts de recherche en santé du Canada
Grant programs: PVXXXXXX-(PJT) Subvention Projet

Exploring cannabis use and mental health in sexually and gender diverse youth: A qualitative, community-based study Projet de recherche au Canada / 2021 - 2022

Lead researcher : Rebecca Haines-Saah
Co-researchers : Jean Séguin , Natalie Castellanos Ryan , Robert-Paul Juster , Olivier Ferlatte , Nicholas Chadi
Funding sources: Commission de la santé mentale du Canada
Grant programs: PVXXXXXX-Subvention catalyseur

Facteurs cognitifs trans-diagnostiques et la prévention des troubles extériorisés. Projet de recherche au Canada / 2017 - 2022

Lead researcher : Natalie Castellanos Ryan
Funding sources: FRQS/Fonds de recherche du Québec - Santé (FRSQ)
Grant programs: PVXXXXXX-Bourse de chercheur-boursier : Junior 1

GROUPE DE RECHERCHE SUR L'INADAPTATION PSYCHOSOCIALE CHEZ L'ENFANT (GRIP) Projet de recherche au Canada / 2014 - 2021

Lead researcher : Frank Vitaro
Co-researchers : Jacques-Yves Montplaisir , Richard Ernest Tremblay , René Carbonneau , Éric Lacourse , Patricia Conrod , Sylvana Côté , Mireille Joussemet , Isabelle Ouellet-Morin , Nathalie Fontaine , Natalie Castellanos Ryan , Jean-Philippe Gouin , Marie-Claude Geoffroy , Evelyne Touchette , Marco Leyton , Gustavo Turecki , Robert O Pihl , Marie-Claude Salvas , Sébastien Normand , Michel Boivin , Simon Larose , Ginette Dionne , Rose Marie Mara Brendgen , Catherine Herba , Gina Muckle , Frédéric Guay , Stéphane Duchesne , Catherine Ratelle , François Poulin , Georges Tarabulsy , Marco M. Battaglia , Anne-Sophie Denault , Célia Matte-Gagné , André Plamondon , Melanie Dirks
Funding sources: FRQSC/Fonds de recherche du Québec - Société et culture (FQRSC)
Grant programs: PV129894-(RG) Programme Regroupements stratégiques

Shared and specific risk factors for early onset cannabis and other substance use and later substance use disorders: can we predict who will initiate cannabis use early and who will develop future substance use problems? Projet de recherche au Canada / 2019 - 2020

Lead researcher : Natalie Castellanos Ryan
Co-researchers : Sophie Parent , Frank Vitaro , Jean Séguin
Funding sources: Centre canadien sur les dépendances et l'usage de substances/Canadian Centre on Substance Use and Addiction
Grant programs: PVXXXXXX-Subvention catalyseur

Facteurs cognitifs trans-diagnostiques et la prévention des troubles extériorisés. Projet de recherche au Canada / 2017 - 2020

Lead researcher : Natalie Castellanos Ryan
Funding sources: FRQS/Fonds de recherche du Québec - Santé (FRSQ)
Grant programs: PVXXXXXX-Établissement de jeunes chercheurs Juniors 1

Gestion des comportements au préscolaire et préparation à l'entrée à l'école Projet de recherche au Canada / 2016 - 2020

Lead researcher : Natalie Castellanos Ryan
Funding sources: Fondation de l'Hôpital Ste-Justine
Grant programs:

Targeting impulsivity in early childhood in the prevention of externalizing psychopathology: Using RCT to test developmental models of individual (biology/dispositional) factors by environment interaction Projet de recherche au Canada / 2015 - 2018

Lead researcher : Natalie Castellanos Ryan
Co-researchers : Sophie Parent , Jean Séguin , Leila Ben Amor , Benoît Mâsse , William Fraser
Funding sources: IRSC/Instituts de recherche en santé du Canada
Grant programs: PVXXXXXX-Subvention de fonctionnement transitoire

Maternal stress, depression and anxiety during pregnancy and associations with biomarkers of stress in a Canadian pregnancy cohort. Projet de recherche au Canada / 2017 - 2017

Lead researcher : Catherine Herba
Co-researchers : Jean Séguin , Sarah Lippé , Sonia Lupien , Natalie Castellanos Ryan , William Fraser , Cathy Vaillancourt , Gina Muckle
Funding sources: IRSC/Instituts de recherche en santé du Canada
Grant programs: PVXX5647-(MOP) Subvention de fonctionnement incluant les subventions de fonctionnement programmatiques (général)

Maternal stress, depression and anxiety during pregnancy and early child development: A study of psychosocial and biological mechanisms Projet de recherche au Canada / 2016 - 2017

Lead researcher : Catherine Herba
Co-researchers : Jean Séguin , Sarah Lippé , Sonia Lupien , Natalie Castellanos Ryan , William Fraser , Cathy Vaillancourt , Gina Muckle
Funding sources: IRSC/Instituts de recherche en santé du Canada
Grant programs: PVXXXXXX-(PJT) Subvention Projet

Publications Expand all Collapse all

  1. Dupont, C., Castellanos-Ryan, N., Séguin, J., Muckle, G., Simard, M.-N., Shapiro, G.D., Herba, C., Fraser, W., & Lippé, S. (in press) The Predictive Value of Head Circumference Growth during the First Year of Life on Early Child Traits. Scientific Reports (Nature).
  2. Newton, N.C., Stapinski, L., Slade, T., Champion, K.E., Barrett, E.L., Chapman, C., Smout, A., Lawler, S., Mather, M., Castellanos-Ryan, N., Conrod, P.J. & Teesson, M. (in press). Pathways to prevention: Protocol for the CAP (Climate and Preventure) study to evaluate the long-term effectiveness of school-based universal, selective and combined alcohol misuse prevention into early adulthood. BMC Public Health.
  3. Baker, T.E., Castellanos-Ryan, N.,  Schumann, G., Cattrell, A., Flor, H., Nees, F., Banaschewski, T., Bokde, A., Whelan, B., Bueche, C., Bromberg, U., Papadopoulos Orfanos, D., Gallinat, J., Garavan, H., Heinz, A., Walter, H., Brühl, R., Gowland, P., Paus, T., Poustka, L., Martinot, J.-L., Lemaitre, H., Artiges, E., Paillère Martinot, M.-L., Smolka, M.N., Conrod, P.J. and the Imagen Consortium (In press). Modulation of orbitofrontal-striatal reward activity by dopaminergic functional polymorphisms contributes to a predisposition to alcohol misuse in early adolescence. Psychological Medicine.
  4. *Rioux, C., **Castellanos-Ryan, N., Parent, S., Vitaro, F., Tremblay, R. E. & Séguin, J. (in press) Age of cannabis use onset and adult drug abuse symptoms: a prospective study of common risk factors and indirect effects. Canadian Journal of Psychiatry.
  5. Perrier-Ménard, E., Castellanos Ryan, N., O'Leary-Barrett, M., Girard, Al., Conrod, P. (2017) The impact of youth internalising and externalising symptom severity on the effectiveness of brief personality-targeted interventions for substance misuse:  A cluster randomised trial. Addictive behaviors, 75, 138-144.
  6. Brière, F.N., Pascal, S., Dupéré, V., Castellanos-Ryan, N., Allard, F., Yale-Soulière, G. & Janosz, M. (2017) Internalizing symptoms and the risk of secondary school dropout. British Journal of Psychiatry, 211, 163-168.
  7. Fernández-Calderón, F., Díaz Batanero, C., Lozano, O. M., Rojas Tejada. A.J., Castellanos-Ryan, N. (2017). Psychometric properties of the substance use risk profile scale: the Spanish version for the European context. Adicciones, 0, 909.
  8. Castellanos-Ryan, N., Parent, S., Vitaro, F., Tremblay, R.E., Séguin, J. (2017) Adolescent Cannabis Use, change in neurocognitive function at 20 years of age, and high-school graduation: a prospective longitudinal/observational study. Development and Psychopathology, 29 (4), 1253-1266. DOI: doi.org/10.1017/S0954579416001280.
  9. MacLeod, A., Castellanos Ryan, N., Parent, S., Jacques, S., Séguin, J. (2017). Modelling vocabulary development among multilingual children prior to and following school entry. International Journal of Bilingual Education and Bilingualism, DOI: dx.doi.org/10.1080/13670050.2016.1269718.
  10. *Marschall-Lévesque, S., **Castellanos-Ryan, N., Parent, S., Renaud, J., Vitaro, F., Boivin, M., Tremblay, R.E. & Séguin, J.R. (2017) Peer Victimization, Suicidal Ideation and Alcohol use in Adolescence: a Longitudinal Study Supporting the Self-Medication Model. Journal of Adolescent Health, 60 (4), 380-387.
  11. Castellanos-Ryan, N., Briére, F.N., O’Leary-Barrett, M., Banaschewski, T., Bokde, A.L.W., Bromberg, U., Büchel, C., Flor, H., Frouin, V., Gallinat, J.,  Garavan, H., Martinot, J.L., Nees, F., Paus, T., Pausova, Z., Rietschel, M., Robbins, T.W., Smolka, M.N., Whelan, R., Schumann, G., Conrod, P.J., and the IMAGEN Consortium (2016).The structure of psychopathology in adolescence and its common personality and cognitive correlates, Journal of Abnormal Psychology, 125, 1039-1052.
  12. *Rioux, C., Castellanos-Ryan, N., Parent, S., & Séguin, J.R. (2016).The interaction between temperament and family factors in adolescent substance use and externalizing problems: Diathesis-stress or differential susceptibility? Developmental Review, 40, 117-150.
  13. *Rioux, C., Castellanos-Ryan, N., Parent, S., Vitaro, F., Tremblay, R.E., & Séguin, J.R. (2016) Differential susceptibility to environmental influences: Interaction between child temperament and parenting in adolescent alcohol use. Development and Psychopathology, 28, 265-275.
  14. Newton, N., Barrett, E., Castellanos-Ryan, N., Kelly, E., Champion, K., Stapinksi, L., Conrod, P., Slade, T., Nair, N., Teesson, M. (2016). The validity of the Substance Use Risk Profile Scale (SURPS) among Australian adolescents and comparisons with the United Kingdom. Addictive Behaviours, 53, 23-30.
  15. O’Leary-Barrett, M., Castellanos-Ryan, N., Pihl, R.O., Conrod, P.J. (2016) Mechanisms of personality-targeted intervention effects on adolescent alcohol misuse, internalising and externalising symptoms. Journal of Consulting and Clinical Psychology, 84, 438-452.
  16. Castellanos-Ryan, N., Struve, M., Whelan, R., Banaschewski, T., Barker, G.J., Bokde, A.L.W., Bromberg, U., Büchel, C., Flor, H., Fauth-Bühler, M., Frouin, V., Gallinat, J.,  Gowland, P., Heinz, A., Itterman, I., Lawrence, C., Martinot, J.L., Nees, F., Paus, T., Pausova, Z., Rietschel, M., Robbins, T.W., Smolka, M.N., Schumann, G., Garavan, H., Conrod, P.J., and the IMAGEN Consortium (2014).  Neurocognitive correlates of the common and specific variance across symptoms of externalizing behavior in adolescence. American Journal of Psychiatry, 171:1310–1319.
  17. Stringaris, A.,Castellanos-Ryan, N., Banaschewski, T., Barker, G.J., Bokde, A.L.W., Bromberg, U., Büchel, C., FlorH., Fauth-Bühler, M., Frouin,V., Gallinat, J., Garavan, H., Gowland,P., Heinz, A., Itterman, I., Lawrence, C., Martinot, J.L., Nees, F., Paillere-Martinot, M.-L., Paus, T., Pausova, Z., Rietschel, M., Robbins, T.W., Schumann, G., Smolka, M.N., Goodman, R., Conrod, P.J., and the IMAGEN Consortium. (2014) Mania symptoms in adolescents: two dimensions with differential links to cognitive performance and neural circuitry. Journal of Child Psychology and Psychiatry, 55, 1380-9. (Both authors contributed equally to the accomplishment of this work).
  18. Robles-García, R., Fresán, A., Castellanos-Ryan, N., Conrod, P.J., Gómez D., G. de Quevedo y Domínguez, M.E., Raffulf, C., Real, T., Vásquez, L. & Medina-Mora, M.E. (2014). Spanish version of the Substance Use Risk Profile Scale: Factor structure, reliability, and validity in Mexican adolescents. Psychiatry Research, 220, 1113-7.
  19. Castellanos-Ryan, N., Séguin, J.R., Vitaro, F., Parent, S., & Tremblay, R.E. (2013). A multimodal intervention for disruptive kindergarten children reduces substance-use across adolescence: a randomized control trial. The British Journal of Psychiatry, 203, 188-195.
  20. Castellanos-Ryan, N., Parent, S., Vitaro, F., Tremblay, R.E., & Séguin, J.R. (2013). Pubertal development, personality and substance use: A 10-year longitudinal study from childhood to adolescence. Journal of Abnormal Psychology, 122, 782-796.
  21. *Montigny, C., Castellanos-Ryan, N., Whelan,  R., Banaschewski, T., Barker, G.J., Büchel, C., Flor, H., Ittermann, B., Mann, K., Martinot, J-L.; Nees, F. , Lathrop, M., Loth, E., Paus, T., Pausova, Z.,Rietschel, M., Robbins, T., Schumann, G., Smolka, M.N.,Gallinat, J., Struve, M., Garavan H.,Conrod, P. and the IMAGEN Consortium. (2013). A phenotypic structure and neural correlates of compulsive-like behaviors in adolescents. PlosOne, 8 (11), e80151.
  22. *Marschall-Lévesque, S., Castellanos-Ryan, N., Vitaro, F. & Séguin, J.R. (2013). Moderators of Peer Influence on Adolescent Substance Use. Addictive Behaviors, 39 (1), 48-70.
  23. O’Leary-Barrett, M., *Topper, L., Al-Khudhairy, N., Pihl, R.O., Castellanos-Ryan, N., Mackie, C.J., Conrod, P.J. (2013). Two-year impact on internalising and externalising problems in youth: a randomised controlled trial of brief, personality-targeted, teacher-delivered interventions. Journal of the American Academy of Child and Adolescent Psychiatry, 52, 911-920.
  24. *Castonguay-Jolin, L., *Perrier-Ménard, E., Castellanos-Ryan, N., Parent, S., Vitaro, F., Tremblay, R.E., Garel, P., Séguin, J.R., & Conrod, P.J. (2013).Validation de la traduction française du SURPS pour une population d'adolescents québécois. Canadian Journal of Psychiatry, 58, 538–545.
  25. Castellanos-Ryan, N., O’Leary-Barrett, M., & Conrod, P.J. (2013). Substance-use in childhood and adolescence: Developmental processes and their clinical implications. Journal of the Canadian Academy of Child and Adolescent Psychiatry, 22, 41-46.
  26. Pingault, J.B.,Côte, S., Booij, L., Ouellet-Morin, I., Castellanos-Ryan, N., Vitaro, F.,Turecki, G.,& Tremblay, R.E.  (2013). Age-dependent Effect of MAOA Gene on Physical Aggression and Criminality? Evidence from a Longitudinal Sample of Boys. Molecular Psychiatry, 18 (11), 1151.
  27. Mackie, C., O’Leary-Barrett, M., Al-Khudhairy, N., Castellanos-Ryan, N., Struve, M.,*Topper, L., & Conrod, P.J. (2013). Adolescent bullying, cannabis use and emerging psychotic experiences: A longitudinal general population study. Psychological Medicine, 7, 1-12.
  28. Conrod, P.J., O’Leary-Barrett, M., Newton, N., *Topper, L., Al-Khudhairy, N., Castellanos-Ryan, N., Mackie, C. (2013). A cluster randomized trial demonstrates the effectiveness of a selective, personality-targeted prevention program for adolescent alcohol misuse.  JAMA-Psychiatry (formerly, Archives of General Psychiatry), 70, 334-342.
  29. Castellanos-Ryan, N., O’Leary-Barrett, M., Sully, L., & Conrod, P. (2012). Sensitivity and Specificity of a Brief Personality Screening Instrument in Predicting Future Substance Use, Emotional and Behavioral Problems. 18-Month Predictive Validity of the Substance Use Risk Profile Scale. Alcoholism: Clinical and Experimental Research, 37, E281-E290.

Communications Expand all Collapse all

  • Castellanos-Ryan, N., Brière, F.N., O’Leary-Barrett, M., Conrod, P. (2017). The structure of psychopathology in adolescence: Invariance across sex and countries, and its personality and cognitive correlates. Poster presented at the biennial meeting of the Society for Research on Child Development, April 4-9, Austin, USA.
  • Castellanos-Ryan, N.* (2016) Is cannabis use during adolescence associated with poor cognitive, academic and drug use outcomes in adulthood? Invited lecture, Journée de Conférences Scientifiques ouvert au grand public « Cannabis and youth health – Recent findings and implications for Canadian drug policy”, Centre de Recherche du CHU Sainte-Justine, April 5, Montreal CA.
  • Castellanos-Ryan, N.* (2015) Understanding adolescent substance use, comorbid psychopathology and its prevention. Invited lecture, Programme des Conférences Scientifiques du Centre de Recherche du CHU Sainte-Justine, June 30, Montreal CA.
  • Castellanos-Ryan, N., Parent, S., Vitaro, F., Tremblay, R.E., Séguin, J. (2015) Adolescent Cannabis Use, change in neurocognitive function at 20 years of age, and high-school graduation: a longitudinal observational study. Poster presented at the biennial meeting of the Society for Research on Child Development, March 19-21, Philadelphia, USA.
  • Castellanos-Ryan, N.*, Parent, S., Vitaro, F., Tremblay, R.E., Séguin, J. (2014). Early adolescent cannabis use is linked to problems in learning by trial-and-error in young adult males. Paper presented at the biennial meeting of the Life History Research Society, May 8-10, Pittsburgh, USA.
  • Castellanos-Ryan, N.*, Parent, S., Vitaro, F., Tremblay, R.E., Séguin, J. (2014). Is Cannabis Use During Adolescence Associated with Cognitive Impairments in Young Adulthood? Paper presented at the biennial meeting of the Society for Research on Adolescence, March 20-23, Austin, USA.
  • Castellanos-Ryan, N.*, Struve, M., Whelan, R., Garavan, H., Conrod, P., the IMAGEN consortium (2013). The role of impulsivity in the phenotypic structure of adolescent substance use and conduct disorder symptoms. Paper presented at Annual Scientific Meeting of the Research Society on Alcoholism, June 22-26, Orlando, USA.
  • Séguin, J., Castellanos-Ryan, N.*, Parent, S., Vitaro, F., Tremblay, R.E. (2013). An intervention for disruptive behavior in childhood reduces substance use across adolescence. Paper presented at Annual Scientific Meeting of the Research Society on Alcoholism, June 22-26, Orlando, USA.
  • Castellanos-Ryan, N.*, Séguin, J.R. , Vitaro, F., Parent, S., & Tremblay, R.E. (2013). An Intervention for Disruptive Behavior in Childhood Reduces Adolescent Substance Use in Boys. Poster presented at the biennial meeting of the Society for Research on Child Development, April 17-20, Seattle, USA.
  • Castellanos-Ryan, N.*, Conrod, P. J., Arseneault, L., Vitaro, F., Tremblay, R. E., Séguin, J. R. (2012). The structure and stability of substance use and conduct disorder symptoms across adolescence. Paper presented at the biennial meeting of the Life History Research Society, October 3-6, London, UK.
  • Castellanos-Ryan, N.*, Vitaro, F., Parent, S., Tremblay, R.E., & Séguin, J.R. (2012). An intervention for disruptive behavior in childhood reduces substance use across adolescence. Poster presented at the biennial meeting of the Life History Research Society, October 3-6, London, UK.

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Natalie Castellanos Ryan, PhD, Université de Montréal

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