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O'Connor, Kieron


Ph. D., Psychology
Researcher, Institut universitaire en santé mentale de Montréal Research Center
Full Professor, Department of Psychiatry, Montreal University

Phone: 514-251-4015
kieron.oconnor@umontreal.ca


Areas of expertise

Obsessive compulsive disorder; Anxiety; Gilles de la Tourette Syndrome; Cognitive-Behavioural Therapy

Profile

Kieron O'Connor works on the implementation and improvement of the effectiveness of psychological interventions for patients with obsessive-compulsive disorder spectrum (OCD). He collaborates with researchers and professionals to provide treatment of OCD, chronic motor tics, Gilles de la Tourette syndrome, body dysmorphic disorder, as well as compulsive accumulation and eating disorders. He is Director of the Centre for the Study of  The Obsessive-Compulsive Disorder and Tic Disorder Studies Centre.

Grants

  • Evaluation of a cognitive psychophysiological treatment for Tourette syndrome and tic disorders (Principal Investigator, CIHR, 2015-2019).
  • Evaluation of a new cognitive therapy (inference-based therapy) for the treatment of obsessive compulsive disorder (Principal Investigator, CIHR, 2011-2016).
  • Muldisciplinary grouping of clinical research of the obsessive compulsive disorder spectrum (Principal Investigator, FRQS, 2010-2014).
  • The impact of comorbidity on cognition and behaviour in adults and children with Gilles de la Tourette syndrome (Co-Principal Investigator, CIHR, 2009-2013).
  • Reasoning processes in obsessional and delusional beliefs (Principal Investigator, IRSC, 2007-2012)

Awards

  • Desjardins Prize of Distinction (2007)

Publications

2016

Guay, S., Nachar, N., Lavoie, M. E., Marchand, A., & O’Connor, K. P. (2016). The buffering power of overt socially supportive and unsupportive behaviors from the significant other on posttraumatic stress disorder individuals’ emotional state. Anxiety Stress Coping, 1-14. Epub ahead of print. Pubmed

Aardema, F., KP, O. C., Delorme, M. E., & Audet, J. S. (2016). The Inference-Based Approach (IBA) to the Treatment of Obsessive-Compulsive Disorder: An Open Trial Across Symptom Subtypes and Treatment-Resistant Cases. Clin Psychol Psychother. Epub ahead of print. Pubmed

Morand-Beaulieu, S., O’Connor, K. P., Richard, M., Sauve, G., Leclerc, J. B., Blanchet, P. J., & Lavoie, M. E. (2016). The Impact of a Cognitive-Behavioral Therapy on Event-Related Potentials in Patients with Tic Disorders or Body-Focused Repetitive Behaviors. Front Psychiatry, 7, 81. Pubmed

Julien, D., O’Connor, K., & Aardema, F. (2016). The inference-based approach to obsessive-compulsive disorder: A comprehensive review of its etiological model, treatment efficacy, and model of change. J Affect Disord, 202, 187-196. Pubmed

2015

Germain, M., Chuang, M. N., Sauve, G., O’Connor, K. P., Blanchet, P. J., & Lavoie, M. E. (2015). The impact of comorbidity on event-related brain topography in patients presenting chronic tic disorders and tourette syndrome. Int J Dev Neurosci, 47(Pt A), 102. Pubmed

Morand-Beaulieu, S., Fernandes, I., Sauve, G., O’Connor, K. P., Blanchet, P. J., & Lavoie, M. E. (2015). Electrophysiological similarities in Tourette syndrome and chronic tic disorder. Int J Dev Neurosci, 47(Pt A), 63. Pubmed

Roberts S, O'Connor K, Aardema F: The role of emotions regulation on body-focused repetitive behaviors. Behavioural and Cognitive Psychotherapy.

O'Connor K, Lavoie M, Blanchet P, St-Pierre-Delorme M-E: Evaluation of a cognitive psychophysiological model for management of tic disorders: An open trial. British Journal of Psychiatry.

Janelle C, O’Connor K, Dupuis G : Evaluating illness representations in heart transplant patients. Journal of Health Psychology.

Roberts S, O'Connor K, Aardema F, Bélanger C: The impact of emotions on body-focused repetitive behaviors: Evidence from a non-treatment-seeking sample. Journal of Behavior Therapy and Experimental Psychiatry.

Pérodeau G, Grenon E, Grenier S, O'Connor K: Systemic model of chronic benzodiazepine use among mature adults. Aging and Mental Health.

Purcell-Lalonde, M., O'Connor K, Aardema, F., Coelho, JS: Food for thought: Ego-dystonicity and fear of self in eating disorders. European Eating Disorders Review.

2014

Katzman, M. A., Bleau, P., Blier, P., Chokka, P., Kjernisted, K., Van Ameringen, M., Canadian Anxiety Guidelines Initiative Group on behalf of the Anxiety Disorders Association of Canada/Association Canadienne des troubles, anxieux McGill, University, Antony, M. M., Bouchard, S., Brunet, A., Flament, M., Grigoriadis, S., Mendlowitz, S., O'Connor, K., Rabheru, K., Richter, P. M., Robichaud, M., Walker, J. R. (2014). Canadian clinical practice guidelines for the management of anxiety, posttraumatic stress and obsessive-compulsive disorders. BMC Psychiatry, 14 Suppl 1, S1-S83. Pubmed

O'Connor, K., St-Pierre-Delorme, M. E., Leclerc, J., Lavoie, M., & Blais, M. T. (2014). Meta-cognitions in tourette syndrome, tic disorders, and body-focused repetitive disorder. Can J Psychiatry, 59(8), 417-425. Pubmed

O'Connor K: Individual case formulation. Book review. Canadian Psychology 55(4): 312, 2014.

Careau Y, O'Connor KP, Turgeon L, Freeston MH: Cognitive reactivity in obsessional rumination: A naturalistic and longitudinal investigation. Journal of Experimental Psychopathology 5(4): 425-456, 2014.

Taylor, S., McKay, D., Miguel, E. C., De Mathis, M. A., Andrade, C., Ahuja, N., Sookman, D., Kwon, J. S., Huh, M. J., Riemann, B. C., Cottraux, J., O'Connor, K., Hale, L. R., Abramowitz, J. S., Fontenelle, L. F., Storch, E. A. (2014). Musical obsessions: A comprehensive review of neglected clinical phenomena. J Anxiety Disord, 28(6), 580-589. Pubmed

Nachar, N., Lavoie, M. E., Marchand, A., KP, O. C., & Guay, S. (2014). The effect of talking about psychological trauma with a significant other on heart rate reactivity in individuals with posttraumatic stress disorder. Psychiatry Res. Epub ahead of print. Pubmed

Nachar, N., Lavoie, M. E., Marchand, A., KP, O. C., & Guay, S. (2014). The effect of talking about psychological trauma with a significant other on heart rate reactivity in individuals with posttraumatic stress disorder. Psychiatry Res. Epub ahead of print. Pubmed

2013

Schoendorff, B., Purcell-Lalonde, M., & O'Connor, K. (2013). Les thérapies de troisième vague dans le traitement du trouble obsessionnel-compulsif : Application de la thérapie d'acceptation et d'engagement. Sante Ment Que, 38(2), 153-173. Pubmed

O'Connor K. Introduction to the Special Issue: Behavioral, Cognitive, and Emotional Processes and Symptom Change during Inference-Based Therapy for Obsessional Compulsive Disorder. International Journal of Cognitive Therapy,  March, Vol. 7, No. 1: 1–5.

Schoendorff, B., Purcell-Lalonde, M., & O'Connor, K. (2013). Les thérapies de troisième vague dans le traitement du trouble obsessionnel-compulsif : Application de la thérapie d'acceptation et d'engagement. Sante Ment Que, 38(2), 153-173. Pubmed

O'Connor K. Introduction to the Special Issue: Behavioral, Cognitive, and Emotional Processes and Symptom Change during Inference-Based Therapy for Obsessional Compulsive Disorder. International Journal of Cognitive Therapy,  March, Vol. 7, No. 1: 1–5

Perreault V. & O’Connor K. Inference-Based Therapy: Processes of Change in Compulsions and Obsessional Beliefs. International Journal of Cognitive Therapy, March, Vol. 7, No. 1: 6–28.

Béland M. O’Connor K. Evolution of Emotions, Obsessions, and Compulsions in People Recovering from Obsessional Compulsion during Inference-Based Therapy. International Journal of Cognitive Therapy March, Vol. 7, No. 1: 29–42.

Del Borrello L., O’Connor K. The Role of Obsessive Beliefs and Inferential Confusion in Predicting Treatment Outcomes for Different Subtypes of Obsessive-Compulsive Disorder. International Journal of Cognitive Therapy March, Vol. 7, No. 1: 43–66.

Van Niekerk J., Brown G., Aardema F.,  O’Connor K. Integration of Inference-Based Therapy and Cognitive-Behavioral Therapy for Obsessive-Compulsive Disorder—A Case Series. International Journal of Cognitive Therapy, March, Vol. 7, No. 1: 67–82

Laverdure, A., O'Connor, K., & Lavoie, M. E. (2013). Cognitive aspects of hyperactivity and overactivity in preadolescents with tourette syndrome. Psychiatry J, 2013, 198746. Pubmed

Roberts, S., O'Connor, K., & Belanger, C. (2013). Emotion regulation and other psychological models for body-focused repetitive behaviors. Clin Psychol Rev, 33(6), 745-762. Pubmed

O'Connor, K., Freeston, M., Delorme, M. E., Aardema, F., Polman, A., Careau, Y., Grenier, S. (2012). Covert neutralization in the treatment of OCD with overt compulsions. Journal of Obsessive-Compulsive and Related Disorders, 1(4), 274-282. Résumé/Abstract 

Borgeat, F., O'Connor, K., Amado, D., & St-Pierre-Delorme, M. E. (2013). Psychotherapy Augmentation through Preconscious Priming. Front Psychiatry, 4, 15. Pubmed

Lavoie, M. E., Leclerc, J., & O'Connor, K. P. (2013). Bridging neuroscience and clinical psychology: cognitive behavioral and psychophysiological models in the evaluation and treatment of Gilles de la Tourette syndrome. Neuropsychiatry, 3(1), 75-87. Résumé / Abstract

Dettore, D., & O'Connor, K. OCD and Cognitive Illusions. Cognitive Therapy and Research, 37(1), 109-121. Résumé/Abstract

Taillon, A., O'Connor, K., Dupuis, G., & Lavoie, M. (2013). Inference-Based Therapy for Body Dysmorphic Disorder. Clinical Psychology & Psychotherapy, 20(1), 67-76. Pubmed

2012

O’Connor, K. & Aardema, F. (2012). Living in a bubble : Dissociation, relational consciousness and obsessive compulsive disorder. Journal of Consciousness Studies, 19, 216-246.

O'Connor, K. (2012). Auditory processing in autism spectrum disorder: A review. Neuroscience and Biobehavioral Reviews, 36(2): 836-854. Pubmed

O'Connor, K., Belanger, L., Aardema, F., Perodeau, G., Harel, F (2012). The predictive utility of health preoccupations and outcome expectancies prior to benzodiazepine withdrawal. Journal of Substance Use 17(2): 122-133.

Leclerc, J., O'Connor, K.P., Forget, J. , Lavoie, M. E. (2012). Effectiveness of an intervention program for managing explosive outbursts in children with Tourette syndrome. Pratiques Psychologiques 18(3): 221-244.

O'Connor, K., Ecker, W., Lahoud, M., Roberts, S. (2012). A review of the inference-based approach to obsessive compulsive disorder. Verhaltenstherapie 22(1): 47-55

Aardema, F. , O'Connor, K. (2012). Dissolving the tenacity of obsessional doubt: Implications for treatment outcome. Journal of Behavior Therapy and Experimental Psychiatry 43(2): 855-861. Pubmed

2011

Bertrand, A., Belanger, C., & O'Connor, K. (2011). [Eating disorders (ED) and Obsessive-compulsive disorders (OCD): common factors]. Sante Ment Que, 36(1), 149-179. Pubmed

Grenier, S., Schuurmans, J., Goldfarb, M., Preville, M., Boyer, R., O'Connor, K., Potvin, O., Hudon, C. (2011). The epidemiology of specific phobia and subthreshold fear subtypes in a community-based sample of older adults. Depression and anxiety, 28(6), 456-463. Pubmed

Grenier, S., Preville, M., Boyer, R., O'Connor, K., Beland, S. G., Potvin, O., Hudon, C.Brassard, J. (2011). The Impact of DSM-IV Symptom and Clinical Significance Criteria on the Prevalence Estimates of Subthreshold and Threshold Anxiety in the Older Adult Population. The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry, 19(4), 316-326. Pubmed

Guay, S., Beaulieu-Prevost, D., Beaudoin, C., St-Jean-Trudel, E., Nachar, N., Marchand, A., O'Connor, K.P. (2011). How do social interactions with a significant other affect PTSD symptoms? An empirical investigation with a clinical sample. Journal of Aggression, Maltreatment & Trauma, 20(3), 280-303. Résumé / Abstract

Lavoie, M. E., Imbriglio, T. V., Stip, E., & O'Connor, K. P. (2011). Neurocognitive Changes Following Cognitive-Behavioral Treatment in Tourette Syndrome and Chronic Tic Disorder. International Journal of Cognitive Therapy, 4(1), 34-50. Résumé / Abstract 

Leclerc, J., O'Connor, K. P., Forget, J., & Lavoie, M. E. (2011). Behavioral program for managing explosive outbursts in children with Tourette syndrome. Journal of Developmental and Physical Disabilities Vol, 23(1), 33-47. Pas dans Pubmed

Polman, A., O'Connor, K. P., & Huisman, M. (2011). Dysfunctional belief-based subgroups and inferential confusion in obsessive-compulsive disorder. Personality and Individual Differences, 50(2), 153-158.

Perodeau, G., Paradis, I., Grenier, S., O'Connor, K., & Grenon, E. (2011). Chronic psychotropic drug use among frail elderly women receiving home care services. J Women Aging, 23(4), 321-341. Pubmed

St-Pierre-Delorme, M. E., Lalonde, M. P., Perreault, V., Koszegi, N., & O'Connor, K. (2011). Inference-based therapy for compulsive hoarding: A clinical case study. Clinical Case Studies, 10 (4), 291-303. Resumé / Abstract

Taillon, A., O'Connor, K., Dupuis, G., & Lavoie, M. (2011). Inference-Based Therapy for Body Dysmorphic Disorder. Clinical psychology & psychotherapy. Pubmed

2010

Aardema, F., O'Connor, K., Cote, S., & Taillon, A. (2010). Virtual reality induces dissociation and lowers sense of presence in objective reality. Cyberpsychology, behavior and social networking, 13(4), 429-435. Pubmed

Aardema, F., Wu, K. D., Careau, Y., O'Connor, K., Julien, D., & Dennie, S. (2010). The Expanded Version of the Inferential Confusion Questionnaire: Further Development and Validation in Clinical and Non-Clinical Samples. Journal of Psychopathology and Behavioral Assessment, 32(3), 448-462.

Leclerc, J., Laverdure, A., Forget, J., O'Connor, K., & Lavoie, M. (2010). Intervention specialisée pour la gestion des épisodes explosifs auprès d'un enfant atteint du syndrome de Gilles de la Tourette et d'un trouble deficitaire de l'attention avec hyperactivité. Journal de Therapie Comportementale et Cognitive, 20(3), 104-111. 

2009

Aardema, F., O'Connor, K., Pelissier, M.-C., & Lavoie, M. (2009). The quantification of doubt in obsessive-compulsive disorder. International Journal of Cognitive Therapy, 2(2), 188-205. - Voir l'article

Aardema, F., Radomsky, A.S., O'Connor, K.P., Julien, D. (2009). Inferential Confusion, Obsessive Beliefs and Obsessive-Compulsive Symptoms: A Multidimensional Investigation of Cognitive Domains. Clinical Psychology and Psychotherapy, 15(4), 227-238.

Borgeat, F., Stankovic, M., Khazaal, Y., Rouget, B., Baumann, M., Riquier, F., O'Connor, K., Jermann, F., Zullino, D., Bondolfi, G. (2009). Does the form or the amount of exposure make a difference in the cognitive-behavioral therapy treatment of social phobia? Journal of Nervous and Mental Disease, 197(7), 507-513. Pubmed 

Grenier, S., O'Connor, K. P., & Belanger, C. Belief in the obsessional doubt as a real probability and its relation to other obsessive-compulsive beliefs and to the severity of symptomatology. The British journal of clinical psychology / the British Psychological Society, 49(Pt 1), 67-85. Pubmed

Grenier S, O'Connor K, Bélanger C. (2009). Obsessional beliefs, compulsive behaviours and symptom severity: their evolution and interrelation over stages of treatment. Clinical Psychology and Psychotherapy, 15(1):15-27.

Julien, D., O'Connor, K., & Aardema, F. (2009). Intrusions related to obsessive-compulsive disorder: a question of content or context? Journal of Clinical Psychology, 65(7), 709-722. Pubmed

O'Connor, K., Koszegi, N., Aardema, F., van Niekerk, J., & Taillon, A. (2009). An inference-based approach to treating obsessive-compulsive disorders. Cognitive and Behavioral Practice, 14(4), 420-429.

O'Connor, K., Laverdure, A., Taillon, A., Stip, E., Borgeat, F., & Lavoie, M. (2009). Cognitive behavioral management of Tourette's syndrome and chronic tic disorder in medicated and unmedicated samples. Behaviour Research and Therapy, 47(12), 1090-1095. Pubmed 

O'Connor, K. (2009). DIRT-danger ideation reduction therapy for obsessive-compulsive washers: a comprehensive guide to treatment. Clinical Psychology and Psychotherapy, Jul 19(Epub ahead of print). Pubmed 

O'Connor, K. (2009). Cognitive and Meta-cognitive Dimensions of Psychoses. Canadian Journal of Psychiatry-Revue Canadienne De Psychiatrie, 54(3), 152-159.

O'Connor, K. P., Janelle, C., Coutu, M. F., Rouleau, A., Lessard, M. J., Kirouac, C., et al. (2009). 'I'm Cured But....' Perceptions of Illness Following Treatment. Journal of Health Psychology, 14(2), 278-287.

O'Connor K, Marchand A, Brousseau L, Aardema F, Mainguy N, Landry P, Savard P, Léveillé C, Lafrance V, Boivin S, Pitre D, Robillard S, Bouthillier D. (2009). Cognitive-behavioural, pharmacological and psychosocial predictors of outcome during tapered discontinuation of benzodiazepine. Clinical Psychology and Psychotherapy, 15(1):1-14.

Wu, K., Aardema, F., & O'Connor, K. (2009). Inferential confusion, obsessive beliefs, and obsessive-compulsive symptoms: a replication and extension. Journal of Anxiety Disorders, 23(6), 746-752. Pubmed

2008

O'Connor, K. P., Lavoie, M. E., Stip, E., Borgeat, F., & Laverdure, A. (2008). Cognitive-behaviour therapy and skilled motor performance in adults with chronic tic disorder. Neuropsychological Rehabilitation, 18(1), 45-64.

2007

Lavoie, M., Thibault, G., O'Connor, K.,et al. (2007). "Memory and Executive Functions in Adults with Gilles de la Tourette Syndrome and Chronic Tic Disorder." Cognitive Neuropsychiatry 12(2): 165-181.

 
O'Connor, K., Stip, E., et al. (2007). "Treating Delusional Disorder: A Comparison of Cognitive-Behavioural Therapy and Attentional Placebo Control." The Canadian Journal of Psychiatry 52(3): 182-190.

Radomsky, A. S., Bohne, A., O'Connor, K., et al. (2007). "Treating Comorbid Presentations: OCD and Disorders of Impulse Control." In: Anthony, M.M., Purdon, C., Summerfeldt, L.J. Psychological treatment of OCD: Fundamentals and beyond. New York, APA Publications.

2006

Aardema, F., Kleijer, T.M.R., O'Connor, K., et al. (2006). "Processes of Inference, Thinking, and Obsessive-Compulsive Behaviour in a Normal Sample." Psychological Reports 99: 213-220.

Aardema, F., O’Connor, K.P., et al. (2006). "Inferential Confusion and Obsessive Beliefs in Obsessive-Compulsive Disorder." Cognitive Behavior Therapy 35: 138-147.

Berthiaume, C., Turgeon, L., O'Connor, K., et al. (2006). "Évaluation et traitement du trouble obsessionnel-compulsif à l'enfance et à l'adolescence". In: Turgeon, L., Gendreau, P. Les troubles anxieux chez les enfants et les adolescents. Marseille, France, Solal: 129-154.

Grenier, S., O'Connor, K., et al. (2006). "Surinvestissement des doutes obsessionnels et de leurs conséquences anticipées chez les patients qui souffrent d'un trouble obsessionnel-compulsif (TOC): Un portrait sociodémographique et clinique." Revue Francophone de Clinique Comportementale et Cognitive 11(4): 17-25.

Grenier, S., O'Connor, K., et al. (2006). "Le trouble obsessionnel-compulsif et l'insight: une revue critique de la littérature." Canadian Psychology/Psychologie Canadienne 47(2): 96-109.

Julien, D., O’Connor, K.P. (2006). "Intrusive Thoughts, Obsessions, and Appraisals in Obsessive-Compulsive Disorders: A Critical Review." Clinical Psychology Review 27(3): 366-383.Julien, D., O’Connor, K.P., et al. (2006). "The Specificity of Belief Domains in Obsessive-Compulsive Symptom Subtypes." Personality and Individual Differences 41(7): 1205-1216.

O’Connor, K. P. (2006). "Behavioral Activity and Tic Disorder." Behavior Analyst Today 7(1): 19-31.O’Connor, K. P., Marchand, A., et al. (2006). La vie sans tranquillisants: Programme d'aide au succès du sevrage aux benzodiazépines. Québec, QC, Stanké.

O'Connor, K. P., Aardema, F., et al. (2006). "Cognitive Behaviour Therapy and Medication in the Treatment of Obsessive-Compulsive Disorder." Acta Psychiatrica Scandinavica 113(5): 408-419.

Radomsky, A. S., Ashbauch, A.R., O'Connor, K., et al. (2006). "Psychometric Properties of the French and English Versions of the Social Phobia Inventory." Canadian Journal of Behavioural Science 38(4): 354-360.
 
Radomsky, A. S., Ouimet, A.J., O'Connor, K., et al. (2006). "Psychometric Properties of the French and English Versions of Claustrophobia Questionnaire (CLQ)." Journal of Anxiety Disorders 20(6): 818-828.
 
Radomsky, A. S., Ouimet, A.J., O'Connor, K., et al. (2006). "Psychometric Properties of the French and English Versions of the Vancouver Obsessional-Compulsive Inventory and the Symmetry Ordering and Arranging Questionnaire." Cognitive Behavior Therapy 35(3): 164-173.