Tarjei Widding-Havneraas
Postdoctoral Fellow, University of Oslo & Visiting Scholar, University of California, Berkeley
Tarjei Widding-Havneraas
Postdoctoral Fellow, University of Oslo & Visiting Scholar, University of California, Berkeley
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Postdoctoral Fellow, University of Oslo & Visiting Scholar, University of California, Berkeley
I am a Postdoctoral Fellow at the Centre for Research on Equality in Education, University of Oslo, and affiliated with the SEGOP project. In 2026, I am a Visiting Scholar at University of California, Berkeley.
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.
I teach graduate level quantitative methods at the University of Oslo with lectures on causal inference using observational and experimental methods (MAE4054) and seminars on quantitative data analyses (RSNE4310).
Here you can find links to Google Scholar, my CV, and Bluesky.
Peer-reviewed publications
Peer-reviewed publications
(14) Wangqiong Ye, José M. A. Aleman, Trude Nilsen, Tarjei Widding-Havneraas. Will what helps now help later? The role of school spending in shaping academic resilience and future success for Norway's disadvantaged students. 2025. International Journal of Educational Research.
(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.
Awards
Awards
Peder Sather Center for Advanced Study Grant (2025)
University of California, Berkeley. Research project including stay for 2026Stipend for academic stay abroad, Faculty of Education, University of Oslo (2025)
University of California, Berkeley. Research stay for 2026LiNCon, Faculty of Education, University of Oslo (2025)
University of Wisconsin-Madison. Research stay 2025 (1 month)Research stay grant, The Western Norway Regional Health Authority (Helse Vest) (2019).
University of Wisconsin-Madison, 2021-2022 (6 months)PhD scholarship, The Western Norway Regional Health Authority (Helse Vest) (2018)
PhD
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
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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