Alexandra Havdahl

Associate Professor - Department of Psychology
Image of Alexandra Havdahl
Available hours By agreement
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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

  • Eilertsen, Espen Moen; Jami, Eshim Shahid; McAdams, Tom A.; Hannigan, Laurie J.; Havdahl, Alexandra; Magnus, Per; Evans, David M. & Ystrøm, Eivind (2021). Direct and Indirect Effects of Maternal, Paternal, and Offspring Genotypes: Trio-GCTA. Behavior Genetics.  ISSN 0001-8244.  s 1- 8 . doi: 10.1007/s10519-020-10036-6 Full text in Research Archive.
  • Hannigan, Laurie John; Askeland, Ragna Bugge; Ask, Helga; Tesli, Martin Steen; Corfield, Elizabeth; Lennox, Ziada Ayorech; Helgeland, Øyvind; Magnus, Per; Njølstad, Pål Rasmus; Øyen, Anne-Siri; Stoltenberg, Camilla; Andreassen, Ole Andreas; Davey smith, George; Reichborn-Kjennerud, Ted & Havdahl, Alexandra (2021). Genetic Liability for Schizophrenia and Childhood Psychopathology in the General Population. Schizophrenia Bulletin.  ISSN 0586-7614.
  • 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. . doi: https://doi.org/10.1017/S0033291721000192 Show summary
  • 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. . doi: 10.1192/bjp.2020.259 Show summary
  • Akingbuwa, Wonuola A.; Hammerschlag, Anke R.; Jami, Eshim S.; Allegrini, Andrea G.; Karhunen, Ville; Sallis, Hannah; Ask, Helga; Askeland, Ragna Bugge; Baselmans, Bart; Diemer, Elizabeth W; Hagenbeek, Fiona A.; Havdahl, Alexandra; Hottenga, Jouke-Jan; Mbarek, Hamdi; Rivadeneira, Fernando; Tesli, Martin Steen; van Beijsterveldt, Catharina E. M.; Breen, Gerome; Lewis, Cathryn M.; Thapar, Anita; Boomsma, Dorret I.; Kuja-Halkola, Ralf; Reichborn-Kjennerud, Ted; Magnus, Per; Rimfeld, Kaili; Ystrøm, Eivind; Järvelin, Marjo-Riitta; Lichtenstein, Paul; Lundström, Sebastian; Munafò, Marcus R.; Plomin, Robert; Tiemeier, Henning; Nivard, Michel G.; Bartels, Meike & Middeldorp, Christel M. (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), s 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; Cho, Y; Howe, LD; Hughes, A; Boomsma, D; Havdahl, Alexandra; Hopper, J; Neale, M; Nivard, Michel G.; Pedersen, N; Reynolds, CA; Tucker-D, EM; Grotzinger, A; Howe, Laurence; Morris, Tim; Li, Shuai; Within-Family Consortium, The; 23andMe Research Team, The; Auton, A; Windmeijer, F; Chen, W-M; Bjørngaard, Johan Håkon; Hveem, Kristian; Willer, C; Evans, DM; Kaprio, J; Davey Smith, G; Åsvold, Bjørn Olav; Hemani, G & Davies, Neil Martin (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.
  • Cheesman, Rosa; Eilertsen, Espen Moen; Ahmadzadeh, Yasmin I.; Gjerde, Line C.; Hannigan, Laurie John; Havdahl, Alexandra; Young, Alexander I.; Eley, Thalia C.; Njølstad, Pål Rasmus; Magnus, Per; Andreassen, Ole Andreas; Ystrøm, Eivind & McAdams, Tom A. (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.
  • Havdahl, Alexandra; Farmer, Cristan; Schjølberg, Synnve; Øyen, Anne-Siri; Suren, Pål; Reichborn-Kjennerud, Ted; Magnus, Per; Bresnahan, Michaeline; Hornig, Mady; Susser, Ezra; Lipkin, Walter Ian; Lord, Catherine; Stoltenberg, Camilla; Thurm, Audrey & Bishop, Somer L. (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.  s 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; Havdahl, Alexandra & Skurtveit, Svetlana (2020). Nationwide study of neuropsychiatric comorbidity and medicines use in children with autism spectrum disorder in Norway. Frontiers in Psychiatry.  ISSN 1664-0640.  11, s 1- 8 . doi: 10.3389/fpsyt.2020.596032
  • Sallis, Hannah M.; Croft, Jazz; Havdahl, Alexandra; Jones, Hannah J.; Dunn, Erin C.; Smith, George Davey; Zammit, Stanley & Munafò, Marcus R. (2020). Genetic liability to schizophrenia is associated with exposure to traumatic events in childhood. Psychological Medicine.  ISSN 0033-2917. . doi: 10.1017/S0033291720000537
  • Torvik, Fartein Ask; Eilertsen, Espen Moen; McAdams, Tom A.; Gustavson, Kristin; Zachrisson, Henrik Daae; Brandlistuen, Ragnhild Eek; Gjerde, Line C.; Havdahl, Alexandra; Stoltenberg, Camilla; Ask, Helga & Ystrøm, Eivind (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), s 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), s R170- R179 . doi: 10.1093/hmg/ddz204
  • 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.
  • Leppert, Beate; Havdahl, Alexandra; Riglin, Lucy; Jones, Hannah J.; Zheng, Jie; Davey Smith, George; Tilling, Kate; Thapar, Anita; Reichborn-Kjennerud, Ted & Stergiakouli, Evie (2019). Association of maternal neurodevelopmental risk alleles with early-life exposures. JAMA psychiatry.  ISSN 2168-6238.  76(8), s 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; Reichborn-Kjennerud, Ted; Schjølberg, Synnve; Øyen, Anne-Siri; Magnus, Per; Susser, Ezra; Lipkin, W. Ian & Stoltenberg, Camilla (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.
  • Suren, Pål; Havdahl, Alexandra; Øyen, Anne-Siri; Schjølberg, Synnve; Reichborn-Kjennerud, Ted; Magnus, Per; Bakken, Inger Johanne Landsjøåsen & Stoltenberg, Camilla (2019). Diagnostisering av autismespekterforstyrrelser hos barn i Norge. Tidsskrift for Den norske legeforening.  ISSN 0029-2001.  139(14), s 1372- 1379 . doi: 10.4045/tidsskr.18.0960 Full text in Research Archive. Show summary
  • Ask, Helga; Gustavson, Kristin; Ystrøm, Eivind; Havdahl, Karoline Alexandra; Tesli, Martin Steen; Askeland, Ragna Bugge & Reichborn-Kjennerud, Ted (2018). Association of Gestational Age at Birth With Symptoms of Attention-Deficit/Hyperactivity Disorder in Children. JAMA pediatrics.  ISSN 2168-6203.  172(8), s 749- 756 . doi: 10.1001/jamapediatrics.2018.1315
  • Caramaschi, Doretta; Taylor, Amy; Richmond, Rebecca C.; Havdahl, Alexandra; Golding, Jean; Relton, Caroline; Munafo, Marcus R; Davey Smith, George & Rai, Dheeraj (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
  • Øien, Roald A; Schjølberg, Synnve; Volkmar, Fred R.; Shic, Frederick; Cicchetti, Domenic V.; Nordahl-Hansen, Anders Johan; Stenberg, Nina; Hornig, Mady; Havdahl, Karoline Alexandra; Øyen, Anne-Siri; Ventola, Pamela; Susser, Ezra S.; Eisemann, Martin & Chawarska, Katarzyna (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.
  • Bishop, Somer L.; Farmer, Cristan; Hus Bal, Vanessa; Robinson, Elise; Willsey, AJ; Werling, DM; Havdahl, Karoline Alexandra; Sanders, SJ & Thurm, A. (2017). Identification of Developmental and Behavioral Markers Associated With Genetic Abnormalities in Autism Spectrum Disorder. American Journal of Psychiatry.  ISSN 0002-953X.  174(6), s 576- 585 . doi: 10.1176/appi.ajp.2017.16101115
  • Bishop, Somer L.; Huerta, Marisela; Gotham, K.; Havdahl, Karoline Alexandra; Pickles, Andrew; Duncan, A.; Hus Bal, Vanessa; Croen, L. & Lord, Catherine (2017). The autism symptom interview, school-age: A brief telephone interview to identify autism spectrum disorders in 5-to-12-year-old children. Autism Research.  ISSN 1939-3792.  10(1), s 78- 88 . doi: 10.1002/aur.1645
  • Havdahl, Karoline Alexandra; Bishop, Somer L.; Surén, Pål; Øyen, Anne-Siri; Lord, Catherine; Pickles, Andrew; von Tetzchner, Stephen; Schjølberg, Synnve; Gunnes, Nina; Hornig, Mady; Lipkin, W. Ian; Susser, Ezra; Bresnahan, Michaeline; Magnus, Per; Stenberg, Nina; Reichborn-Kjennerud, Ted & Stoltenberg, Camilla (2017). The influence of parental concern on the utility of autism diagnostic instruments. Autism Research.  ISSN 1939-3792.  10(10), s 1672- 1686 . doi: 10.1002/aur.1817
  • Bishop, Somer L.; Havdahl, Alexandra; Huerta, Marisela & Lord, Catherine (2016). Subdimensions of social-communication impairment in autism spectrum disorder. Journal of Child Psychology and Psychiatry.  ISSN 0021-9630.  57(8), s 909- 916 . doi: 10.1111/jcpp.12510
  • Havdahl, Alexandra; Tetzchner, Stephen von; Huerta, Marisela; Lord, Catherine & Bishop, Somer L. (2016). Utility of the Child Behavior Checklist as a Screener for Autism Spectrum Disorder. Autism Research.  ISSN 1939-3792.  9(1), s 33- 42 . doi: 10.1002/aur.1515
  • Havdahl, Karoline Alexandra; Hus Bal, Vanessa; Huerta, Marisela; Pickles, Andrew; Øyen, Anne-Siri; Stoltenberg, Camilla; Lord, Catherine & Bishop, Somer L. (2016). Multidimensional influences on autism symptom measures: Implications for use in etiological research. Journal of the American Academy of Child and Adolescent Psychiatry.  ISSN 0890-8567.  55(12), s 1054- 1063 . doi: 10.1016/j.jaac.2016.09.490

View all works in Cristin

  • 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
  • Askeland, Ragna Bugge; Hannigan, Laurie John; Ask, Helga; Lennox, Ziada Ayorech; Tesli, Martin Steen; Corfield, Elizabeth; Davey-Smith, George; Reichborn-Kjennerud, Ted & Havdahl, Alexandra (2020). Genetic risk factors for neurodevelopmental disorders.
  • Askeland, Ragna Bugge; Hannigan, Laurie John; Ask, Helga; Lennox, Ziada Ayorech; Tesli, Martin Steen; Corfield, Elizabeth; Magnus, Per; Njølstad, Pål Rasmus; Andreassen, Ole Andreas; Davey smith, George; Reichborn-Kjennerud, Ted & Havdahl, Alexandra (2020). Early manifestations of genetic risk for neurodevelopmental disorders.
  • Hannigan, Laurie John; Askeland, Ragna Bugge; Ask, Helga; Tesli, Martin Steen; Corfield, Elizabeth; Lennox, Ziada Ayorech; Magnus, Per; Njølstad, Pål Rasmus; Øyen, Anne-Siri; Stoltenberg, Camilla; Andreassen, Ole Andreas; Davey smith, George; Reichborn-Kjennerud, Ted & Havdahl, Alexandra (2020). Developmental milestones in early childhood and genetic liability to neurodevelopmental disorders.
  • Havdahl, Alexandra (2020). Autism and autistic traits in the Norwegian Mother, Father and Child Cohort Study (MoBa).
  • 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; Niarchou, M; Starnawska, A & van der Merwe, Celia (2020). Genetic contributions to autism spectrum disorder.
  • Lennox, Ziada Ayorech; Davies, Neil; Hannigan, Laurie John; Askeland, Ragna Bugge; Tesli, Martin Steen; Andreassen, Ole Andreas; Reichborn-Kjennerud, Ted; Helgeland, Øyvind; Johansson, Stefan; Njølstad, Pål Rasmus; Ask, Helga; Davey Smith, George; Bulik, Cynthia & Havdahl, Alexandra (2020). Which Metabo-Psychiatric Factors Affect the Risk of Anorexia Nervosa? A Mendelian Randomization Study.
  • 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.
  • Ask, Helga; Eilertsen, Espen Moen; Gjerde, Line C.; Gustavson, Kristin; Hannigan, Laurie John; Havdahl, Alexandra; McAdams, Tom A.; Hettema, John M.; Reichborn-Kjennerud, Ted; Torvik, Fartein Ask & Ystrøm, Eivind (2019). Intergenerational transmission of parental neuroticism to offspring neuroticism, depression, and anxiety.
  • Ask, Helga; Eilertsen, Espen Moen; Gjerde, Line C.; Gustavson, Kristin; Hannigan, Laurie John; Havdahl, Alexandra; McAdams, Tom A.; Hettema, John M.; Reichborn-Kjennerud, Ted; Torvik, Fartein Ask & Ystrøm, Eivind (2019). Intergenerational transmission of parental neuroticism to offspring neuroticism, depression, and anxiety. Behavior Genetics.  ISSN 0001-8244.  49(6), s 548- 548 . doi: 10.1007/s10519-019-09973-8
  • Ask, Helga; Hannigan, Laurie; Davies, Neil; Gustavson, Kristin; Biele, Guido; Richardson, Thomas; Cornish, Rosie; Corfield, Elizabeth; Askeland, Ragna Bugge; Tesli, Martin Steen; Tilling, Kate; Davey Smith, George; Magnus, Per; Reichborn-Kjennerud, Ted & Havdahl, Alexandra (2019). Exploring the Associations Between Health-Related Polygenic Scores and Participation in the Norwegian Mother and Child Pregnancy Cohort (MoBa).
  • Askeland, Ragna Bugge; Hannigan, Laurie John; Ask, Helga; Tesli, Martin Steen; Corfield, Elizabeth; Andreassen, Ole Andreas; Davey-Smith, George; Reichborn-Kjennerud, Ted & Havdahl, Alexandra (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 & Havdahl, Alexandra (2019). Early manifestation of genetic risk for attention deficit/hyperactivity disorder in Norwegian children.
  • Cheesman, Rosa; Eilertsen, Espen Moen; Ahmadzadeh, Yasmin; Gjerde, Line C.; Hannigan, Laurie; Havdahl, Alexandra; Eley, Thalia C.; Ystrøm, Eivind & McAdams, Tom A. (2019). Separating child and parent influences on child depression and anxiety using genomic family data.
  • Cheesman, Rosa; Eilertsen, Espen Moen; Ahmadzadeh, Yasmin; Gjerde, Line C.; Hannigan, Laurie; Havdahl, Alexandra; Eley, Thalia C.; Ystrøm, Eivind & McAdams, Tom A. (2019). Separating child and parent influences on child depression and anxiety using genomic family data. European Neuropsychopharmacology.  ISSN 0924-977X.  29, s S119- S119 . doi: 10.1016/j.euroneuro.2019.08.012
  • Cheesman, Rosa; Eilertsen, Espen Moen; Ahmadzadeh, Yasmin; Gjerde, Line C.; Hannigan, Laurie; Havdahl, Alexandra; Eley, Thalia; Ystrøm, Eivind & McAdams, Tom A. (2019). Separating child and parent influences on child emotional problems using genomic family data.
  • Cheesman, Rosa; Eilertsen, Espen Moen; Ahmadzadeh, Yasmin; Gjerde, Line C.; Hannigan, Laurie; Havdahl, Alexandra; Eley, Thalia; Ystrøm, Eivind & McAdams, Tom A. (2019). Separating child and parent influences on child emotional problems using genomic family data. Behavior Genetics.  ISSN 0001-8244.  49(6), s 523- 524 . doi: 10.1007/s10519-019-09973-8
  • Hannigan, Laurie; Askeland, Ragna Bugge; Ask, Helga; Tesli, Martin Steen; Corfield, Elizabeth; Mcadams, Tom; Øyen, Anne-Siri; Davey-Smith, George; Reichborn-Kjennerud, Ted & Havdahl, Alexandra (2019). Perinatal maternal stress and early-life behavioural and emotional problems: examining the role of genetically-influenced environmental sensitivity in mothers and offspring.
  • Havdahl, Alexandra (2019). Autism in Norway.
  • Havdahl, Alexandra (2019). Using population-based cohort studies and nationwide registries to study autism and other neurodevelopmental disorders.
  • Havdahl, Alexandra & Bishop, Somer L. (2019). Heterogeneity in prevalence of co-occurring psychiatric conditions in autism. The Lancet Psychiatry.  ISSN 2215-0374. . doi: https://doi.org/10.1016/S2215-0366(19)30326-8
  • Havdahl, Alexandra; Laurie, Hannigan; Askeland, Ragna Bugge; Ask, Helga; Tesli, Martin Steen; Corfield, Elizabeth; Øyen, Anne-Siri; Andreassen, Ole; Davey Smith, George & Reichborn-Kjennerud, Ted (2019). Polygenic Risk for ADHD and Exposures During Pregnancy in the Norwegian Mother and Child Cohort Study (MoBa). Show summary
  • Skurtveit, Svetlana; Kiselev, Yury; Handal, Marte; Stoltenberg, Camilla; Reichborn-Kjennerud, Ted; Suren, Pål; Havdahl, Alexandra & Hjellvik, Vidar (2019). Co-Occurring Neuropsychiatric Diagnoses and Use of Psychotropic Drugs in Children with Autism Spectrum Disorder. Pharmacoepidemiology and Drug Safety.  ISSN 1053-8569. . doi: 10.10002/pds.4864
  • Tesli, Martin Steen; Corfield, Elizabeth; Zayats, Tetyana; Ask, Helga; Askeland, Ragna Bugge; Hannigan, Laurie; Robinson, Elise; Andreassen, Ole Andreas; Havdahl, Alexandra & Reichborn-Kjennerud, Ted (2019). Investigation of shared genetic risk between cardiometabolic morbidity and ADHD in a Norwegian family cohort using polygenic transmission disequilibrium test.
  • Havdahl, Alexandra (2018). Challenges in assessment of autism spectrum disorder.
  • Havdahl, Alexandra (2018). Gene-Environment Interplay and Mental Health Problems.
  • Havdahl, Alexandra (2018). Understanding the development of mental health problems utilizing large scale health data and novel molecular genetic models.
  • Havdahl, Alexandra (2018). Undersøke utvikling av psykiske helseproblemer ved bruk av molekylærgenetiske metoder.
  • Havdahl, Alexandra; Bishop, Somer L.; Farmer, Cristan; Schjølberg, Synnve; Bresnahan, Michaeline; Hirtz, Deborah; Hornig, Mady; Lord, Catherine; Reichborn-Kjennerud, Ted; Suren, Pål; Øyen, Anne-Siri; Magnus, Per; Susser, Ezra; Lipkin, W. Ian; Stoltenberg, Camilla; Davey Smith, George & Thurm, Audrey (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.
  • Havdahl, Karoline Alexandra (2017). Best Dissertation Award Talk.
  • Havdahl, Karoline Alexandra; Bal, Vanessa Hus; Huerta, Marisela; Pickles, Andrew; Øyen, Anne-Siri; Stoltenberg, Camilla; Lord, Catherine & Bishop, Somer L. (2017). Dr. Havdahl et al. reply. Journal of the American Academy of Child and Adolescent Psychiatry.  ISSN 0890-8567.  56(7), s 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), s 355- 357 . doi: 10.1016/j.jaac.2017.01.018
  • 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 (2016). Context matters: Factors affecting assessment of autism features.
  • Havdahl, Karoline Alexandra (2016). Factors influencing assessment of autism spectrum disorders.
  • Havdahl, Karoline Alexandra (2016). Tiltak for å fremme kommunikasjon, læring og sosialt engasjement hos små barn med autisme.
  • Havdahl, Karoline Alexandra (2016, 01. mai). Viktig med tidlig oppdagelse av autisme. [Tidsskrift].  Nyhetsbrev Den Norske Mor og Barn Undersøkelsen.
  • Havdahl, Karoline Alexandra & Bishop, Somer L. (2016, 01. november). Questions for Bishop, Havdahl: Tantrums trick autism tests. [Internett].  Spectrum (https://spectrumnews.org).
  • Havdahl, Karoline Alexandra; Bishop, Somer L.; Farmer, C.; Hus Bal, Vanessa; Robinson, Elise; Sanders, Stephan JK & Thurm, A. (2016). Phenotype-genotype associations in the Simons Simplex Collection for autism spectrum disorder.
  • Havdahl, Karoline Alexandra; Bishop, Somer L.; Surén, Pål; Øyen, Anne-Siri; Lord, Catherine; Pickles, Andrew; von Tetzchner, Stephen; Schjølberg, Synnve; Gunnes, Nina; Mady, Hornig; Michaeline, Bresnahan; Lipkin, Ian; Susser, Ezra; Magnus, Per; Stenberg, Nina; Reichborn-Kjennerud, Ted & Stoltenberg, Camilla (2016). Validity of Standardized Diagnostic Instruments for Autism Spectrum Disorders in Toddlers Recruited from a Population-Based Cohort: The Influence of Parental Concern.
  • Havdahl, Karoline Alexandra; Hus Bal, Vanessa; Huerta, Marisela; Lord, Catherine & Bishop, Somer L. (2015). Improving the Discriminative Validity of the Social Responsiveness Scale for Autism Spectrum Disorder by Taking Emotional/Behavioral Problems into Account.
  • Havdahl, Karoline Alexandra; Huerta, Marisela; Molloy, E. & Bishop, Somer L. (2014). Utility of the Child Behavior Checklist in Differentiating Autism Spectrum Disorders from Other Clinical Disorders.
  • Havdahl, Karoline Alexandra (2010). Retningslinjer for utredning av autismespekterforstyrrelser hos voksne (kompendium skrevet på oppdrag fra Distriktspsykiatrisk senter Follo).

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Published Dec. 9, 2020 11:35 AM - Last modified Dec. 9, 2020 4:09 PM