Alexandra Karoline Saasen Havdahl
Center Director
Contact
Send email {model.translations.sendEmailTo} Alexandra.Havdahl@fhi.no
Department
Division for Public Health and Prevention - management and staff
Responsibilities
Alexandra Havdahl is Centre Director of the PsychGen Center for Genetic Epidemiology and Mental Health at the Norwegian Institute of Public Health. Since 2007, she has worked with data collection and research on autism, neurodevelopment and mental health in the Norwegian Mother, Father and Child Cohort Study (MoBa), a general population pregnancy cohort run by the NIPH. Havdahl participates in several international projects, including as coordinator of the MoBa contribution to several Psychiatric Genomics Consortium working groups, and as member of the Lancet Commission on the Future of Care and Clinical Research in Autism.
Projects and publications
- Anna Gui, Anja Hollowell, Emilie M. Wigdor, Morgan J. Morgan, Laurie John Hannigan, Elizabeth Claire Corfield, Veronika Odintsova, Jouke-Jan Hottenga, Andrew Wong, René Pool, Harriet Cullen, Siân Wilson, Varun Warrier, Espen Moen Eilertsen, Ole Andreassen, Christel M. Middeldorp, Beate St Pourcain, Meike Bartels, Dorret I. Boomsma, Catharina A. Hartman, Elise B. Robinson, Tomoki Arichi, Anthony D. Edwards, Mark H. Johnson, Frank Dudbridge, Stephan J. Sanders, Alexandra Havdahl, Angelica Ronald, (2025). Genome-wide association meta-analysis of age at onset of walking in over 70,000 infants of European ancestry. Nature Human Behaviour doi: 10.1038/s41562-025-02145-1
- Karen Christina Walker, Ina O. Specht, Vibeke Hjortdal, Henrik T. Christesen, Berit L. Heitmann, Gillian Santorelli, Jane West, Per Minor Magnus, Pål Rasmus Njølstad, Elizabeth Claire Corfield, Alexandra Havdahl, Maria Christine Magnus, Kurt Taylor, Deborah A. Lawlor, (2025). Circulating 25-Hydroxyvitamin D Levels During Pregnancy and Risk of Congenital Heart Diseases: Multivariable and Mendelian Randomization Analyses Using 3 Birth Cohorts. Journal of the American Heart Association (JAHA) doi: 10.1161/JAHA.124.036273
- A.G. Allegrini, Laurie John Hannigan, L. Frach, W. Barkhuizen, J.R. Baldwin, Ole Andreassen, Daniela Bragantini, Alexandra Havdahl, J.-B. Pingault, (2025). Intergenerational transmission of polygenic predisposition for neuropsychiatric traits on emotional and behavioural difficulties in childhood. Nature Communications doi: 10.1038/s41467-025-57694-w
- Aleksandra Kanina, Arvid Sjölander, Miriam I. Martini, Agnieszka Butwicka, Henrik Larsson, Amanda M. Hughes, Márta K. Radó, Mark J. Taylor, Alexandra Havdahl, Helga Ask, Mina A. Rosenqvist, (2025). Prenatal exposure to adverse life events and autism and autistic-like traits in children in the Norwegian Mother, Father and Child Cohort Study (MoBa). JCPP Advances s. 1-10. doi: 10.1002/jcv2.70002
- Christina Dardani, Jamie Robinson, Hannah J. Jones, Dheeraj Rai, Evie Stergiakouli, Jakob Grove, Renee M. Gardner, Andrew M. McIntosh, Alexandra Havdahl, Gibran Hemani, George Davey Smith, Tom G. Richardson, Tom R. Gaunt, Golam M. Khandaker, (2025). Immunological drivers and potential novel drug targets for major psychiatric, neurodevelopmental, and neurodegenerative conditions. Molecular Psychiatry doi: 10.1038/s41380-025-03032-x
- Yunsung Lee, Miriam Gjerdevik, Astanand Jugessur, Håkon K. Gjessing, Elizabeth Claire Corfield, Alexandra Havdahl, Jennifer Ruth Harris, Maria Christine Magnus, Siri Eldevik Håberg, Per Minor Magnus, (2025). Parent-of-Origin Effects in Childhood Asthma at Seven Years of Age. Genetic Epidemiology doi: 10.1002/gepi.70007
- Nasimeh Naseri, Dani Beck, Lia Ferschmann, Eira Ranheim Aksnes, Alexandra Havdahl, Maria Jalbrzikowski, Linn Bonaventure Fridman, Christian Krog Tamnes, (2025). MRI-based cortical gray/white matter contrast in young adults who endorse psychotic experiences or are at genetic risk for psychosis. Psychiatry Research : Neuroimaging doi: 10.1016/j.pscychresns.2025.111981
- Yuanjun Gu, Eva Maria-Stauffer, Saashi A. Bedford, Xinhe Zhang, Elizabeth Weir, Florina Uzefovsky, Alexandros Tsompanidis, Deepak Srivastava, Laura Sichlinger, David Rowitch, Marcin Radecki, Lucia Dutan Polit, Adam Pavlinek, Kathy Niakan, Mahmoud Koko Musa, Jonathan Mill, Jose Gonzalez Martinez, Michael Lombardo, Madeline Lancaster, Meng-Chuan Lai, Yumnah Khan, Matthew Hurles, Rosemary Holt, Alexander Heazell, Alexandra Havdahl, David M. Greenberg, Daniel Geschwind, Lidia Gabis, Alice Franklin, Dori Floris, Joanna Davis, Jonathan Davies, Graham Burton, Tal Biron-Shental, Richard Bethlehem, Rosie Bamford, Bonnie Ayeung, Carrie Allison, Deep Adhya, Thomas Werge, Merete Nordentoft, Preben Bo Mortensen, Ole Mors, David M. Hougaard, Jonas Bybjerg-Grauholm, Anders Borglum, Rafael Romero-Garcia, Jakob Grove, Anders D. Børglum, Hilary Martin, Simon Baron-Cohen, Richard A. I. Bethlehem, Varun Warrier, (2025). Polygenic scores for autism are associated with reduced neurite density in adults and children from the general population. Molecular Psychiatry doi: 10.1038/s41380-025-02927-z
- Jo Adrian Dahl Askelund, Laura Elizabeth Hegemann, Andrea G. Allegrini, Elizabeth Claire Corfield, Helga Ask, Neil Martin Davies, Ole Andreassen, Alexandra Havdahl, Laurie J. Hannigan, (2025). The Genetic Architecture of Differentiating Behavioral and Emotional Problems in Early Life. Biological Psychiatry doi: 10.1016/j.biopsych.2024.12.021
- Laura Elizabeth Hegemann, Espen Moen Eilertsen, Johanne Hagen Pettersen, Elizabeth Claire Corfield, Rosa Catherine Gillespie Cheesman, Leonard Frach, Ludvig Daae Bjørndal, Helga Ask, Beate St Pourcain, Alexandra Havdahl, Laurie John Hannigan, (2025). Direct and indirect genetic effects on early neurodevelopmental traits. Journal of Child Psychology and Psychiatry doi: 10.1111/jcpp.14122
- Amy Shakeshaft, Jessica R. Mundy, Emil M. Pedersen, Charlotte A. Dennison, Lucy Riglin, Daniela Bragantini, Elizabeth Claire Corfield, Ajay K. Thapar, Ole Andreassen, Evie Stergiakouli, George Davey Smith, Laurie Hannigan, Katherine L. Musliner, Alexandra Havdahl, Anita Thapar, (2025). Long-term physical health conditions and youth anxiety and depression: Is there a causal link?. Psychological Medicine doi: 10.1017/S0033291724003271
- Mark J. Adams, Fabian Streit, Xiangrui Meng, Swapnil Awasthi, Brett N. Adey, Karmel W. Choi, V. Kartik Chundru, Jonathan R.I. Coleman, Bart Ferwerda, Jerome C. Foo, Zachary F. Gerring, Olga Giannakopoulou, Priya Gupta, Alisha S.M. Hall, Arvid Harder, David M. Howard, Helga Ask, Elizabeth Claire Corfield, Alexandra Havdahl, Ted Reichborn-Kjennerud, Ottar Bjerkeset, Ole Kristian Drange, Sigrid Børte, John Anker Henrik Zwart, Bendik Kristoffer Slagsvold Winsvold, Kristian Hveem, Srdjan Djurovic, Olav Bjerkehagen Smeland, Ole Andreassen, Martin Steen Tesli, Christopher Hübel, Andrew M. McIntosh, Cathryn M. Lewis, Stephan Ripke, Naomi R. Wray, Karoline Kuchenbaecker, Aeilko H. Zwinderman, Alex S. F. Kwong, Daniel F. Levey, Brittany L. Mitchell, Guiyan Ni, Vanessa K. Ota, Oliver Pain, Gita A. Pathak, Eva C. Schulte, Xueyi Shen, Jackson G. Thorp, Alicia Walker, Shuyang Yao, Jian Zeng, (2025). Trans-ancestry genome-wide study of depression identifies 697 associations implicating cell types and pharmacotherapies. Cell doi: 10.1016/j.cell.2024.12.002
- Ingunn Olea Lund, Pia Myklebust Johannessen, Christian Madsen, Lars Johan Hauge, Alexandra Havdahl, Anne Reneflot, Ragnhild Eek Brandlistuen, Helga Ask, (2025). Patterns of psychiatric healthcare use during pandemic times among boys and girls with pre-existing diagnoses: a Norwegian nationwide primary and specialist healthcare registry study. BMC Psychiatry s. 1-15. doi: 10.1186/s12888-024-06422-7
- Ingunn Olea Lund, Laurie Hannigan, Helga Ask, Jo Adrian Dahl Askelund, Laura Elizabeth Hegemann, Elizabeth Claire Corfield, Robyn Wootton, Yasmin I. Ahmadzadeh, George Davey Smith, Tom A. McAdams, Eivind Ystrøm, Alexandra Havdahl, (2025). Prenatal maternal stress: triangulating evidence for intrauterine exposure effects on birth and early childhood outcomes across multiple approaches. BMC Medicine s. 1-17. doi: 10.1186/s12916-024-03834-w
- Isabelle Sylvie Budin Ljøsne, Nanna Alida Grit Fredheim, Charlotte Alison Jevne, Bojana Milanovic Kleven, Marie Aline Charles, Janine F Felix, Robin Flaig, María Paz García-Portilla, Alexandra Havdahl, Shahid Islam, Shona M. Kerr, Inger Kristine Meder, Lynn Molloy, Susan Morton, Costanza Pizzi, Aamnah Rahman, Gonneke Willemsen, Diane Wood, Jennifer Ruth Harris, (2024). Participant engagement and involvement in longitudinal cohort studies: qualitative insights from a selection of pregnancy and birth, twin, and family-based population cohort studies. BMC Medical Research Methodology doi: 10.1186/s12874-024-02419-8
- Erna V. Ivarsdottir, Julius Gudmundsson, Vinicius Tragante, Gardar Sveinbjornsson, Snaedis Kristmundsdottir, Simon N. Stacey, Gisli H. Halldorsson, Magnus I. Magnusson, Asmundur Oddsson, G. Bragi Walters, Asgeir Sigurdsson, Saedis Saevarsdottir, Doruk Beyter, Gudmar Thorleifsson, Bjarni V. Halldorsson, Pall Melsted, Hreinn Stefansson, Ingileif Jonsdottir, Erik Sørensen, Ole B. Pedersen, Christian Erikstrup, Martin Bøgsted, Mette Pøhl, Andreas Røder, Hein Vincent Stroomberg, Ismail Gögenur, Jens Hillingsø, Stig E. Bojesen, Ulrik Lassen, Estrid Høgdall, Henrik Ullum, Søren Brunak, Sisse R. Ostrowski, Ole Birger Pedersen, Ida Elken Sønderby, Oleksandr Frei, Srdjan Djurovic, Alexandra Havdahl, Pål Møller, Mev Dominguez Valentin, Jan Haavik, Ole A. Andreassen, Eivind Hovig, Bjarni A. Agnarsson, Rafn Hilmarsson, Oskar Th. Johannsson, Trausti Valdimarsson, Steinn Jonsson, Pall H. Moller, Jon H. Olafsson, Bardur Sigurgeirsson, Jon G. Jonasson, Geir Tryggvason, Hilma Holm, Patrick Sulem, Thorunn Rafnar, Daniel F. Gudbjartsson, Kari Stefansson, (2024). Gene-based burden tests of rare germline variants identify six cancer susceptibility genes. Nature Genetics s. 2422-2433. doi: 10.1038/s41588-024-01966-6
- Shannon D’Urso, Robyn Wootton, Helga Ask, Caroline Brito Nunes, Ole A. Andreassen, Liang-Dar Hwang, Gunn-Helen Øiseth Moen, David M. Evans, Alexandra Havdahl, (2024). Mendelian randomization analysis of maternal coffee consumption during pregnancy on offspring neurodevelopmental difficulties in the Norwegian Mother, Father and Child Cohort Study (MoBa). Psychological Medicine s. 3548-3561. doi: 10.1017/S0033291724002216
- Nora Refsum Bakken, Nadine Parker, Laurie John Hannigan, Espen Hagen, Pravesh Parekh, Alexey Shadrin, Piotr Pawel Jaholkowski, Evgeniia Frei, Viktoria Birkenæs, Guy Hindley, Laura Hegemann, Elizabeth Claire Corfield, Martin Steen Tesli, Alexandra Havdahl, Ole A. Andreassen, (2024). Childhood trajectories of emotional and behavioral difficulties are related to polygenic liability for mood and anxiety disorders. Journal of Child Psychology and Psychiatry s. 350-365. doi: 10.1111/jcpp.14063
- Johanne Hagen Pettersen, Laura Hegemann, Kristin Gustavson, Ingunn Olea Lund, Pia Jensen, Cynthia M. Bulik, Ole A. Andreassen, Alexandra Havdahl, Ragnhild Eek Brandlistuen, Laurie John Hannigan, Helga Ask, (2024). Eating Problems Among Adolescent Boys and Girls Before and During the Covid-19 Pandemic. International Journal of Eating Disorders s. 193-205. doi: 10.1002/eat.24314
- Rosa Catherine Gillespie Cheesman, Ville Anapaz, Sjoerd van Alten, Abdel Abdellaoui, Ralph Pascual Ortiz Porneso, Joakim Coleman Ebeltoft, Ziada Ayorech, Perline Demange, Espen Moen Eilertsen, Agnes Fauske, Alexandra Havdahl, Hannu Lahtinen, Torkild Hovde Lyngstad, Qi Qin, Andrea Ganna, Eivind Ystrøm, (2024). Genetic associations with educational fields in >460,000 individuals. PsyArXiv doi: 10.31234/osf.io/epura
- Lia Ferschmann, Håkon Grydeland, Niamh MacSweeney, Dani Beck, Marieke G.N. Bos, Linn Bonaventure Norbom, Eira Ranheim Aksnes, Mona Bekkhus, Alexandra Havdahl, Eveline A. Crone, Tilmann von Soest, Christian Krog Tamnes, (2024). The importance of timing of socioeconomic disadvantage throughout development for depressive symptoms and brain structure. Developmental Cognitive Neuroscience doi: 10.1016/j.dcn.2024.101449
- Ciarrah-Jane S Barry, Venexia M. Walker, Christy Burden, Alexandra Havdahl, Neil Martin Davies, (2024). Genetic Insights Into Perinatal Outcomes of Maternal Antihypertensive Therapy During Pregnancy. JAMA Network Open s. 1-18. doi: 10.1001/jamanetworkopen.2024.26234
- Robyn E Wootton, Kyle Dack, Hannah J Jones, Lucy Riglin, Paul Madley-Dowd, Carolina Borges, Panagiota Pagoni, Christine Roth, Anne Lise Brantsæter, Elizabeth Claire Corfield, Camilla Stoltenberg, Anne-Siri Øyen, George Davey Smith, Helga Ask, Anita Thapar, Evie Stergiakouli, Alexandra Havdahl, (2024). Testing maternal effects of vitamin-D and omega-3 levels on offspring neurodevelopmental traits in the Norwegian Mother, Father and Child Cohort Study. Psychological Medicine s. 3323-3333. doi: 10.1017/S0033291724001466
- Amanda M. Hughes, Fartein Ask Torvik, Elsje van Bergen, Laurie John Hannigan, Elizabeth Claire Corfield, Ole A. Andreassen, Eivind Ystrøm, Helga Ask, George Davey Smith, Neil Martin Davies, Alexandra Havdahl, (2024). Parental education and children’s depression, anxiety, and ADHD traits, a within-family study in MoBa. npj Science of learning doi: 10.1038/s41539-024-00260-8
- Catherine Friel, Alastair H. Leyland, Jana J. Anderson, Alexandra Havdahl, Anne Lise Brantsæter, Ruth Dundas, (2024). Healthy Prenatal Dietary Pattern and Offspring Autism. JAMA Network Open doi: 10.1001/jamanetworkopen.2024.22815
- Laura Hegemann, Elizabeth Claire Corfield, Adrian Dahl Askelund, Andrea G. Allegrini, Ragna Bugge Askeland, Angelica Ronald, Helga Ask, Beate St Pourcain, Ole A. Andreassen, Laurie John Hannigan, Alexandra Havdahl, (2024). Genetic and phenotypic heterogeneity in early neurodevelopmental traits in the Norwegian Mother, Father and Child Cohort Study. Molecular Autism doi: 10.1186/s13229-024-00599-0
- Lisanne A. E. M. van Houtum, William F. C. Baaré, Christian F. Beckmann, Josefina Castro-Fornieles, Charlotte A. M. Cecil, Juliane Dittrich, Bjørn H. Ebdrup, Jörg M. Fegert, Alexandra Havdahl, Manon H. J. Hillegers, Raffael Kalisch, Steven A. Kushner, Isabelle M. Mansuy, Signe Mežinska, Carmen Moreno, Ryan L. Muetzel, Alexander Neumann, Merete Nordentoft, Jean-Baptiste Pingault, Martin Preisig, Andrea Raballo, John Saunders, Emma Sprooten, Gisela Sugranyes, Henning Tiemeier, Geeske M. van Woerden, Caroline L. Vandeleur, Neeltje E. M. van Haren, (2024). Running in the FAMILY: understanding and predicting the intergenerational transmission of mental illness. European Child and Adolescent Psychiatry s. 3885-3898. doi: 10.1007/s00787-024-02423-9
- Adrian Dahl Askelund, Robyn E. Wootton, Fartein A. Torvik, Rebecca B. Lawn, Helga Ask, Elizabeth C. Corfield, Maria C. Magnus, Ted Reichborn-Kjennerud, Per M. Magnus, Ole A. Andreassen, Camilla Stoltenberg, George Davey Smith, Neil Martin Davies, Alexandra Havdahl, Laurie John Hannigan, (2024). Assessing causal links between age at menarche and adolescent mental health: a Mendelian randomisation study. BMC Medicine doi: 10.1186/s12916-024-03361-8
- Marta H. Hernandez, Jacqueline Mallory Cohen, Karoline Hansen Skåra, Thea Karoline Walstad Grindstad, Yunsung Lee, Per Magnus, Pål Rasmus Njølstad, Ole A. Andreassen, Elizabeth Claire Corfield, Alexandra Havdahl, Espen Molden, Kari Furu, Maria Christine Magnus, Alvaro Hernaez Camba, (2024). Placental efflux transporters and antiseizure or antidepressant medication use impact birth weight in MoBa cohort. iScience doi: 10.1016/j.isci.2024.109285
- Alvaro Hernaez Camba, Karoline Hansen Skåra, Christian Magnus Page, Vera R. Mitter, Marta H. Hernández, Per Minor Magnus, Pål Rasmus Njølstad, Ole A. Andreassen, Elizabeth C. Corfield, Alexandra Havdahl, Øyvind Erik Næss, Ben Brumpton, Bjørn Olav Åsvold, Deborah A. Lawlor, Abigail Fraser, Maria Christine Magnus, (2024). Parental genetically predicted liability for coronary heart disease and risk of adverse pregnancy outcomes: a cohort study. BMC Medicine doi: 10.1186/s12916-023-03223-9
- Ellen Verhoef, Andrea G. Allegrini, Philip R. Jansen, Katherine Lange, Carol A. Wang, Angela T. Morgan, Tarunveer S. Ahluwalia, Christos Symeonides, Ole A. Andreassen, Meike Bartels, Dorret Boomsma, Philip S. Dale, Erik Ehli, Dietmar Fernandez-Orth, Mònica Guxens, Christian Hakulinen, Kathleen Mullan Harris, Simon Haworth, Lucía de Hoyos, Vincent Jaddoe, Liisa Keltikangas-Järvinen, Terho Lehtimäki, Christel Middeldorp, Josine L. Min, Pashupati P. Mishra, Pål Rasmus Njølstad, Jordi Sunyer, Ashley E. Tate, Nicholas Timpson, Camiel van der Laan, Martine Vrijheid, Eero Vuoksimaa, Alyce M. Whipp, Eivind Ystrøm, Else Eising, Marie-Christine Franken, Elina Hypponen, Toby Mansell, Mitchell Olislagers, Emina Omerovic, Kaili Rimfeld, Fenja Schlag, Saskia Selzam, Chin Yang Shapland, Henning Tiemeier, Andrew J.O. Whitehouse, Richard Saffery, Klaus Bønnelykke, Sheena Reilly, Craig E. Pennell, Melissa Wake, Charlotte A. M. Cecil, Robert Plomin, Simon E. Fisher, Beate St Pourcain, Tetyana Zayats, Jan Haavik, Jennifer Ruth Harris, Øyvind Helgeland, Stefan Johansson, Gun Peggy Strømstad Knudsen, Alexandra Havdahl, Per Minor Magnus, Ted Reichborn-Kjennerud, (2024). Genome-Wide Analyses of Vocabulary Size in Infancy and Toddlerhood: Associations With Attention-Deficit/Hyperactivity Disorder, Literacy, and Cognition-Related Traits. Biological Psychiatry s. 859-869. doi: 10.1016/j.biopsych.2023.11.025
- Ludvig Daae Bjørndal, Espen Moen Eilertsen, Ziada Ayorech, Rosa Cheesman, Yasmin I. Ahmadzadeh, Jessie R. Baldwin, Helga Ask, Laurie John Hannigan, Tom A. McAdams, Alexandra Havdahl, Ragnhild Bang Nes, Espen Røysamb, Eivind Ystrøm, (2024). Disentangling direct and indirect genetic effects from partners and offspring on maternal depression using trio-GCTA. Nature Mental Health s. 417-425. doi: 10.1038/s44220-024-00207-3
- Leonard Frach, Wikus Barkhuizen, Andrea G. Allegrini, Helga Ask, Laurie J. Hannigan, Elizabeth Claire Corfield, Ole A. Andreassen, Frank Dudbridge, Eivind Ystrøm, Alexandra Havdahl, Jean-Baptiste Pingault, (2024). Examining intergenerational risk factors for conduct problems using polygenic scores in the Norwegian Mother, Father and Child Cohort Study. Molecular Psychiatry s. 951-961. doi: 10.1038/s41380-023-02383-7
- Ziada Ayorech, Fartein Ask Torvik, Rosa Cheesman, Espen M. Eilertsen, Mathias Valstad, Ludvig Daae Bjørndal, Espen Røysamb, Alexandra Havdahl, Eivind Ystrøm, (2024). The structure of psychiatric comorbidity without selection and assortative mating. Translational Psychiatry s. 1-9. doi: 10.1038/s41398-024-02768-4
- Berit Skretting Solberg, Liv Grimstvedt Kvalvik, Johanne Telnes Instanes, Catharina A. Hartman, Kari Klungsøyr, Lin Li, Henrik Larsson, Per Minor Magnus, Pål Rasmus Njølstad, Stefan Johansson, Ole Andreassen, Nora Refsum Bakken, Mona Bekkhus, Chloe Austerberry, Dinka Smajlagic, Alexandra Havdahl, Elizabeth Claire Corfield, Jan Haavik, Rolf Gjestad, Tetyana Zayats, (2023). Maternal Fiber Intake During Pregnancy and Development of Attention-Deficit/Hyperactivity Disorder Symptoms Across Childhood: The Norwegian Mother, Father, and Child Cohort Study. Biological Psychiatry s. 839-848. doi: 10.1016/j.biopsych.2023.12.017
- Laura Hegemann, Ragna Bugge Askeland, Stian Barbo Valand, Anne-Siri Øyen, Synnve Schjølberg, Vanessa H Bal, Somer L Bishop, Camilla Stoltenberg, Tilmann von Soest, Laurie John Hannigan, Alexandra Havdahl, (2023). Measuring autism-associated traits in the general population: Factor structure and measurement invariance across sex and diagnosis status of the Social Communication Questionnaire. Autism doi: 10.1177/13623613231219306
- Nora R. Bakken, Nadine Parker, Laurie J. Hannigan, Espen Hagen, Pravesh Parekh, Alexey Shadrin, Piotr Pawel Jaholkowski, Evgeniia Frei, Viktoria Birkenæs, Guy Frederick Lanyon Hindley, Laura Hegemann, Elizabeth Claire Corfield, Martin Steen Tesli, Alexandra Havdahl, Ole Andreassen, (2023). Childhood trajectories of emotional and behavioral difficulties are related to polygenic liability for mood and anxiety disorders. medRxiv doi: 10.1101/2023.11.21.23298804
- Alvaro Hernaez Camba, Yunsung Lee, Christian Magnus Page, Karoline Hansen Skåra, Siri Eldevik Håberg, Per Minor Magnus, Pål Rasmus Njølstad, Ole Andreassen, Elizabeth Claire Corfield, Alexandra Havdahl, Abigail Fraser, Stephen Burgess, Deborah A. Lawlor, Maria Christine Magnus, (2023). Impaired glucose tolerance and cardiovascular risk factors in relation to infertility: A Mendelian randomization analysis in the Norwegian Mother, Father, and Child Cohort Study. Human Reproduction s. 436-441. doi: 10.1093/humrep/dead234
- Laurence J Howe, Humaira Rasheed, Paul Remy Jones, Dorret I Boomsma, David M Evans, Alexandros Giannelis, Caroline Hayward, John L Hopper, Amanda Hughes, Hannu Lahtinen, Shuai Li, Penelope A Lind, Nicholas G Martin, Pekka Martikainen, Sarah E Medland, Tim T Morris, Michel G Nivard, Jean-Baptiste Pingault, Karri Silventoinen, Jennifer A Smith, Emily A Willoughby, James F Wilson, Rafael Ahlskog, Ole Andreassen, Helga Ask, Archie Campbell, Rosa Catherine Gillespie Cheesman, Yoonsu Cho, Kaare Christensen, Elizabeth Claire Corfield, Christina C. Dahm, Alexandra Havdahl, William D Hill, Shona M Kerr, Marianne Rodriguez Nygaard, Teemu Palviainen, Nancy L Pedersen, Robert Plomin, Melissa C Southey, Camilla Stoltenberg, Bjørn Olav Åsvold, Øyvind Erik Næss, George Davey Smith, Jaakko Kaprio, Ben Michael Brumpton, Neil Martin Davies, (2023). Educational attainment, health outcomes and mortality: a within-sibship Mendelian randomization study. International Journal of Epidemiology s. 1579-1591. doi: 10.1093/ije/dyad079
- Thomas Haarklau Kleppestø, Espen Moen Eilertsen, Elsje van Bergen, Hans Fredrik Sunde, Brendan Zietsch, Magnus Nordmo, Nikolai Haahjem Eftedal, Alexandra Karoline Saasen Havdahl, Eivind Ystrøm, Fartein Ask Torvik, (2023). Intergenerational transmission of ADHD behaviors: Genetic and environmental pathways. Psychological Medicine s. 1309-1317. doi: 10.1017/S003329172300315X
- Shannon D'Urso, Gunn-Helen Øiseth Moen, Liang-Dar Hwang, Laurie John Hannigan, Elizabeth Claire Corfield, Helga Ask, Stefan Johansson, Pål Rasmus Njølstad, Robin N. Beaumont, Rachel M. Freathy, David M. Evens, Alexandra Havdahl, (2023). Intrauterine Growth and Offspring Neurodevelopmental Traits A Mendelian Randomization Analysis of the Norwegian Mother, Father and Child Cohort Study (MoBa). JAMA psychiatry s. 144-156. doi: 10.1001/jamapsychiatry.2023.3872
- Jerry Guintivano, Enda M. Byrne, Jacqueline Kiewa, Shuyang Yao, Anna E. Bauer, Karolina A. Aberg, Mark J. Adams, Archie Campbell, Megan L. Campbell, Karmel W. Choi, Elizabeth Claire Corfield, Alexandra Havdahl, Donald Hucks, Nastassja Koen, Yi Lu, Merete L. Mægbæk, Jimmy Mullaert, Roseann E. Peterson, Laura M. Raffield, Hannah M. Sallis, Julia M. Sealock, Alicia Walker, Hunna J. Watson, Ying Xiong, Jessica M.K. Yang, Richard J.L. Anney, Katherine Gordon-Smith, Leon Hubbard, Lisa A. Jones, Raluca Mihaescu, Mette Nyegaard, Antonio F. Pardiñas, Amy Perry, Nazmus Saquib, Aladdin H. Shadyab, Alexander Viktorin, Ole Andreassen, Tim B. Bigdeli, Lea K. Davis, Cindy-Lee Dennis, Arianna Di Florio, Caroline Dubertret, Yen-Chen A. Feng, Benicio N. Frey, Sophie Grigoriadis, Emilie Gloaguen, Ian Jones, James L. Kennedy, Holly Krohn, Theodora Kunovac Kallak, Yun Li, Nicholas G. Martin, Andrew M. McIntosh, Jeannette Milgrom, Trine Munk-Olsen, Tim Oberlander, Catherine M. Olsen, Nicolas Ramoz, Ted Reichborn-Kjennerud, Emma Robertson Blackmore, David Rubinow, Alkistis Skalkidou, Jordan W. Smoller, Dan J. Stein, Zachary N. Stowe, Valerie Taylor, Sarah Tebeka, Martin Steen Tesli, Ryan J. Van Lieshout, Edwin J.C.G. van den Oord, Simone N. Vigod, Thomas Werge, Lars Tjelta Westlye, David C. Whiteman, Heather J. Zar, Naomi R. Wray, Samantha Meltzer-Brody, Patrick Sullivan, (2023). Meta-Analyses of Genome-Wide Association Studies for Postpartum Depression. American Journal of Psychiatry s. 884-895. doi: 10.1176/appi.ajp.20230053
- Laurie Hannigan, Ingunn Olea Lund, Jo Adrian Dahl Askelund, Eivind Ystrøm, Elizabeth Claire Corfield, Helga Ask, Alexandra Havdahl, (2023). Genotype-environment interplay in associations between maternal drinking and offspring emotional and behavioral problems. Psychological Medicine s. 203-214. doi: 10.1017/S0033291723003057
- Lia Ferschmann, Ingrid Overweg, Fanny Dégeilh, Mona Bekkhus, Alexandra Havdahl, Tilmann Martin von Soest, Christian Krog Tamnes, (2023). Development of prosocial behavior and inhibitory control in late childhood: A longitudinal exploration of sex differences and reciprocal relations. Child Development s. 313-323. doi: 10.1111/cdev.13978
- Adrian Dahl Askelund, Helga Ask, Eivind Ystrøm, Alexandra Havdahl, Laurie John Hannigan, (2023). Exploring the differentiation of behavioural and emotional problems across childhood: A prospective longitudinal cohort study. JCPP Advances s. 1-11. doi: 10.1002/jcv2.12176
- Ragna Bugge Askeland, Laurie John Hannigan, Kevin Sean O'Connell, Elizabeth Claire Corfield, Oleksandr Frei, Anita Thapar, George Davey Smith, Ted Reichborn-Kjennerud, Ole Andreassen, Helga Ask, Alexandra Havdahl, (2023). Developmental manifestations of polygenic risk for bipolar disorder from infancy to middle childhood. Translational Psychiatry doi: 10.1038/s41398-023-02522-2
- Laura Elizabeth Hegemann, Alexandra Havdahl, Laurie John Hannigan, (2024). Etiology of Neurodevelopmental Traits: Measurement, Specificity, and Within-Family Transmission. .
- Laura Hegemann, Espen Moen Eilertsen, Johanne Hagen Pettersen, Elizabeth Claire Corfield, Rosa Catherine Gillespie Cheesman, Leonard Frach, Ludvig Daae Bjørndal, Helga Ask, Beate St Pourcain, Alexandra Havdahl, Laurie John Hannigan, (2024). Direct and Indirect Genetic Effects on Early Neurodevelopmental Traits.
- Alexandra Havdahl, (2025). Wolfson lectures: Avoidant and restrictive eating difficulties in childhood.
- Wold Gry, Alexandra Havdahl, (2025). Autisme: Ny studie gir håp.
- Qiyuan Peng, Cornelius A. Rietveld, Rosa Catherine Gillespie Cheesman, Eivind Ystrøm, Alexandra Havdahl, (2024). Causal Intergenerational Transmission of Education: How Do Parents Affect Children’s Educational Achievement?.
- Qiyuan Peng, Espen Moen Eilertsen, Rosa Catherine Gillespie Cheesman, Cornelius A. Rietveld, Eivind Ystrøm, Alexandra Havdahl, (2024). Parental Influence on Children's Educational Achievements: Analyzing Direct and Indirect Genetic Effects through Trio-GCTA.
- Johanne Hagen Pettersen, Espen Moen Eilertsen, Laura Hegemann, Laurie John Hannigan, Ingunn Olea Lund, Pia Jensen, Elizabeth Claire Corfield, Eivind Ystrøm, Ole Andreassen, Alexandra Havdahl, Ragnhild Eek Brandlistuen, Helga Ask, (2024). Direct and indirect genetic inluences on mental distress in mother-father-offspring trios during the Covid-19 lockdown.
- Ingvild Edvardsen, Einar Aasen Tryti, Alexandra Havdahl, Hanna Friis Steen, (2024). Barn av innvandrere får oftere autismediagnose. NRK.no
- Ralph Pascual Ortiz Porneso, Espen Moen Eilertsen, Alexandra Havdahl, Eivind Ystrøm, (2024). Non-additive genetic effects in academic performance.
- Ralph Pascual Ortiz Porneso, Espen Moen Eilertsen, Alexandra Havdahl, Eivind Ystrøm, (2024). Identifying genetic variants with non-additive and time-varying effects using longitudinal data.
- Ralph Pascual Ortiz Porneso, Espen Moen Eilertsen, Alexandra Havdahl, Eivind Ystrøm, (2024). Non-additive genetic effects in academic performance.
- Ralph Pascual Ortiz Porneso, Espen Moen Eilertsen, Alexandra Havdahl, Eivind Ystrøm, (2024). Identifying genetic variants with non-additive and time-varying genetic effects using longitudinal data.
- Mathias Valstad, Espen Moen Eilertsen, Rosa Catherine Gillespie Cheesman, Ziada Ayorech, Perline Aline Delle Demange, Nikolai Haahjem Eftedal, Alexandra Havdahl, Eivind Ystrøm, (2024). Indirect genetic effects of siblings.
- Adrian Dahl Askelund, Robyn E Wootton, Fartein Ask Torvik, Rebecca B. Lawn, Helga Ask, Elizabeth Claire Corfield, Maria Christine Magnus, Ted Reichborn-Kjennerud, Per Minor Magnus, Ole Andreassen, Camilla Stoltenberg, George Davey Smith, Neil M. Davies, Alexandra Havdahl, Laurie John Hannigan, (2024). Assessing causal links between age at menarche and adolescent mental health: triangulation of evidence from a Registered Report.
- Alexandra Havdahl, (2024). Muligheter for medvirkning i forskning.
- Alexandra Havdahl, (2024). Nevrodivergens, autisme, gjenkjenning, utredning og diagnostisering og betydningen av interseksjonalitet.
- Alexandra Havdahl, (2024). Tidlig oppdagelse og oppfølging – forskjeller i tjenestetilbud.
- Alexandra Havdahl, (2024). Brukermedvirkning i forskning.
- Alexandra Havdahl, (2024). Hva vet vi om økt forekomst av autismespekterdiagnose i Norge? .
- Alexandra Havdahl, (2024). Medvirkning og medforskning i PsychGen ved FHI i samarbeid med Autismeforeningen.
- Alexandra Havdahl, (2024). Medvirkning og medforskning i PsychGen Senter ved FHI og Lovisenberg Diakonale Sykehus.
- Rosa Catherine Gillespie Cheesman, Ville Anapaz, Sjoerd van Alten, Abdel Abdellaoui, Joakim Coleman Ebeltoft, Ralph Pascual Ortiz Porneso, Ziada Ayorech, Perline Demange, Espen Moen Eilertsen, Agnes Fauske, Alexandra Havdahl, Hannu Lahtinen, Torkild Hovde Lyngstad, Qi Qin, Andrea Ganna, Eivind Ystrøm, (2024). The Genetics of Educational Fields.
- Laura Hegemann, Espen Moen Eilertsen, Johanne Hagen Pettersen, Elizabeth Claire Corfield, Rosa Catherine Gillespie Cheesman, Leonard Frach, Ludvig Daae Bjørndal, Helga Ask, Beate St Pourcain, Alexandra Havdahl, Laurie John Hannigan, (2024). Direct and Indirect Genetic Effects on Early Neurodevelopmental Traits (updated results).
- Helga Ask, Ingunn Olea Lund, Alexandra Havdahl, (2024). Hva forsker vi på i PsychGen-senteret - og hvordan skal vi inkludere brukere?.
- Bernt Damian Glaser, Meseret Mamo Bazezew, Laurie Hannigan, Daniela Bragantini, Stian Orm, Morgan Morgan, Alexandra Havdahl, (2024). Age of autism diagnosis and family wellbeing: exploring the association and its confounding factors in the MoBa cohort..
- Anastasia Izotova, Line Indrevoll Stänicke, Becky Mars, Laurie Hannigan, Helga Ask, Kim Stene-Larsen, George Davey-Smith, Anne Reneflot, Anne-Siri Øyen, Alexandra Havdahl, Robyn Wootton, (2024). Characterising Early Childhood Self-harm in the Norwegian Mother, Father and Child Cohort Study (MoBa).
- Qiyuan Peng, Espen Moen Eilertsen, Rosa Catherine Gillespie Cheesman, Cornelius A. Rietveld, Eivind Ystrøm, Alexandra Havdahl, (2024). Parental Influence on Children's Educational Achievements: Analyzing Direct and Indirect Genetic Effects through Trio-GCTA.
- Qiyuan Peng, Espen Moen Eilertsen, Rosa Catherine Gillespie Cheesman, Cornelius A. Rietveld, Eivind Ystrøm, Alexandra Havdahl, (2024). Parental Influence on Children's Educational Achievements: Analyzing Direct and Indirect Genetic Effects through Trio-GCTA.
- Robyn E Wootton, Adrian Dahl Askelund, Michael Lawton, Kate Tilling, Alexandra Havdahl, (2024). Combining Mendelian randomisation with depression trajectories to identify developmentally specific predictors of change in depressive symptoms.
- Robyn E Wootton, Adrian Dahl Askelund, Michael Lawton, Kate Tilling, Alexandra Havdahl, (2024). Using Mendelian randomisation to identify predictors of depression trajectories from adolescence to early adulthood.
- Viktoria Birkenæs, Pravesh Parekh, Ole Andreassen, Alexandra Havdahl, Ida Elken Sønderby, (2024). Predicting first-episode psychosis using polygenic risk and longitudinal child and adolescent phenotypes.
- Elizabeth Claire Corfield, Laurie John Hannigan, Ted Reichborn-Kjennerud, Helga Ask, Alexandra Havdahl, (2024). Investigating the relationship between sleep phenotypes and neurodevelopmental conditions in the Norwegian Mother, Father, and Child Cohort Study (MoBa).
- Ingunn Olea Lund, Laurie Hannigan, Helga Ask, Jo Adrian Dahl Askelund, Laura Hegemann, Elizabeth Claire Corfield, Robyn Wootton, Yasmin Ahmadzadeh, George Davey smith, Tom A. McAdams, Eivind Ystrøm, Alexandra Havdahl, (2024). Triangulation in research.
- Ingunn Olea Lund, Pia Jensen, Christian Madsen, Lars Johan Hauge, Alexandra Havdahl, Anne Reneflot, Ragnhild Eek Brandlistuen, Helga Ask, (2024). Age-group variations in patterns of psychiatric healthcare utilization during the pandemic among children and adolescents with pre-existing diagnoses.
- Laurie J. Hannigan, Ingunn Olea Lund, Jo Adrian Dahl Askelund, Eivind Ystrøm, Elizabeth Claire Corfield, Helga Ask, Alexandra Havdahl, (2023). Genotype–environment interplay in associations between maternal drinking and offspring emotional and behavioral problems – CORRIGENDUM. Psychological Medicine doi: 10.1017/S0033291723003483
- Alexandra Havdahl, Per Anders Todal, (2023). Ingen alarm frå forskingsfronten.
- Ziada Ayorech, Rosa Catherine Gillespie Cheesman, Espen Moen Eilertsen, Alexandra Havdahl, Eivind Ystrøm, (2023). Family-based approaches to gene-environment interplay.
- Ziada Ayorech, Rosa Catherine Gillespie Cheesman, Espen Moen Eilertsen, Alexandra Havdahl, Eivind Ystrøm, (2023). The genetics of depression across the childbearing years.
- Ziada Ayorech, Neil Davies, George Davey Smith, Hunna J Watson, Zeynep Yilmaz, Cynthia M Bulik, Ole Andreassen, Pål Rasmus Njølstad, Laurie John Hannigan, Martin Steen Tesli, Ragna Bugge Askeland, Ted Reichborn-Kjennerud, Helga Ask, Eivind Ystrøm, Alexandra Havdahl, (2023). Causal risk factors for childhood eating behaviours and adulthood anorexia nervosa. A between and within family Mendelian randomisation study.
- Ziada Ayorech, Fartein Ask Torvik, Rosa Catherine Gillespie Cheesman, Espen Moen Eilertsen, Mathias Valstad, Ludvig Daae Bjørndal, Espen Røysamb, Alexandra Havdahl, Eivind Ystrøm, (2023). Leveraging family data can reveal the role of selection bias in genomic research.
- Yunsung Lee, Miriam Gjerdevik, Astanand Jugessur, Håkon Kristian Gjessing, Elizabeth Claire Corfield, Alexandra Havdahl, Jennifer Ruth Harris, Maria Christine Magnus, Siri Eldevik Håberg, Per Minor Magnus, (2023). Parent-of-origin effects on childhood asthma.
- André Høberg, Berit Skretting Solberg, Jan Haavik, Dinka Smajlagic, Alexandra Havdahl, Mona Bekkhus, Elizabeth Claire Corfield, Tetyana Zayats, (2023). Genetically Informed Early Identification of Attention Deficit Hyperactivity Disorder Symptoms in the Norwegian Mother, Father and Child Cohort Study (MoBa).
- Elizabeth Claire Corfield, Laurie John Hannigan, Ted Reichborn-Kjennerud, Helga Ask, Alexandra Havdahl, (2023). Investigating the Relationship between Sleep Phenotypes and Neurodevelopmental Conditions in Children and Adolescents from the Norwegian Mother, Father, and Child Cohort Study (MoBa).
- Laura Hegemann, Ragna Bugge Askeland, Stian Barbo Valand, Anne-Siri Øyen, Synnve Schjølberg, Vanessa Hus Bal, Somer L Bishop, Camilla Stoltenberg, Tilmann Martin von Soest, Laurie John Hannigan, Alexandra Havdahl, (2023). Measuring Autism-Associated Traits in the General Population: Factor Structure and Measurement Invariance across Sex and Diagnostic Status in the Social Communication Questionnaire.
- Laura Hegemann, Elizabeth Claire Corfield, Espen Moen Eilertsen, Rosa Catherine Gillespie Cheesman, Helga Ask, Laurie John Hannigan, Alexandra Havdahl, (2023). Indirect and Direct Genetic Effects in Early Neurodevelopmental Traits.
- Viktoria Birkenæs, Alexey Shadrin, Pravesh Parekh, Evgeniia Frei, Alexandra Havdahl, Ole Andreassen, Ida Elken Sønderby, (2023). Self-Reported Psychotic Experiences: Does an Unreliable Phenotypic Measure Introduce Bias in Genetic Associations?.
- Viktoria Birkenæs, Alexey Shadrin, Evgeniia Frei, Pravesh Parekh, Piotr Pawel Jaholkowski, Olav Bjerkehagen Smeland, Alexandra Havdahl, Ole Andreassen, Ida Elken Sønderby, (2023). Genome-Wide Analysis of Self-Reported Psychotic Experiences in the Norwegian Mother, Father, and Child study.
- Laurie John Hannigan, Martin Steen Tesli, Elizabeth Claire Corfield, Daniela Bragantini, Laura Hegemann, Ole Andreassen, Helga Ask, Alexandra Havdahl, (2023). Genetic overlap between ADHD and cardiometabolic traits: an investigation in MoBa using polygenic transmission disequilibrium analyses.
- Adrian Dahl Askelund, Laura Hegemann, Elizabeth Claire Corfield, Eivind Ystrøm, Helga Ask, Alexandra Havdahl, Laurie John Hannigan, (2023). Genetic and environmental factors associated with differentiation between behavioural and emotional problems across early life.
- Ingunn Olea Lund, Laurie Hannigan, Helga Ask, Jo Adrian Dahl Askelund, Laura Hegemann, Elizabeth Claire Corfield, Robyn Wootton, George Davey smith, Tom A. McAdams, Eivind Ystrøm, Alexandra Havdahl, (2023). PRENATAL MATERNAL STRESS: TRIANGULATING EVIDENCE FOR INTRAUTERINE EXPOSURE EFFECTS ON BIRTH AND EARLY CHILDHOOD OUTCOMES ACROSS MULTIPLE APPROACHES.
- Ingunn Olea Lund, Laurie Hannigan, Helga Ask, Jo Adrian Dahl Askelund, Laura Hegemann, Elizabeth Claire Corfield, Robyn Wootton, George Davey smith, Tom A. McAdams, Eivind Ystrøm, Alexandra Havdahl, (2023). Prenatal maternal stress: triangulating evidence for intrauterine exposure effects on birth and early childhood outcomes across multiple approaches.
- Johanne Hagen Pettersen, Laura Hegemann, Kristin Gustavson, Ingunn Olea Lund, Pia Jensen, Ragnar Nesvåg, Alexandra Havdahl, Ragnhild Eek Brandlistuen, Laurie John Hannigan, Helga Ask, (2023). Eating problems among adolescents before and during the Covid-19 pandemic.
- Johanne Hagen Pettersen, Laura Hegemann, Kristin Gustavson, Ingunn Olea Lund, Pia Jensen, Ragnar Nesvåg, Alexandra Havdahl, Ragnhild Eek Brandlistuen, Laurie John Hannigan, Helga Ask, (2023). Eating problems among adolescents before and during the Covid-19 pandemic.