selected scholarly activity
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conferences
- 1.56 Investigating Ethnic Disparities in Youth Mental Health Diagnoses Within a Large Canadian Community-Based Sample. Journal of the American Academy of Child and Adolescent Psychiatry. S159-S159. 2022
- 27.2 Examining the Psychometric Properties and Clinical Utility of the Toronto Obsessive-Compulsive Scale (TOCS) in a Pediatric Clinical Sample. Journal of the American Academy of Child and Adolescent Psychiatry. S202-S202. 2021
- NEUROIMAGING OF SUBCORTICAL BRAIN VOLUME ALTERATIONS IN PEADIATRIC AND ADULT OBSESSIVE-COMPULSIVE DISORDER: Preliminary findings from the ENIGMA Obsessive-Compulsive Disorder working group. European Neuropsychopharmacology. 617-619. 2017
- 928. Cortical Abnormalities Associated with Pediatric and Adult Obsessive-Compulsive Disorder: Findings from the Enigma Obsessive-Compulsive Disorder Working Group. Biological Psychiatry. S375-S376. 2017
- Common and Distinct White Matter Markers in Children with Attention-Deficit/Hyperactivity Disorder, Obsessive Compulsive Disorder and Autism Spectrum Disorder. Neuropsychopharmacology. S292-S293. 2015
- A Genome Wide Association Study of Hoarding Behaviours in a Community-Based Sample of Children and Adolescents. Biological Psychiatry. 87S-87S. 2015
- Proton Magnetic Resonance Spectroscopy of Orbital Frontal White Matter in Medication Naive Children with OCD. Journal of Obsessive-Compulsive and Related Disorders. 227-227. 2013
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journal articles
- Exploring latent clusters in pediatric OCD based on symptoms, severity, age, gender, and comorbidity. European Child and Adolescent Psychiatry. 33:3899-3912. 2024
- Large‐scale analysis of structural brain asymmetries during neurodevelopment: Associations with age and sex in 4265 children and adolescents. Human Brain Mapping. 45:e26754. 2024
- Neurocognitive effects of transcranial direct current stimulation in obsessive-compulsive disorder: a systematic review. International Journal of Neuroscience. ahead-of-print:1-14. 2024
- Racial/Ethnic Disparities in Psychiatric Traits and Diagnoses within a Community-based Sample of Children and Youth: Disparités raciales/ethniques dans les traits et diagnostics psychiatriques au sein d’un échantillon communautaire d’enfants et de jeunes. Canadian Journal of Psychiatry. 69:415-427. 2024
- Correction: White matter diffusion estimates in obsessive-compulsive disorder across 1653 individuals: machine learning findings from the ENIGMA OCD Working Group. Molecular Psychiatry. 29:1216-1216. 2024
- White matter diffusion estimates in obsessive-compulsive disorder across 1653 individuals: machine learning findings from the ENIGMA OCD Working Group. Molecular Psychiatry. 29:1063-1074. 2024
- The genetic architecture of youth anxiety: a study protocol. BMC Psychiatry. 24:159. 2024
- Delay discounting in individuals with anxiety and related disorders compared to healthy controls.. Canadian Journal of Behavioural Science. 2024
- Why Use Cannabis? Examining Motives for Cannabis Use in Individuals with Anxiety Disorders. Behaviour Change. 40:223-239. 2023
- In vivo versus imaginal: Comparing therapists’ willingness to engage in both forms of exposure therapy for repugnant obsessions. Current Psychology. 42:7837-7840. 2023
- Challenges of insight assessment in pediatric obsessive-compulsive disorder: Initial results and clinical considerations from a measure development study. Journal of Obsessive-Compulsive and Related Disorders. 36:100774-100774. 2023
- Falling into the OCD trap: Are clinicians hesitant to encourage exposure therapy for repugnant obsessions?. Journal of Obsessive-Compulsive and Related Disorders. 36:100766-100766. 2023
- Associations of medication with subcortical morphology across the lifespan in OCD: Results from the international ENIGMA Consortium. Journal of Affective Disorders. 318:204-216. 2022
- Does cannabis use impact cognitive behavioural therapy outcomes for anxiety and related disorders? A preliminary examination. Journal of Psychiatric Research. 156:690-697. 2022
- Obsessive‐compulsive disorder in children and youth: neurocognitive function in clinic and community samples. Journal of Child Psychology and Psychiatry. 63:881-889. 2022
- Characterizing problematic internet use in a sample of heavy drinking emerging adults.. Psychology of Addictive Behaviors. 36:307-317. 2022
- The thalamus and its subnuclei—a gateway to obsessive-compulsive disorder. Translational Psychiatry. 12:70. 2022
- An overview of the first 5 years of the ENIGMA obsessive–compulsive disorder working group: The power of worldwide collaboration. Human Brain Mapping. 43:23-36. 2022
- The Effects of a Single Transcranial Direct Current Stimulation Session on Impulsivity and Risk Among a Sample of Adult Recreational Cannabis Users. Frontiers in Human Neuroscience. 16:758285. 2022
- Clinical validation of the parent‐report Toronto Obsessive–Compulsive Scale (TOCS): A pediatric open‐source rating scale. JCPP Advances. 1:e12056. 2021
- Investigating executive functions in youth with OCD and hoarding symptoms. Bulletin of the Menninger Clinic. 85:335-357. 2021
- Exposure to stressful and traumatic life events in hoarding: Comparison to clinical controls. Journal of Clinical Psychology. 77:2216-2227. 2021
- LIVES for families psychological first aid training programme to address COVID-19 psychological distress: A mixed methods acceptability and feasibility protocol. BMJ Open. 11:e049995-e049995. 2021
- White matter microstructure and its relation to clinical features of obsessive–compulsive disorder: findings from the ENIGMA OCD Working Group. Translational Psychiatry. 11:173. 2021
- Genome-wide association study of pediatric obsessive-compulsive traits: shared genetic risk between traits and disorder. Translational Psychiatry. 11:91. 2021
- Virtual Histology of Cortical Thickness and Shared Neurobiology in 6 Psychiatric Disorders. JAMA psychiatry. 78:47-47. 2021
- Obsessive-compulsive disorder and attention-deficit/hyperactivity disorder: distinct associations with DNA methylation and genetic variation. Journal of Neurodevelopmental Disorders. 12:23. 2020
- Structural neuroimaging biomarkers for obsessive-compulsive disorder in the ENIGMA-OCD consortium: medication matters. Translational Psychiatry. 10:342. 2020
- The gut microbiome and inflammation in obsessive‐compulsive disorder patients compared to age‐ and sex‐matched controls: a pilot study. Acta Psychiatrica Scandinavica. 142:337-347. 2020
- Phenomenology of childhood hoarding. Children Australia. 45:138-144. 2020
- Subcortical Brain Volume, Regional Cortical Thickness, and Cortical Surface Area Across Disorders: Findings From the ENIGMA ADHD, ASD, and OCD Working Groups. American Journal of Psychiatry. 177:834-843. 2020
- Mapping Cortical and Subcortical Asymmetry in Obsessive-Compulsive Disorder: Findings From the ENIGMA Consortium. Biological Psychiatry. 87:1022-1034. 2020
- Corrigendum. Brain. 143:e44-e44. 2020
- Outcome of CBT for Problematic Hoarding in a Naturalistic Setting: Impact on Symptoms and Distress Tolerance. Behaviour Change. 37:13-21. 2020
- OUP accepted manuscript. Brain. 143:684-700. 2020
- Higher prevalence of irritable bowel syndrome and greater gastrointestinal symptoms in obsessive-compulsive disorder. Journal of Psychiatric Research. 118:1-6. 2019
- Hoarding: A meta‐analysis of age of onset. Depression and Anxiety. 36:552-564. 2019
- Seasonality Patterns of Internet Searches on Mental Health: Exploratory Infodemiology Study. JMIR Mental Health. 6:e12974-e12974. 2019
- 2014 Ontario Child Health Study Findings: Policy Implications for Canada. Canadian Journal of Psychiatry. 64:227-231. 2019
- Changes in the Prevalence of Child and Youth Mental Disorders and Perceived Need for Professional Help between 1983 and 2014: Evidence from the Ontario Child Health Study. Canadian Journal of Psychiatry. 64:256-264. 2019
- Children’s Mental Health Need and Expenditures in Ontario: Findings from the 2014 Ontario Child Health Study. Canadian Journal of Psychiatry. 64:275-284. 2019
- Poverty, Neighbourhood Antisocial Behaviour, and Children’s Mental Health Problems: Findings from the 2014 Ontario Child Health Study. Canadian Journal of Psychiatry. 64:285-293. 2019
- Prevalence and Correlates of Youth Suicidal Ideation and Attempts: Evidence from the 2014 Ontario Child Health Study. Canadian Journal of Psychiatry. 64:265-274. 2019
- Six-Month Prevalence of Mental Disorders and Service Contacts among Children and Youth in Ontario: Evidence from the 2014 Ontario Child Health Study. Canadian Journal of Psychiatry. 64:246-255. 2019
- The 2014 Ontario Child Health Study—Methodology. Canadian Journal of Psychiatry. 64:237-245. 2019
- Tracking Children’s Mental Health in the 21st Century: Lessons from the 2014 OCHS. Canadian Journal of Psychiatry. 64:232-236. 2019
- Psychometric Evaluation of a Revised Scoring Approach for the Children’s Saving Inventory in a Canadian Sample of Youth With Obsessive–Compulsive Disorder. Child Psychiatry and Human Development. 49:966-973. 2018
- Seasonality Patterns of Internet Searches on Mental Health: Exploratory Infodemiology Study (Preprint) 2018
- Symptom Insight in Pediatric Obsessive-Compulsive Disorder: Outcomes of an International Aggregated Cross-Sectional Sample. Journal of the American Academy of Child and Adolescent Psychiatry. 57:615-619.e5. 2018
- Cortical Abnormalities Associated With Pediatric and Adult Obsessive-Compulsive Disorder: Findings From the ENIGMA Obsessive-Compulsive Disorder Working Group. American Journal of Psychiatry. 175:453-462. 2018
- An Empirical Comparison of Meta- and Mega-Analysis With Data From the ENIGMA Obsessive-Compulsive Disorder Working Group. Frontiers in Neuroinformatics. 12:102. 2018
- Distinct Subcortical Volume Alterations in Pediatric and Adult OCD: A Worldwide Meta-and Mega-Analysis (vol , pg , 2016). American Journal of Psychiatry. 174:190-190. 2017
- Distinct Subcortical Volume Alterations in Pediatric and Adult OCD: A Worldwide Meta- and Mega-Analysis. American Journal of Psychiatry. 174:60-69. 2017
- A Diffusion Tensor Imaging Study in Children With ADHD, Autism Spectrum Disorder, OCD, and Matched Controls: Distinct and Non-Distinct White Matter Disruption and Dimensional Brain-Behavior Relationships. American Journal of Psychiatry. 173:1213-1222. 2016
- A Diffusion Tensor Imaging Study in Children With ADHD, Autism Spectrum Disorder, OCD, and Matched Controls: Distinct and Non-Distinct White Matter Disruption and Dimensional Brain-Behavior Relationships. American Journal of Psychiatry. 173:1213-1222. 2016
- Uncovering obsessive-compulsive disorder risk genes in a pediatric cohort by high-resolution analysis of copy number variation. Journal of Neurodevelopmental Disorders. 8:36. 2016
- Standards of care for obsessive–compulsive disorder centres. International Journal of Psychiatry in Clinical Practice. 20:204-208. 2016
- Who gets better when? An investigation of change patterns in group cognitive behavioral therapy for obsessive-compulsive disorder. Journal of Obsessive-Compulsive and Related Disorders. 10:35-41. 2016
- The cost and impact of compulsivity: A research perspective. European Neuropsychopharmacology. 26:800-809. 2016
- Clinical Correlates of Hoarding With and Without Comorbid Obsessive-Compulsive Symptoms in a Community Pediatric Sample. Journal of the American Academy of Child and Adolescent Psychiatry. 55:114-121.e2. 2016
- Examining and Comparing Social Perception Abilities Across Childhood-Onset Neurodevelopmental Disorders. Journal of the American Academy of Child and Adolescent Psychiatry. 54:479-486.e1. 2015
- Frontal EEG alpha activity and obsessive-compulsive behaviors in non-clinical young adults: a pilot study. Frontiers in Psychology. 6:1480. 2015
- Next Generation Sequencing and the Child and Youth Psychiatrist.. Journal of the Canadian Academy of Child and Adolescent Psychiatry. 24:83. 2015
- Three Reasons why Studying Hoarding in Children and Adolescents is Important.. Journal of the Canadian Academy of Child and Adolescent Psychiatry. 24:128-130. 2015
- A preliminary study of functional connectivity of medication naïve children with obsessive–compulsive disorder. Progress in Neuro-Psychopharmacology and Biological Psychiatry. 53:129-136. 2014
- A preliminary study on the effects of acute ethanol ingestion on default mode network and temporal fractal properties of the brain. Magnetic Resonance Materials in Physics, Biology, and Medicine. 27:291-301. 2014
- Disruption of the ASTN2/TRIM32 locus at 9q33.1 is a risk factor in males for autism spectrum disorders, ADHD and other neurodevelopmental phenotypes. Human Molecular Genetics. 23:2752-2768. 2014
- Dimensions of Perfectionism in Children and Adolescents with Obsessive-compulsive Disorder.. Journal of the Canadian Academy of Child and Adolescent Psychiatry. 23:136-143. 2014
- Proton magnetic resonance spectroscopy of prefrontal white matter in psychotropic naïve children and adolescents with obsessive–compulsive disorder. Psychiatry Research. 222:67-74. 2014
- Metabolite measurements in the caudate nucleus, anterior cingulate cortex and hippocampus among patients with mitochondrial disorders: a case-control study using proton magnetic resonance spectroscopy. CMAJ open. 1:E48-E55. 2013
- Interindividual, repositioning, and time‐of‐day effects on single voxel proton MR spectroscopy of the anterior cingulate cortex. Journal of Magnetic Resonance Imaging. 32:276-282. 2010
- Stop Signal and Conners’ Continuous Performance Tasks. Journal of Attention Disorders. 13:137-143. 2009
- Hippocampal metabolic abnormalities at first onset and with recurrent episodes of a major depressive disorder: A proton magnetic resonance spectroscopy study. NeuroImage. 47:36-41. 2009
- Commentary on Compulsive hoarding associated with abortion.. Journal of the Canadian Academy of Child and Adolescent Psychiatry. 16:179. 2007
- Intraindividual variability of striatal 1H-MRS brain metabolite measurements at 3 T. Magnetic Resonance Imaging. 24:187-194. 2006
- Beneficial Effects of Gonadotropin-Releasing Hormone Analogue Treatment on Positive and Negative Symptoms of Schizophrenia. Journal of Clinical Psychiatry. 65:1020-1021. 2004
- Depression and suicidal behavior in adolescent inpatients with obsessive compulsive disorder. Journal of Affective Disorders. 75:181-189. 2003
- Evidence for the involvement of the hippocampus in the pathophysiology of schizophrenia. European Neuropsychopharmacology. 10:389-395. 2000
- Decreased platelet peripheral-type benzodiazepine receptors in adolescent inpatients with repeated suicide attempts. Biological Psychiatry. 46:484-488. 1999
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preprints
- Racial/Ethnic Disparities in Youth Mental Health Traits and Diagnoses within a Community-based Sample 2023
- White Matter Microstructure and its Relation to Clinical Features of Obsessive-Compulsive Disorder: Findings from the ENIGMA OCD Working Group 2019
- Genome-wide Association Study of Pediatric Obsessive-Compulsive Traits: Shared Genetic Risk between Traits and Disorder 2019