Alexandra Havdahl

Image of Alexandra Havdahl
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Visiting address Forskningsveien 3A Harald Schjelderups hus 0373 Oslo
Postal address Postboks 1094 Blindern 0317 Oslo

Academic interests

I am an Associate Professor at the University of Oslo Department of Psychology and member of the PROMENTA research centre. I lead the Psychiatric Genetic Epidemiology (PaGE) group at Nic Waals Institute of Lovisenberg Diaconal Hospital and the psychiatric genetics (PsychGen) group at the Norwegian Institute of Public Health in Oslo. At the MRC Integrative Epidemiology Unit at the University of Bristol I am an Honorary Research Fellow.

My research group has three primary aims:

  1. Elucidating when and how genetic risk for mental disorder manifests in signs and symptoms from birth to adulthood
  2. Distinguishing genetic and environmental pathways of within-family transmission of mental disorders
  3. Identifying causal environmental risk and protective factors for mental disorders

We utilize prospective and longitudinal pregnancy cohorts such as the Norwegian Mother, Father and Child Cohort Study (MoBa) and the Avon Longitudinal Study of Parents and Children (ALSPAC). Our approaches include structural equation modelling, polygenic scoring, Mendelian randomization, negative control comparison, and diverse family designs.

I am involved in several international research collaborations, including the Psychiatric Genomics Consortium (PGC), the Childhood and Adolescence Psychopathology: unravelling the complex etiology by a large Interdisciplinary Collaboration in Europe (CAPICE), and the EArly Genetics and Lifecourse Epidemiology (EAGLE) Consortium.

Another line of research that I am strongly engaged in aims to improve early identification, assessment tools, and interventions for individuals with autism and other neurodevelopmental conditions. I am a member of the Lancet Commission on the Future of Care and Clinical Research in Autism and a lead trainer in the national network for clinician training in the use of autism diagnostic assessment tools.

Background

Education

  • 2016: PhD. Department of Psychology, University of Oslo

  • 2011: Cand. Psychol. (6-year clinical psychologist degree), University of Oslo, accredited psychologist 2011

Employment history

  • 2019 -current: Associate Professor (20%), Dept of Psychology, UO

  • 2018 -current: Research group leader (80%), head of the Psychiatric Genetic Epidemiology group, Nic Waals Institute, Lovisenberg Diaconal Hospital

  • 2018 -current: Researcher and co-PI of the psychiatric genetics (PsychGen) group (20%), Dept. of Mental Disorders, Norwegian Institute of Public Health (NIPH)

  • 2016-2018: Senior Research Associate (100%, permanent), MRC Integrative Epidemiology Unit, University of Bristol, UK

  • 2013-2016: PhD Fellow, Nic Waals Institute, Lovisenberg, Norway

  • 2013-2015: Visiting PhD Researcher (100%), Center for Autism and the Developing Brain, Weill Medical College, Cornell University, New York, USA

  • 2011-2012: Clinical Psychologist (100%) in the Autism Birth Cohort Study (ABC) nested in the Norwegian Mother, Father and Child Cohort, Nic Waals Institute, Lovisenberg

  • 2007-2011: Research Assistant (20%), ABC Study, Nic Waals Institute, Lovisenberg

Awards

  • 2020: Career grant from the South-Eastern Norway Regional Health Authority

  • 2019: Best paper of 2019 award from Lovisenberg Diaconal Hospital

  • 2018: Exchange fellowship for 1-year research stay at the University of Bristol. The South-Eastern Norway Regional Health Authority

  • 2016: Award for best clinical PhD dissertation from the International Society for Autism Research

  • 2012: Exchange fellowship for 1-year research stay at Cornell University. The South-Eastern Norway Regional Health Authority

  • 2012: PhD fellowship. The South-Eastern Norway Regional Health Authority

Organization of International Conferences

  • 2018: Established and organized the Norwegian and British population cohorts meeting 2018 (35 speakers) at the University of Bristol, UK

Tags: Developmental psychology, genetics, Psychopathology

Publications

  • Howe, Laurence J.; Nivard, Michel G.; Morris, Tim T.; Hansen, Ailin Falkmo; Rasheed, Humaira & Cho, Yoonsu [Show all 106 contributors for this article] (2022). Within-sibship genome-wide association analyses decrease bias in estimates of direct genetic effects. Nature Genetics. ISSN 1061-4036. 54(5), p. 581–592. doi: 10.1038/s41588-022-01062-7. Full text in Research Archive
  • Havdahl, Alexandra; Wootton, Robyn E; Leppert, Beate; Riglin, Lucy; Ask, Helga & Tesli, Martin Steen [Show all 16 contributors for this article] (2022). Associations between Pregnancy-Related Predisposing Factors for Offspring Neurodevelopmental Conditions and Parental Genetic Liability to Attention-Deficit/Hyperactivity Disorder, Autism, and Schizophrenia: The Norwegian Mother, Father and Child Cohort Study (MoBa). JAMA psychiatry. ISSN 2168-6238. doi: 10.1001/jamapsychiatry.2022.1728.
  • Isungset, Martin Arstad; Conley, Dalton C; Zachrisson, Henrik Daae; Ystrøm, Eivind; Havdahl, Alexandra & Njølstad, Pål Rasmus [Show all 7 contributors for this article] (2022). Social and genetic associations with educational performance in a Scandinavian welfare state. Proceedings of the National Academy of Sciences of the United States of America. ISSN 0027-8424. 119(25). doi: 10.1073/pnas.2201869119.
  • Magnus, Maria Christine; Havdahl, Alexandra; Wilcox, Allen J. & Goisis, Alice (2022). Parental fecundability and neurodevelopmental delays and difficulties in offspring. International Journal of Epidemiology. ISSN 0300-5771. p. 1–11. doi: 10.1093/ije/dyac094.
  • Jami, Eshim S.; Hammerschlag, Anke R.; Ip, Hill F.; Allegrini, Andrea G.; Benyamin, Beben & Border, Richard [Show all 94 contributors for this article] (2022). Genome-wide association meta-analysis of childhood and adolescent internalizing symptoms. Journal of the American Academy of Child and Adolescent Psychiatry. ISSN 0890-8567. p. 1–12. doi: 10.1016/j.jaac.2021.11.035. Full text in Research Archive
  • Caramaschi, Doretta; Neumann, Alexander; Cardenas, Andres; Tindula, Gwen; Alemany, Silvia & Zillich, Lea [Show all 40 contributors for this article] (2022). Meta-analysis of epigenome-wide associations between DNA methylation at birth and childhood cognitive skills. Molecular Psychiatry. ISSN 1359-4184. doi: 10.1038/s41380-022-01441-w.
  • Torvik, Fartein Ask; Eilertsen, Espen Moen; Hannigan, Laurie J.; Cheesman, Rosa Catherine Gillespie; Howe, Laurence J. & Magnus, Per Minor [Show all 11 contributors for this article] (2022). Modeling assortative mating and genetic similarities between partners, siblings, and in-laws. Nature Communications. ISSN 2041-1723. 13(1), p. 1–10. doi: 10.1038/s41467-022-28774-y. Full text in Research Archive
  • Dack, Kyle; Fell, Matthew; Taylor, Caroline M.; Havdahl, Alexandra & Lewis, Sarah J. (2022). Prenatal Mercury Exposure and Neurodevelopment up to the Age of 5 Years: A Systematic Review. International Journal of Environmental Research and Public Health. 19(4), p. 1–25. doi: 10.3390/ijerph19041976. Full text in Research Archive
  • Watson, H; et, al.; Andreassen, Ole; Ask, Helga; et, al. & Havdahl, Alexandra [Show all 7 contributors for this article] (2021). Common Genetic Variation And Age at Onset Of Anorexia Nervosa. biological psychiatry: global open science. ISSN 2667-1743.
  • Ask, Helga; Eilertsen, Espen Moen; Gjerde, Line Cecilie; Hannigan, Laurie John; Gustavson, Kristin & Havdahl, Alexandra [Show all 12 contributors for this article] (2021). Intergenerational transmission of parental neuroticism to emotional problems in 8-year-old children: Genetic and environmental influences. JCPP Advances. ISSN 2692-9384. 1(4). doi: 10.1002/jcv2.12054. Full text in Research Archive
  • Haan, Elis; Sallis, Hannah M.; Zuccolo, Luisa; Labrecque, Jeremy; Ystrøm, Eivind & Reichborn-Kjennerud, Ted [Show all 9 contributors for this article] (2021). Prenatal smoking, alcohol and caffeine exposure and maternal-reported attention deficit hyperactivity disorder symptoms in childhood: triangulation of evidence using negative control and polygenic risk score analyses. Addiction. ISSN 0965-2140. 117(5), p. 1458–1471. doi: 10.1111/add.15746. Full text in Research Archive
  • Lord, Catherine; Charman, Tony; Havdahl, Alexandra; Carbone, Paul; Anagnostou, Evdokia & Boyd, Brian [Show all 32 contributors for this article] (2021). The Lancet Commission on the future of care and clinical research in autism. The Lancet. ISSN 0140-6736. 399, p. 271–334. doi: 10.1016/S0140-6736%2821%2901541-5. Full text in Research Archive
  • Ip, Hill F.; van der Laan, Camiel M.; Krapohl, Eva M. L.; Brikell, Isabell; Sánchez-Mora, Cristina & Nolte, Ilja M. [Show all 50 contributors for this article] (2021). Genetic association study of childhood aggression across raters, instruments, and age. Translational Psychiatry. ISSN 2158-3188. 11, p. 1–9. doi: 10.1038/s41398-021-01480-x. Full text in Research Archive
  • Askeland, Ragna Bugge; Hannigan, Laurie J.; Ask, Helga; Ayorech, Ziada; Tesli, Martin Steen & Corfield, Elizabeth [Show all 12 contributors for this article] (2021). Early manifestations of genetic risk for neurodevelopmental disorders. Journal of Child Psychology and Psychiatry. ISSN 0021-9630. p. 1–10. doi: 10.1111/jcpp.13528. Full text in Research Archive
  • Haan, E; Sallis, H; Ystrøm, Eivind; Njølstad, Pål Rasmus; Andreassen, Ole & Reichborn-Kjennerud, Ted [Show all 9 contributors for this article] (2021). Maternal and offspring genetic risk score analyses of fetal alcohol exposure and attention-deficit hyperactivity disorder risk in offspring. Alcoholism: Clinical and Experimental Research. ISSN 0145-6008. 45(10), p. 2090–2102. doi: 10.1111/acer.14692. Full text in Research Archive
  • Friel, Catherine; Leyland, Alastair H.; Anderson, Jana J.; Havdahl, Alexandra; Borge, Tiril Cecilie & Shimonovich, Michal [Show all 7 contributors for this article] (2021). Prenatal vitamins and the risk of offspring autism spectrum disorder: Systematic review and meta-analysis. Nutrients. ISSN 2072-6643. 13. doi: 10.3390/nu13082558. Full text in Research Archive
  • Peyre, Hugo; Schoeler, Tabea; Liu, Chaoyu; Williams, Camille Michèle; Hoertel, Nicolas & Havdahl, Alexandra [Show all 7 contributors for this article] (2021). Combining multivariate genomic approaches to elucidate the comorbidity between autism spectrum disorder and attention deficit hyperactivity disorder. Journal of Child Psychology and Psychiatry. ISSN 0021-9630. 62(11), p. 1285–1296. doi: 10.1111/jcpp.13479.
  • Dack, Kyle; Fell, Matthew; Taylor, Caroline M.; Havdahl, Alexandra Karoline Saasen & Lewis, Sarah J. (2021). Mercury and prenatal growth: A systematic review. International Journal of Environmental Research and Public Health (IJERPH). ISSN 1661-7827. 18:7140(13), p. 1–19. doi: 10.3390/ijerph18137140. Full text in Research Archive
  • Magnus, Maria Christine; Havdahl, Alexandra; Morken, Nils-Halvdan; Wensaas, Knut-Arne; Wilcox, Allen J. & Håberg, Siri Eldevik (2021). Risk of miscarriage in women with psychiatric disorders. British Journal of Psychiatry. ISSN 0007-1250. 219(3), p. 501–506. doi: 10.1192/bjp.2020.259. Full text in Research Archive
  • Havdahl, Alexandra; Niarchou, Maria; Starnawska, A; Uddin, M; van der Merwe, Celia & Warrier, Varun (2021). Genetic contributions to autism spectrum disorder. Psychological Medicine. ISSN 0033-2917. 51(13), p. 2260–2273. doi: 10.1017/S0033291721000192. Full text in Research Archive
  • Eilertsen, Espen Moen; Jami, Eshim Shahid; McAdams, Tom A.; Hannigan, Laurie J.; Havdahl, Alexandra & Magnus, Per [Show all 8 contributors for this article] (2021). Direct and Indirect Effects of Maternal, Paternal, and Offspring Genotypes: Trio-GCTA. Behavior Genetics. ISSN 0001-8244. 51, p. 154–161. doi: 10.1007/s10519-020-10036-6. Full text in Research Archive
  • Hannigan, Laurie John; Askeland, Ragna Bugge; Ask, Helga; Tesli, Martin; Corfield, Elizabeth & Ayorech, Ziada [Show all 15 contributors for this article] (2021). Genetic Liability for Schizophrenia and Childhood Psychopathology in the General Population. Schizophrenia Bulletin. ISSN 0586-7614. 47(4), p. 1179–1189. doi: 10.1093/schbul/sbaa193. Full text in Research Archive
  • Sallis, Hannah M.; Croft, Jazz; Havdahl, Alexandra; Jones, Hannah J.; Dunn, Erin C. & Smith, George Davey [Show all 8 contributors for this article] (2020). Genetic liability to schizophrenia is associated with exposure to traumatic events in childhood. Psychological Medicine. ISSN 0033-2917. doi: 10.1017/S0033291720000537.
  • Havdahl, Alexandra; Farmer, Cristan; Schjølberg, Synnve; Øyen, Anne-Siri; Suren, Pål & Reichborn-Kjennerud, Ted [Show all 15 contributors for this article] (2020). Age of walking and intellectual ability in autism spectrum disorder and other neurodevelopmental disorders: a population‐based study. Journal of Child Psychology and Psychiatry. ISSN 0021-9630. p. 1–9. doi: 10.1111/jcpp.13369. Full text in Research Archive
  • Kiselev, Yury; Handal, Marte; Hjellvik, Vidar; Reichborn-Kjennerud, Ted; Stoltenberg, Camilla & Suren, Pål [Show all 8 contributors for this article] (2020). Nationwide study of neuropsychiatric comorbidity and medicines use in children with autism spectrum disorder in Norway. Frontiers in Psychiatry. ISSN 1664-0640. 11, p. 1–8. doi: 10.3389/fpsyt.2020.596032.
  • Cheesman, Rosa; Eilertsen, Espen Moen; Ahmadzadeh, Yasmin I.; Gjerde, Line C.; Hannigan, Laurie John & Havdahl, Alexandra [Show all 13 contributors for this article] (2020). How important are parents in the development of child anxiety and depression? A genomic analysis of parent-offspring trios in the Norwegian Mother Father and Child Cohort Study (MoBa). BMC Medicine. ISSN 1741-7015. 18. doi: 10.1186/s12916-020-01760-1. Full text in Research Archive
  • Akingbuwa, Wonuola A.; Hammerschlag, Anke R.; Jami, Eshim S.; Allegrini, Andrea G.; Karhunen, Ville & Sallis, Hannah [Show all 35 contributors for this article] (2020). Genetic Associations Between Childhood Psychopathology and Adult Depression and Associated Traits in 42 998 Individuals: A Meta-analysis. JAMA psychiatry. ISSN 2168-6238. 77(7), p. 715–728. doi: 10.1001/jamapsychiatry.2020.0527. Full text in Research Archive
  • Brumpton, Ben Michael; Sanderson, Eleanor; Heilbron, Karl; Hartwig, FP; Harrison, S & Vie, Gunnhild Åberge [Show all 35 contributors for this article] (2020). Avoiding dynastic, assortative mating, and population stratification biases in Mendelian randomization through within-family analyses. Nature Communications. ISSN 2041-1723. 11. doi: 10.1038/s41467-020-17117-4. Full text in Research Archive
  • Torvik, Fartein Ask; Eilertsen, Espen Moen; McAdams, Tom A.; Gustavson, Kristin; Zachrisson, Henrik Daae & Brandlistuen, Ragnhild Eek [Show all 11 contributors for this article] (2020). Mechanisms linking parental educational attainment with child ADHD, depression, and academic problems: a study of extended families in The Norwegian Mother, Father and Child Cohort Study. Journal of Child Psychology and Psychiatry. ISSN 0021-9630. 61(9), p. 1009–1018. doi: 10.1111/jcpp.13197. Full text in Research Archive
  • Davies, Neil M.; Howe, Laurence; Brumpton, Ben Michael; Havdahl, Alexandra; Evans, David M. & Smith, George Davey (2019). Within family Mendelian randomization studies. Human Molecular Genetics. ISSN 0964-6906. 28(2), p. R170–R179. doi: 10.1093/hmg/ddz204. Full text in Research Archive
  • Suren, Pål; Havdahl, Alexandra; Øyen, Anne-Siri; Schjølberg, Synnve; Reichborn-Kjennerud, Ted & Magnus, Per [Show all 8 contributors for this article] (2019). Diagnosing autism spectrum disorder among children in Norway . Tidsskrift for Den norske legeforening. ISSN 0029-2001. 139(14), p. 1372–1379. doi: 10.4045/tidsskr.18.0960. Full text in Research Archive
  • Leppert, Beate; Havdahl, Alexandra; Riglin, Lucy; Jones, Hannah J.; Zheng, Jie & Davey Smith, George [Show all 10 contributors for this article] (2019). Association of maternal neurodevelopmental risk alleles with early-life exposures. JAMA psychiatry. ISSN 2168-6238. 76(8), p. 834–842. doi: 10.1001/jamapsychiatry.2019.0774. Full text in Research Archive
  • Suren, Pål; Havdahl, Alexandra; Bresnahan, Michaeline; Hirtz, Deborah; Hornig, Mady & Lord, Catherine [Show all 13 contributors for this article] (2019). Sensitivity and specificity of early screening for autism. BJPsych Open. ISSN 2056-4724. 5(3). doi: 10.1192/bjo.2019.34. Full text in Research Archive
  • Havdahl, Alexandra; Ruth, Mitchell; Lavinia, Paternoster & Davey Smith, George (2019). Investigating causality in the association between vitamin D status and self-reported tiredness. Scientific Reports. ISSN 2045-2322. 9. doi: 10.1038/s41598-019-39359-z. Full text in Research Archive
  • Caramaschi, Doretta; Taylor, Amy; Richmond, Rebecca C.; Havdahl, Alexandra; Golding, Jean & Relton, Caroline [Show all 9 contributors for this article] (2018). Maternal smoking during pregnancy and autism: using causal inference methods in a birth cohort study. Translational Psychiatry. ISSN 2158-3188. 8(262). doi: 10.1038/s41398-018-0313-5.
  • Ask, Helga; Gustavson, Kristin; Ystrøm, Eivind; Havdahl, Karoline Alexandra; Tesli, Martin Steen & Askeland, Ragna Bugge [Show all 7 contributors for this article] (2018). Association of Gestational Age at Birth With Symptoms of Attention-Deficit/Hyperactivity Disorder in Children. JAMA pediatrics. ISSN 2168-6203. 172(8), p. 749–756. doi: 10.1001/jamapediatrics.2018.1315. Full text in Research Archive
  • Øien, Roald A; Schjølberg, Synnve; Volkmar, Fred R.; Shic, Frederick; Cicchetti, Domenic V. & Nordahl-Hansen, Anders Johan [Show all 14 contributors for this article] (2018). Clinical Features of Children With Autism Who Passed 18-Month Screening. Pediatrics. ISSN 0031-4005. 141(6). doi: 10.1542/peds.2017-3596. Full text in Research Archive
  • Havdahl, Karoline Alexandra; Bishop, Somer L.; Surén, Pål; Øyen, Anne-Siri; Lord, Catherine & Pickles, Andrew [Show all 17 contributors for this article] (2017). The influence of parental concern on the utility of autism diagnostic instruments. Autism Research. ISSN 1939-3792. 10(10), p. 1672–1686. doi: 10.1002/aur.1817.
  • Bishop, Somer L.; Farmer, Cristan; Hus Bal, Vanessa; Robinson, Elise; Willsey, AJ & Werling, DM [Show all 9 contributors for this article] (2017). Identification of Developmental and Behavioral Markers Associated With Genetic Abnormalities in Autism Spectrum Disorder. American Journal of Psychiatry. ISSN 0002-953X. 174(6), p. 576–585. doi: 10.1176/appi.ajp.2017.16101115.

View all works in Cristin

  • Askelund, Adrian Dahl; Hegemann, Laura; Corfield, Elizabeth Claire; Ask, Helga; Ystrøm, Eivind & Havdahl, Alexandra [Show all 7 contributors for this article] (2022). The genomics of psychiatric symptom differentiation in early life.
  • Askeland, Ragna Bugge; Hannigan, Laurie John; O'Connell, Kevin Sean; Corfield, Elizabeth Claire; Frei, Oleksandr & Thapar, Anita [Show all 11 contributors for this article] (2022). Developmental manifestations of polygenic risk for bipolar disorder from infancy to middle childhood.
  • Hegemann, Laura; Askeland, Ragna Bugge; Elizabeth, Corfield C.; Askelund, Adrian Dahl; Hannigan, Laurie John & Havdahl, Alexandra (2022). Exploring shared genetic liability across early neurodevelopmental delays and atypicalities in the general population.
  • Wootton, Robyn E; Sallis, Hannah M.; martin, joanna; Dennison, Charlotte A.; Corfield, Elizabeth & Andreassen, Ole A [Show all 9 contributors for this article] (2022). Direct and indirect genetic effects of parental mental health on childhood emotional problems in the Norwegian Mother, Father and Child cohort study (MoBa).
  • Wootton, Robyn E; Chong, Amanda; Mahmoud, Osama; Munafò, Marcus R.; Tilling, Kate & Havdahl, Alexandra (2022). Exploring the Role of Smoking in Recovery from Major Depression: A Mendelian Randomisation Study.
  • Pettersen, Johanne Hagen; Hannigan, Laurie John; Eilertsen, Espen Moen; Gustavson, Kristin; Lund, Ingunn Olea & Jensen, Pia [Show all 10 contributors for this article] (2022). Indirect genetic influences on mental distress in mother-father-offspring trios during the covid-19 lockdown.
  • Eilertsen, Espen Moen; Gillespie Cheesman, Rosa Catherine; Ayorech, Ziada; Røysamb, Espen; Pingault, Jean-Baptiste & Njølstad, Pål Rasmus [Show all 11 contributors for this article] (2022). On the importance of parenting in externalizing disorders: an evaluation of indirect genetic effects in families. Journal of Child Psychology and Psychiatry. ISSN 0021-9630. 63(10), p. 1186–1195. doi: 10.1111/jcpp.13654.
  • Hannigan, Laurie John & Havdahl, Alexandra (2022). Editorial: Developmental Psychiatric Genetic Epidemiology: Where Are We, and What Challenges Do We Face Going Forward? Journal of the American Academy of Child and Adolescent Psychiatry. ISSN 0890-8567. 61(2), p. 125–127. doi: 10.1016/j.jaac.2021.05.014.
  • Kleppestø, Thomas Haarklau; Eilertsen, Espen Moen; van Bergen, Elsje; Zeitsch, Brendan; Sunde, Hans Fredrik & Nordmo, Magnus [Show all 10 contributors for this article] (2021). Intergenerational Transmission of ADHD: More Evidence for Heritability than Fast Life History. Behavior Genetics. ISSN 0001-8244. 51(6), p. 717–717.
  • Kleppestø, Thomas Haarklau; Eilertsen, Espen Moen; van Bergen, Elsje; Zeitsch, Brendan; Sunde, Hans Fredrik & Nordmo, Magnus [Show all 10 contributors for this article] (2021). Intergenerational Transmission of ADHD: More Evidence for Heritability than Fast Life History.
  • Barkhuizen, Wikus; Pingault, Jean-Baptiste; Wang, Biyao; Hannigan, Laurie John; Eilertsen, Espen Moen & Andreassen, Ole [Show all 14 contributors for this article] (2021). Direct and indirect genetic influences involved in the intergenerational transmission of risk for ADHD in the Norwegian Mother, Father and Child Cohort. Behavior Genetics. ISSN 0001-8244. 51(6), p. 692–691.
  • Ayorech, Ziada; Gillespie Cheesman, Rosa Catherine; Eilertsen, Espen Moen; Torvik, Fartein Ask; Andreassen, Ole & Havdahl, Alexandra [Show all 7 contributors for this article] (2021). Investigating Heterogeneity in Depression Using Multiple Polygenic Scores. European Neuropsychopharmacology. ISSN 0924-977X. 51, p. E161–E161.
  • Ayorech, Ziada; Gillespie Cheesman, Rosa Catherine; Eilertsen, Espen Moen; Havdahl, Alexandra & Ystrøm, Eivind (2021). Polygenic P: Characterising the role of general liability to psychopathology in maternal depression . Behavior Genetics. ISSN 0001-8244. 51(5), p. 690–690.
  • Hannigan, Laurie John; Corfield, Elizabeth; Biele, Guido; Tilling, Kate; McAdams, Tom A. & Badini, Isabella [Show all 19 contributors for this article] (2021). The genomic basis of participation in the Norwegian Mother, Father and Child Cohort Study.
  • Hannigan, Laurie John; Hegemann, Laura; Wootton, Robyn; Askelund, Adrian Dahl & Havdahl, Alexandra (2021). A framework to improve polygenic questions and strengthen inferences in psychiatric genetic epidemiology .
  • Wootton, Robyn; Dack, Kyle; Borges, Carolina; Pagoni, Panagiota; Riglin, Lucy & Andreassen, Ole [Show all 12 contributors for this article] (2021). Nutritional biomarkers in pregnancy and neurodevelopmental outcomes in offspring: A Mendelian Randomization study in the Norwegian Mother, Father and Child Cohort Study (MoBa).
  • Ayorech, Ziada; Gillespie Cheesman, Rosa Catherine; Eilertsen, Espen Moen; Torvik, Fartein Ask; Andreassen, Ole & Havdahl, Alexandra [Show all 7 contributors for this article] (2021). Investigating Heterogeneity in Depression Using Multiple Polygenic Scores.
  • Ayorech, Ziada; Davies, Neil; Wootton, Robyn; Watson, Hunna J; Hannigan, Laurie John & Askeland, Ragna Bugge [Show all 17 contributors for this article] (2021). Differential causal risk patterns in childhood eating behaviours compared to adulthood anorexia nervosa. A Mendelian randomization study.
  • Ayorech, Ziada; Gillespie Cheesman, Rosa Catherine; Eilertsen, Espen Moen; Havdahl, Alexandra & Ystrøm, Eivind (2021). Polygenic P: Characterising the role of general liability to psychopathology in maternal depression .
  • Hughes, Amanda; Morris, Tim; Ayorech, Ziada; Tesli, Martin Steen; Ask, Helga & Askeland, Ragna Bugge [Show all 16 contributors for this article] (2021). The causal effect of BMI on neurodevelopment: a within family Mendelian randomization study using MoBa. International Journal of Epidemiology. ISSN 0300-5771. 50(Suppl 1). doi: 10.1093/ije/dyab168.296. Full text in Research Archive
  • Havdahl, Alexandra (2021). Separating direct and indirect genetic effects using trio designs in the Norwegian Mother, Father and Child Cohort Study (MoBa).
  • Havdahl, Alexandra (2021). Prenatal nutrition and risk of offspring ADHD: A mendelian randomization study in the MoBa cohort.
  • Havdahl, Alexandra Karoline Saasen; Mitchell, Ruth; Paternoster, Lavinia & Smith, George Davey (2021). Author Correction: Investigating causality in the association between vitamin D status and self-reported tiredness. Scientific Reports. ISSN 2045-2322. 11. doi: 10.1038/s41598-021-89274-5.
  • Hannigan, Laurie John & Havdahl, Alexandra (2021). Meeting the challenge of multidimensionality in neurodevelopmental disorders – reflections on Johnson et al. (2021). Journal of Child Psychology and Psychiatry. ISSN 0021-9630. doi: 10.1111/jcpp.13416. Full text in Research Archive
  • Havdahl, Alexandra (2020). PaGE and PsychGen: The Psychiatric Genetic Epidemiology group.
  • Havdahl, Alexandra (2020). Update on psychiatric genetics research in the Norwegian Mother, Father and Child Cohort Study.
  • Havdahl, Alexandra (2020). Autism and autistic traits in the Norwegian Mother, Father and Child Cohort Study (MoBa).
  • Lennox, Ziada Ayorech; Davies, Neil; Hannigan, Laurie John; Askeland, Ragna Bugge; Tesli, Martin Steen & Andreassen, Ole Andreas [Show all 14 contributors for this article] (2020). Which Metabo-Psychiatric Factors Affect the Risk of Anorexia Nervosa? A Mendelian Randomization Study.
  • Havdahl, Alexandra; Niarchou, M; Starnawska, A & van der Merwe, Celia (2020). Genetic contributions to autism spectrum disorder.
  • Torvik, Fartein Ask; Eilertsen, Espen Moen; Hannigan, Laurie John; Havdahl, Alexandra & Ystrøm, Eivind (2020). Assortative mating and the usefulness of polygenic scores in extended pedigrees.
  • Askeland, Ragna Bugge; Hannigan, Laurie John; Ask, Helga; Lennox, Ziada Ayorech; Tesli, Martin Steen & Corfield, Elizabeth [Show all 9 contributors for this article] (2020). Genetic risk factors for neurodevelopmental disorders.
  • Gillespie Cheesman, Rosa Catherine; Eilertsen, Espen Moen; Ahmadzadeh, Yasmin; Gjerde, Line C.; Hannigan, Laurie & Havdahl, Alexandra [Show all 9 contributors for this article] (2019). Separating child and parent influences on child emotional problems using genomic family data. Behavior Genetics. ISSN 0001-8244. 49(6), p. 523–524. doi: 10.1007/s10519-019-09973-8.
  • Ask, Helga; Eilertsen, Espen Moen; Gjerde, Line C.; Gustavson, Kristin; Hannigan, Laurie John & Havdahl, Alexandra [Show all 11 contributors for this article] (2019). Intergenerational transmission of parental neuroticism to offspring neuroticism, depression, and anxiety . Behavior Genetics. ISSN 0001-8244. 49(6), p. 548–548. doi: 10.1007/s10519-019-09973-8.
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  • Gillespie Cheesman, Rosa Catherine; Eilertsen, Espen Moen; Ahmadzadeh, Yasmin; Gjerde, Line C.; Hannigan, Laurie & Havdahl, Alexandra [Show all 9 contributors for this article] (2019). Separating child and parent influences on child emotional problems using genomic family data.
  • Gillespie Cheesman, Rosa Catherine; Eilertsen, Espen Moen; Ahmadzadeh, Yasmin; Gjerde, Line C.; Hannigan, Laurie & Havdahl, Alexandra [Show all 9 contributors for this article] (2019). Separating child and parent influences on child depression and anxiety using genomic family data. European Neuropsychopharmacology. ISSN 0924-977X. 29, p. S119–S119. doi: 10.1016/j.euroneuro.2019.08.012.
  • Gillespie Cheesman, Rosa Catherine; Eilertsen, Espen Moen; Ahmadzadeh, Yasmin; Gjerde, Line C.; Hannigan, Laurie & Havdahl, Alexandra [Show all 9 contributors for this article] (2019). Separating child and parent influences on child depression and anxiety using genomic family data.
  • Havdahl, Alexandra (2019). Using population-based cohort studies and nationwide registries to study autism and other neurodevelopmental disorders.
  • Havdahl, Alexandra (2019). Autism in Norway.
  • Tesli, Martin Steen; Corfield, Elizabeth; Zayats, Tetyana; Ask, Helga; Askeland, Ragna Bugge & Hannigan, Laurie [Show all 10 contributors for this article] (2019). Investigation of shared genetic risk between cardiometabolic morbidity and ADHD in a Norwegian family cohort using polygenic transmission disequilibrium test.
  • Hannigan, Laurie; Askeland, Ragna Bugge; Ask, Helga; Tesli, Martin Steen; Corfield, Elizabeth & Mcadams, Tom [Show all 10 contributors for this article] (2019). Perinatal maternal stress and early-life behavioural and emotional problems: examining the role of genetically-influenced environmental sensitivity in mothers and offspring.
  • Ask, Helga; Hannigan, Laurie; Davies, Neil; Gustavson, Kristin; Biele, Guido & Richardson, Thomas [Show all 15 contributors for this article] (2019). Exploring the Associations Between Health-Related Polygenic Scores and Participation in the Norwegian Mother and Child Pregnancy Cohort (MoBa).
  • Ask, Helga; Eilertsen, Espen Moen; Gjerde, Line C.; Gustavson, Kristin; Hannigan, Laurie John & Havdahl, Alexandra [Show all 11 contributors for this article] (2019). Intergenerational transmission of parental neuroticism to offspring neuroticism, depression, and anxiety .
  • Askeland, Ragna Bugge; Hannigan, Laurie John; Ask, Helga; Tesli, Martin Steen; Corfield, Elizabeth & Andreassen, Ole Andreas [Show all 9 contributors for this article] (2019). Early manifestations of genetic risk for neurodevelopmental disorders.
  • Askeland, Ragna Bugge; Reichborn-Kjennerud, Ted; Hannigan, Laurie John; Ask, Helga; Tesli, Martin Steen & Corfield, Elizabeth [Show all 7 contributors for this article] (2019). Early manifestation of genetic risk for attention deficit/hyperactivity disorder in Norwegian children.
  • Havdahl, Alexandra; Laurie, Hannigan; Askeland, Ragna Bugge; Ask, Helga; Tesli, Martin Steen & Corfield, Elizabeth [Show all 10 contributors for this article] (2019). Polygenic Risk for ADHD and Exposures During Pregnancy in the Norwegian Mother and Child Cohort Study (MoBa).
  • Havdahl, Alexandra & Bishop, Somer L. (2019). Heterogeneity in prevalence of co-occurring psychiatric conditions in autism. The Lancet Psychiatry. ISSN 2215-0374. doi: 10.1016/S2215-0366%2819%2930326-8.
  • Havdahl, Alexandra (2018). Gene-Environment Interplay and Mental Health Problems.
  • Havdahl, Alexandra (2018). Undersøke utvikling av psykiske helseproblemer ved bruk av molekylærgenetiske metoder .
  • Havdahl, Alexandra (2018). Understanding the development of mental health problems utilizing large scale health data and novel molecular genetic models.
  • Havdahl, Alexandra; Bishop, Somer L.; Farmer, Cristan; Schjølberg, Synnve; Bresnahan, Michaeline & Hirtz, Deborah [Show all 17 contributors for this article] (2018). Loss of Social-Communication Skills and Outcomes during Childhood in a Large General Population Cohort.
  • Havdahl, Karoline Alexandra & Leppert, Beate (2018). Maternal health behaviours in pregnancy and neurodevelopmental disorders: Evidence of genetic confounding.
  • Hus Bal, Vanessa; Havdahl, Karoline Alexandra; Bishop, Somer L.; Thurm, Audrey & Farmer, Cristan (2017). The Meaning of SRS-2 Scores is Relative: The Importance of Measurement Invariance in Outcome Measure Selection.
  • Havdahl, Karoline Alexandra (2017). Best Dissertation Award Talk.
  • Havdahl, Karoline Alexandra; Bal, Vanessa Hus; Huerta, Marisela; Pickles, Andrew; Øyen, Anne-Siri & Stoltenberg, Camilla [Show all 8 contributors for this article] (2017). Dr. Havdahl et al. reply. Journal of the American Academy of Child and Adolescent Psychiatry. ISSN 0890-8567. 56(7), p. 619–620. doi: 10.1016/j.jaac.2017.05.010.
  • Havdahl, Karoline Alexandra; Hus Bal, Vanessa; Lord, Catherine; Pickles, Andrew & Bishop, Somer L (2017). In Reply. Journal of the American Academy of Child and Adolescent Psychiatry. ISSN 0890-8567. 56(4), p. 355–357. doi: 10.1016/j.jaac.2017.01.018.
  • Askeland, Ragna Bugge; Hannigan, Laurie John; Ask, Helga; Ayorech, Ziada; Tesli, Martin Steen & Corfield, Elizabeth [Show all 12 contributors for this article] (2020). Early manifestations of genetic risk for neurodevelopmental disorders. PsyArXiv (Preprint artikkel).
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Published Dec. 9, 2020 11:35 AM - Last modified Dec. 9, 2020 4:09 PM

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