Tarjei Widding-Havneraas
Postdoctoral Fellow, University of Oslo
Tarjei Widding-Havneraas
Postdoctoral Fellow, University of Oslo
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Postdoctoral Fellow, University of Oslo
I am a Postdoctoral Fellow at the Centre for Research on Equality in Education, University of Oslo, and affiliated with the EQOP-project.
I am a epidemiologist and sociologist interested in health, education, and the labor market. My work uses methods for causal inference combined with administrative data, genotyped data, and survey data.
I hold a PhD in Epidemiology, MPhil in Sociology, and BA in Economics from the University of Bergen, and I have been a visiting scholar at University of Wisconsin-Madison.
Here you can find links to Google Scholar, my CV, and Bluesky.
Peer-reviewed publications
(13) Ashmita Chaulagain, Tarjei Widding-Havneraas, Ingvild Lyhmann, Anne Halmøy, Ingvar Bjelland, Arnstein Mykletun. Lifetime contacts with child welfare services among children with ADHD: a population-based study. 2025. Child Psychiatry & Human Development.
(12) Ingvild Lyhmann, Tarjei Widding-Havneraas, Ingvar Bjelland, Simen Markussen, Felix Elwert, Ashmita Chaulagain, Arnstein Mykletun, Anne Halmøy. Effect of pharmacological treatment of attention-deficit/hyperactivity disorder on later psychiatric comorbidity: a population-based prospective long-term study. 2024. BMJ Mental Health.
(11) Tarjei Widding-Havneraas, Felix Elwert, Simen Markussen, Henrik Daae Zachrisson, Ingvild Lyhmann, Ashmita Chaulagain, Ingvar Bjelland, Anne Halmøy, Knut Rypdal, Arnstein Mykletun. Effect of ADHD medication on risk of injuries: a preference-based instrumental variable analysis. 2023. European Child & Adolescent Psychiatry.
(10) Ashmita Chaulagain, Ingvild Lyhmann, Anne Halmøy, Tarjei Widding-Havneraas, Olav Nyttingnes, Ingvar Bjelland, Arnstein Mykletun. A systematic meta-review of systematic reviews on attention deficit hyperactivity disorder. 2023. European Psychiatry.
(9) Tarjei Widding-Havneraas, Henrik Daae Zachrisson, Simen Markussen, Felix Elwert, Ingvild Lyhmann, Ashmita Chaulagain, Anne Halmøy, Ingvar Bjelland, Knut Rypdal, Arnstein Mykletun. Effect of Pharmacological Treatment of Attention-Deficit Hyperactivity Disorder on Criminality. 2023. Journal of the American Academy of Child & Adolescent Psychiatry.
➡️ Editorial: Mark A. Stein, Margaret H. Sibley, Jeffrey H. Newcorn. Editorial: Attention-Deficit/Hyperactivity Disorder, Stimulant Medication, and Criminality: Commentary and Caution. 2023. Journal of the American Academy of Child & Adolescent Psychiatry.
➡️ Press release: Does Pharmacological Treatment of ADHD Reduce Criminality?
(8) Ingvild Lyhmann, Tarjei Widding-Havneraas, Henrik Daae Zachrisson, Ingvar Bjelland, Ashmita Chaulagain, Arnstein Mykletun, Anne Halmøy. Variation in attitudes toward diagnosis and medication of ADHD: a survey among clinicians in the Norwegian child and adolescent mental health services. 2022. European Child & Adolescent Psychiatry.
(7) Tarjei Widding-Havneraas & Henrik Daae Zachrisson. A Gentle Introduction to Instrumental Variables. 2022. Journal of Clinical Epidemiology.
(6) Tarjei Widding-Havneraas, Simen Markussen, Felix Elwert, Ingvild Lyhmann, Ingvar Bjelland, Anne Halmøy, Ashmita Chaulagain, Eivind Ystrøm, Arnstein Mykletun, Henrik Daae Zachrisson. Geographical variation in ADHD: do diagnoses reflect symptom levels? 2022. European Child & Adolescent Psychiatry.
(5) Tarjei Widding-Havneraas, Ashmita Chaulagain, Ingvild Lyhmann, Henrik Daae Zachrisson, Felix Elwert, Simen Markussen, David McDaid, Arnstein Mykletun. Preference-based instrumental variables in health research rely on important and underreported assumptions: a systematic review. 2021. Journal of Clinical Epidemiology.
(4) Arnstein Mykletun, Tarjei Widding-Havneraas, Ashmita Chaulagain, Ingvild Lyhmann, Ingvar Bjelland, Anne Halmøy, Felix Elwert, Peter Butterworth, Simen Markussen, Henrik Daae Zachrisson, Knut Rypdal. Causal modeling of variation in clinical practice and long-term outcomes of ADHD using Norwegian registry data: the ADHD controversy project. 2021. BMJ Open.
(3) Tarjei Widding-Havneraas & Siri Hansen Pedersen. The role of welfare regimes in the relationship between childhood economic stress and adult health: a multilevel study of 20 European countries. 2020. SSM - Population Health.
(2) Beate Brinchmann, Tarjei Widding-Havneraas, Matthew Modini, Miles Rinaldi, Cathrine F. Moe, A-La Park, Eoin Killackey, Samuel B. Harvey, Arnstein Mykletun. A meta-regression of the impact of policy on the efficacy of Individual Placement and Support. 2019. Acta Scandinavica Psychiatrica.
(1) Tarjei Widding-Havneraas. Young adults not in employment, education or training: a register-based study, 1993–2009. 2016. Norwegian Journal of Working Life Studies.
PhD
Effect of ADHD Medication on Criminality and Injuries
Quasi-Experimental Evidence for Patients on the Margin of Treatment
My PhD examined the effects of ADHD medication on criminality and injuries using preference-based instrumental variables and the extent to which ADHD symptoms, diagnosis, and medication vary geographically. The PhD is available to read and download here, and a Norwegian press release summary can be read here.
Other publications
Statistical theory and causality in methods training [Comment]. 2018. sosiologen.no.
Beyond genes and environment [Book review: Conley, D. & Fletcher, J. The Genome Factor: What the Social Genomics Revolution Reveals about Ourselves, Our History, and the Future. Princeton University Press]. 2017. sosiologen.no.
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