Siste publikasjoner

• Kvale, Knut; Larsen, Anna Grøndahl; Følstad, Asbjørn & as, Nena van (2026). CUSTOMER CARE IN THE AGE OF AI: CURRENT PERCEPTIONS AND FUTURE EXPECTATIONS. IADIS International Journal on Computer Science and Information System. Fulltekst i vitenarkiv
• Kowalski, Joachim; Dąbkowska, Małgorzata; Aleksandrowicz, Adrianna; Jarkiewicz, Michał; Larøi, Frank & Gawęda, Łukasz (2026). Examining Auditory Hallucinations and Attention in Schizophrenia Patients According to the Metacognitive Model. Schizophrenia Bulletin. ISSN 0586-7614. 52(5). doi: 10.1093/schbul/sbaf208. Fulltekst i vitenarkiv
• Caspi, Avshalom; Houts, Renate M.; Anker, Anne Sofie Tegner; Richmond-Rakerd, Leah S.; Andersen, Signe Hald & Moffitt, Terrie E. [Vis alle 7 forfattere av denne artikkelen] (2026). What does psychopathology research have to gain by studying all mental disorders at the same time? Journal of Psychopathology and Clinical Science. ISSN 2769-7541. 135(4), s. 537–543. doi: 10.1037/abn0001136. Fulltekst i vitenarkiv
• Xia, Lihua; Ren, Kang; Demetriou, Ina; Gurunandan, Kshipra; Meeker, Karin L. & Pineiro, Didac Vidal [Vis alle 8 forfattere av denne artikkelen] (2026). Bilingualism and cognitive aging in ethnically diverse older adults: cross-sectional and longitudinal evidence from Health and Aging Brain Study—Health Disparities. The journals of gerontology. Series B, Psychological sciences and social sciences. ISSN 1079-5014. 81(10), s. 1–10. doi: 10.1093/geronb/gbag150. Fulltekst i vitenarkiv
• Hesselberg, Jan Ole; Ulleberg, Pål; Sørensen, Øystein; Fostervold, Knut Inge; Ingvaldsen, Sigrid Hegna & Svege, Ida (2026). Why do reviewers disagree? Evidence from four funders and 134,000 reviews. PLOS ONE. 21(9), s. 1–21. doi: 10.1371/journal.pone.0356108. Fulltekst i vitenarkiv
• Getz, Vilde; Pleym, Karin; Dammen, Toril; Husebye, Einar; Sverre, Elise Christine Bjørkholen & Peersen, Kari [Vis alle 9 forfattere av denne artikkelen] (2026). Patient and healthcare system factors associated with participation in municipal smoking cessation programs after hospitalization for atherosclerotic vascular disease in Norway: A prespecified analysis of two randomized controlled trials. Tobacco Prevention & Cessation. 12(61), s. 1–13. doi: 10.18332/tpc/236282. Fulltekst i vitenarkiv Vis sammendrag

  Introduction: Persistent smoking after hospitalization for an atherosclerotic vascular event remains common, and only a small proportion attend cardiac rehabilitation or community-based lifestyle support, including smoking cessation programs. This study aimed to identify patient and healthcare...

• Kyte, Eli B.; Helmstaedter, Christoph; Skogan, Annette Holth; Lossius, Morten Ingvar & Alfstad, Kristin Åshild (2026). How far-reaching is the impact of temporal lobe epilepsy surgery on quality of life 10–44 years after the operation? Epilepsy & Behavior. ISSN 1525-5050. 185. doi: 10.1016/j.yebeh.2026.111272. Fulltekst i vitenarkiv
• Benningstad, Nora Cornelia Glerud; Obaidi, Milan; Anjum, Gulnaz & Kunst, Jonas R. (2026). An integrated model of climate and environmental pathways to violent extremism. Global Environmental Change. ISSN 0959-3780. 101, s. 103240–103240. doi: 10.1016/j.gloenvcha.2026.103240. Fulltekst i vitenarkiv
• Bazezew, Meseret Mamo; Glaser, Ben; Hegemann, Laura Elizabeth; Askelund, Adrian Dahl; Pingault, Jean-Baptiste & Wootton, Robyn [Vis alle 10 forfattere av denne artikkelen] (2026). Estimating direct and indirect genetic effects on emerging variation in depressive symptoms in early adolescence: a trio polygenic score analysis in the MoBa cohort. European Child and Adolescent Psychiatry. ISSN 1018-8827. doi: 10.1007/s00787-026-03197-y. Fulltekst i vitenarkiv Vis sammendrag

  Abstract Early adolescence is a common period of onset for depressive symptoms. In part, this may reflect a developmental expression of individuals’ genetic propensities as they undergo physiological and hormonal changes and interact with new environments. Many commonly proposed mechanisms assume direct effects of an individual’s own genes on emerging variation in their depressive symptomatology. However, estimates of genetic influence based on analyses in unrelated individuals capture not only direct genetic effects but also genetic effects from parents and other biologically related family members. In data from the Norwegian Mother, Father and Child Cohort (MoBa), we used linear mixed models to distinguish developmentally-stable and adolescence-specific direct and parental indirect genetic effects. In within-family models, we examined effects of polygenic scores for major depressive disorder (MDD), ADHD, anxiety disorders, and educational attainment (EA) on depressive symptoms measured at ages 8 and 14. Children’s own MDD polygenic scores showed adolescence-specific effects on depressive symptoms (β PGS*wave =0.041, [95% CI: 0.017, 0.065]). Developmentally-stable direct effects from children’s polygenic scores for MDD (β = 0.016, [0.006, 0.039]), ADHD (β = 0.024, [0.008, 0.041]) and EA (β=-0.02, [ -0.038, -0.002]) were also evident. The only evidence of indirect genetic effects was a stable effect of maternal EA polygenic scores (β = 0.04, [0.024, 0.054]). Direct genetic effects linked to genetic liability to MDD accounted for emerging variation in depressive symptoms in adolescence. These results imply that specific etiological mechanisms related to MDD may become particularly relevant for depressive symptoms during early adolescence compared to at earlier ages.

• Sirotina, Ulyana; Bjarnadottir, Bryndis Lara; Butwicka, Agnieszka; Ystrom, Eivind; Suvisaari, Jaana & Kiviruusu, Olli [Vis alle 11 forfattere av denne artikkelen] (2026). Mental health and healthcare use during COVID‐19 among neurodivergent youth and youth with pre‐existing psychiatric disorders: A systematic review. JCPP Advances. doi: 10.1002/jcv2.70176. Fulltekst i vitenarkiv Vis sammendrag

  Abstract Background Neurodivergent youth and youth with pre‐existing psychiatric disorders may have faced additional challenges in navigating the demands and restrictions of the COVID‐19 pandemic. However, less is known about how mental health outcomes and psychiatric healthcare utilization differed across diagnostic groups and other youth‐related factors. This systematic review synthesizes evidence on mental health symptoms and psychiatric healthcare use among youth with pre‐existing conditions during the pandemic. Methods We searched PubMed, Web of Science and additional sources for cross‐sectional and longitudinal studies with data collected between March 2020 and May 2023. Eligible studies included neurodivergent youth and/or youth with psychiatric disorders confirmed through clinician diagnosis or medical records prior to the pandemic. Given the clinical and methodological diversity of studies, findings were synthesized narratively. Results Forty‐eight studies met the inclusion criteria. Mental health outcomes showed mixed patterns both across and within diagnostic groups, with individual studies reporting symptom increase, stability and improvements. Evidence on psychiatric healthcare utilization was more limited and suggested different patterns between service use and psychotropic medication use. Compared to boys, girls were more likely to experience COVID‐related distress and increases in psychiatric service use during the pandemic. Age‐related findings varied across developmental stages and outcome domains. Most studies ( n  = 40; 83.3%) had a moderate overall risk of bias (RoB), while seven (14.6%) had a high overall RoB. Conclusion Mental health outcomes among youth with pre‐existing conditions during the COVID‐19 pandemic varied both within and across diagnostic groups. Outcomes were also associated with individual, developmental, contextual and service‐related factors. These findings suggest the importance of considering such factors alongside diagnosis when identifying clinical needs and planning support during large‐scale societal disruptions. Evidence on psychiatric healthcare utilization remains limited. More methodologically robust research is needed to clarify mental health and healthcare‐use patterns during major public health emergencies.

• Glastad, Stine Holmstul; Klungsøyr, Ole; Aminoff, Sofie Ragnhild; Hagen, Roger; Bjella, Thomas & Engen, Magnus Johan [Vis alle 11 forfattere av denne artikkelen] (2026). Frequency analysis of mood, sleep, and alcohol and nicotine use: investigating instability in bipolar I and II disorder. Frontiers in Psychiatry. 17, s. 1–12. doi: 10.3389/fpsyt.2026.1810743.
• Kentistou, Katherine A.; Sundfjord, Jonas; Karimi, Roya; Kaisinger, Lena R.; Hofmeister, Robin J. & Bargas, Nicolas Fragoso [Vis alle 31 forfattere av denne artikkelen] (2026). Genome-wide mapping of common and rare variant effects on adiposity across childhood. Nature Genetics. ISSN 1061-4036. doi: 10.1038/s41588-026-02772-y. Fulltekst i vitenarkiv Vis sammendrag

  Our understanding of the genetic architecture of obesity is primarily based on studies of adults, with sparser data from childhood. Here, we conducted age-stratified genetic association studies against objectively measured ( n  = 62,276) or recalled childhood adiposity-related traits ( n eff  = 599,924), identifying 624 common variants associated with childhood adiposity, with one-third having no concordant association with adult body mass index. Signals linked to the leptin–melanocortin pathway ( BSX , GNAS , LEPR and PCSK1 ) and incretin signaling ( GIPR and GLP1R ) showed childhood-specific effects on adiposity. Single-nucleus RNA sequencing data identified childhood-specific adiposity-regulating cell populations in the arcuate nucleus and mammillary bodies, indicating neurocircuits that regulate adiposity specifically during childhood. Finally, sequencing in 479,615 individuals uncovered rare protein-coding variation in ADCY3 , CALCR , MC4R , MRAP2 , POMC and MYH13 , exhibiting stronger associations in childhood than in adults. Our findings suggest that childhood provides a more sensitive window for the study of key endocrine and neuropeptide pathways that regulate energy balance.

• Manokara, Kunalan; Teulings, Irene; Cong, YongQi; Kamiloğlu, Roza; Fischer, Agneta H. & Sauter, Disa A. (2026). More than just smiling: how positive emotions are expressed on the face. Philosophical Transactions of the Royal Society of London. Biological Sciences. ISSN 0962-8436. 381(1959). doi: 10.1098/rstb.2025.0133. Fulltekst i vitenarkiv Vis sammendrag

  To advance the science of positive emotional expressions, we test how 22 positive emotions are spontaneously displayed on the face, using the participant-negotiated episodic recall method. Respondents (n = 163) narrated emotional events from their lives, and we extracted facial behaviours that reflected peak expressivity (35 410 facial actions). Network models were applied to probe whether specific positive emotions would be conditionally associated with particular facial behaviours. Our results point to three sets of positive emotions: five that do not seem to have specific facial actions related to them (e.g. admiration), nine whose expressions do not significantly involve smiling (e.g. head turn for interest, raised chin for determination), and eight whose facial expressions include smiling as a unique expressive feature (e.g. positive surprise and elation). Notably, nine of these positive emotions had expressive patterns that were distinct from the other emotions in our set (e.g. raised cheeks and closed eyes for sexual desire), while eight emotions were associated with expressive patterns that were shared in pairs (e.g. raised eyebrows for both hope and inspiration). These results provide a tentative map of what specific positive emotions look like when produced on the face in a naturalistic situation. This article is part of the theme issue ‘Mechanisms, development, phylogeny and functions of emotional expressions’.

• Teulings, Irene J. E. & Sun, Rui (2026). Gratitude and well-being: A robust relationship across individual differences, but moderated by cultural and contextual factors. Emotion. ISSN 1528-3542. doi: 10.1037/emo0001699. Fulltekst i vitenarkiv Vis sammendrag

  Gratitude is a key contributor to well-being, yet the roles of individual factors such as age, gender, and socioeconomic status in this relationship remain unclear. In addition, little is known about whether this relationship varies across cultural and societal contexts. Across three studies (total N= 220,204; 67 countries) using cross-sectional data, we show that well-being is closely tied to gratitude experiences, with no meaningful universal individual differences across age, gender, socioeconomic status, or education. However, we did nd that the strength of this connection varied across countries, which could be explained by various country-level moderators. For instance, the link was weaker in countries with lower national income and more collectivistic values. These patterns establish the strong connection between gratitude and well-being across a wide variety of cultures, but also suggest that gratitude may be less strongly associated with well-being in contexts where resources are scarce. As the rst systematic study to examine the gratitude-well-being relationship across a broad range of individual and contextual differences, these ndings underscore the signi cant role of gratitude in well-being and reveal both the universal as well as the contextually contingent aspects of this connection.

• Torgalsbøen, Anne-Kari (2026). Kliniske og etiske dilemmaer ved fabrikkert forstyrrelse. Journal of the Norwegian Psychological Association. 63, s. 629–635. Fulltekst i vitenarkiv
• Fonn, Erik K.; Zahl, Joakim Haugane; Kristensen, Bjørn D. & Thomsen, Lotte (2026). Gendered motives for group formidability among children and adults. Nature Human Behaviour. doi: 10.1038/s41562-026-02606-1. Fulltekst i vitenarkiv Vis sammendrag

  Recent decades have seen a surge of research revealing the core, early emerging psychological building blocks for navigating human societies. Yet, how such core motives operate across life, undergirding political ideology, remains unknown. Here we use the same kind of minimal, abstract group stimuli across the lifespan to show that gendered preferences for majority groups manifest among preschoolers and adults alike (but not among preverbal infants) and that they motivate support for sustaining intergroup hierarchies (for example, ethnic persecution, militarism and social welfare opposition) among adults. Preschool (N = 317) boys, but not girls, preferred majority rather than minority members, whereas infants (N = 180) chose randomly between the two. Among adults (N = 3,467), males also liked the majority more than females, and these coalitional preferences correlated robustly with political ideology. These results indicate that gendered motives for intergroup formidability are rooted in earliest childhood once children begin navigating peer relationships independently.

• Blandhol, Merethe; Tiseth, Adrian Nicolaisen & Ellingsen, Dan-Mikael (2026). An Ecologically Valid Experimental Model for Repeated Evoked Pain Using a Wearable Device in Pain-Free Individuals: A Pilot Feasibility Study. Pain Research and Management. ISSN 1203-6765. 2026(1). doi: 10.1155/prm/9255164. Fulltekst i vitenarkiv
• Høiland, Kristoffer; Arnevik, Espen Ajo & Egeland, Jens (2026). Alcohol Use Disorder and Bariatric Surgery: An Exploratory Study of Patient Factors. Alcoholism Treatment Quarterly. ISSN 0734-7324. doi: 10.1080/07347324.2026.2735619. Fulltekst i vitenarkiv
• Rohrer-Baumgartner, Nina; Brandt, Reidun; Holthe, Ingvil Laberg; Brunborg, Cathrine; Kendall, Sally & Svendsen, Edel Jannecke [Vis alle 7 forfattere av denne artikkelen] (2026). Validation of the Norwegian Version of the Tool to Measure Parenting Self-Efficacy (TOPSE) Questionnaire in Families With Children and Adolescents With Acquired Brain Injury. Child: Care, Health and Development. ISSN 0305-1862. 52(5), s. 1–10. doi: 10.1111/cch.70348. Fulltekst i vitenarkiv
• Kvalvik, Eirik Haugland; Wang, Yunpeng; Walhovd, Kristine B; Lyngstad, Torkild Hovde & Røgeberg, Ole (2026). Beyond years of schooling: Genetic associations across educational milestones in two Norwegian cohorts. PLoS Genetics. ISSN 1553-7390. 22(9). doi: 10.1371/journal.pgen.1012310. Fulltekst i vitenarkiv Vis sammendrag

  Although educational attainment is heritable, years-of-education (EduYears) measures are not designed to show how genetic associations vary across discrete educational milestones. In the Norwegian Mother, Father and Child Cohort Study (MoBa; N = 120,527) and the Norwegian Twin Registry (N = 8,910), we combined genome-wide association studies (GWAS), polygenic indices (PGIs), and twin models to characterize genetic associations with high-school completion and bachelor’s, master’s, and doctoral attainment. In transition-specific analyses conditional on prior attainment, observed-scale common-variant heritability (h 2 SNP ) and PGI discrimination followed an inverse-U pattern, peaking for progression from high-school completion to attainment of at least a bachelor’s degree (HS → BSc + ; h 2 SNP  ≈ 0.14; R 2 Tjur  ≈ 0.05) and declining at postgraduate transitions. Genetic correlations (r g ) with large-scale GWAS of EduYears (EA4) and intelligence were high at earlier transitions but lower at later ones (for EA4, r g  ≈ 0.92 at HS → BSc+ and ≈ 0.38 at MSc → PhD). In cumulative analyses of attained status in the full cohort, the point-estimate gap between twin- and SNP-based heritability narrowed from ≈ 0.38 at high-school completion to ≈ 0.11 at PhD, while genetic overlap was lower for distant than adjacent milestones (r g  ≈ 0.71 for high-school completion versus PhD and ≈ 0.92 for adjacent milestones). Sensitivity analyses using an alternative intelligence GWAS and additional PGIs showed similar transition-specific trajectories. At the doctoral transition, estimates were obtained among individuals who had attained at least a master’s degree, so attenuation there must be interpreted in light of selection and range restriction. Because EduYears converts distinct credentials and progression steps into a single numerical scale, estimates expressed per additional year should not be interpreted as though one year has the same meaning across the educational sequence. Milestone-preserving analyses make that hidden structure visible and sharpen the interpretation of education GWAS and PGIs.

• Rasiah, Midja; Larsen, Maria Å.; Bernhardt, Ida Stange & Melinder, Annika Maria Désirée (2026). Barnefaglig sakkyndiges opplevelser av å arbeide i skjæringspunktet mellom juss og psykologi. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet). ISSN 0332-6470. doi: 10.52734/XQDA1314. Fulltekst i vitenarkiv
• Kransberg, Jonas Moe; Bråthen, Anne Cecilie Sjøli; Falch, Emilie Sogn; Øverbye, Knut Eiliv Ødegård; Garrido, Pablo F. & Fjell, Anders Martin [Vis alle 10 forfattere av denne artikkelen] (2026). Failure to detect entorhinal grid-like signals in a passive navigation human fMRI study. Imaging Neuroscience. 4. doi: 10.1162/imag.a.1196. Fulltekst i vitenarkiv Vis sammendrag

  Abstract Grid cells in the human entorhinal cortex (EC) play a critical role in spatial navigation and memory. The EC is also one of the first regions affected by ageing and Alzheimer’s disease. This pre-registered functional magnetic resonance imaging (fMRI) study aimed to detect grid-cell-like signals (GLS) in a passive virtual navigation task. Contrary to our hypotheses and previous findings, we did not observe significant GLS at a population level, even in younger participants. Further exploratory analyses investigated the impact of task-engagement, as inferred from object-location memory performance, and showed no relationship with GLS magnitude. We also examined potential influences of a confounding one-fold directional signal and various data-processing choices but observed no consistent patterns. Our findings, consistent with recent null results from similar studies, suggest that passive navigation paradigms may be insufficient for reliably eliciting grid-like signals in human fMRI.

• Kraft, Pål & Kraft, Brage (2026). Hedonic and practicality beliefs form a behaviour-proximal core associated with red and processed meat intake: An attitude network analysis. Appetite. ISSN 0195-6663. 226, s. 1–12. doi: 10.1016/j.appet.2026.108694. Fulltekst i vitenarkiv
• Martikainen, Silja; Karhunen, Oona; Mankki, Iiris; Gergov, Vera; Berg, Päivi & Venäläinen, Satu [Vis alle 17 forfattere av denne artikkelen] (2026). Interventions for Students’ Well-Being at the University of Helsinki (INSIGHT): Protocol and Preliminary Descriptive Results for a Quasi-Experimental Controlled Trial of a Social Identity Intervention and Two Active Comparators. JMIR Research Protocols. 15, s. 1–19. doi: 10.2196/79319.
• Korbmacher, Max; Bøen, Rune; Andreassen, Ole; Westlye, Lars Tjelta; Sønderby, Ida Elken & Maximov, Ivan (2026). White matter microstructure differences between 15q11.2 copy number variation carriers and non-carriers in mid-to-late life. Translational Psychiatry. 16, s. 1–8. doi: 10.1038/s41398-026-03962-2. Fulltekst i vitenarkiv Vis sammendrag

  The 15q11.2 BP1-BP2 copy number variant (CNV) has been associated with neurodevelopmental and psychiatric conditions and brain grey matter structure, but its effects on white matter microstructure (WMM) in mid-to-late adulthood to assess long-term neurobiological effects remain unclear. Understanding these effects is important for evaluating long-term neurobiological impacts across the lifespan. WMM parameters were extracted from UK Biobank diffusion magnetic resonance imaging data for 15q11.2 BP1-BP2 deletion (n = 126, mean age: 66 ± 8) and duplication (n = 131, mean age: 64 ± 7) carriers, as well as age- and sex-matched non-carriers (n = 1260 and n = 1310). We used multiple advanced diffusion approaches, extending beyond DTI, providing metrics on various spatial levels comparing the CNV carriers and non-carriers. All metrics were projected on the WM skeleton for further group comparisons. We present various atlas-derived region-level differences between 15q11.2 BP1-BP2 deletion carriers and non-carriers. These differences suggest altered microstructural organization in the corpus callosum, cingulum and hippocampus, uncinate fasciculus, indicated by lower diffusivity and higher fractional anisotropy, kurtosis, axonal water fraction, and intra-neurite volume fraction (absolute standardized effects > 0.22). Most significant differences across multiple diffusion approaches were detected in the corpus callosum. Our findings suggest that during mid- to-late life, WMM in the corpus callosum is affected by 15q11.2 deletion. Different diffusion approaches allowing for microscopic assessments of WM, beyond previous non-microscopic diffusion MRI based assessments, suggest altered axonal density or microstructural organization, potentially reflecting pathological axonal overgrowth and myelination abnormalities, adding explanations for observable developmental and psychiatric differences between deletion carriers and healthy controls.

• Torgersen, Svenn Omar; Skaug, Eirunn & Waaktaar, Trine (2026). Common and Unique Etiological Influences on Personality and Personality Disorders in Youth. Psychopathology. ISSN 0254-4962. doi: 10.1159/psp/aelag006. Fulltekst i vitenarkiv Vis sammendrag

  Background: Personality and personality disorders (PDs) are closely related constructs, but the nature of their relationship remains uncertain. Dimensional models suggest PDs are extreme manifestations of personality traits. We investigated the etiological links between broad personality factors and dimensional PD factors using quantitative analyses of common and unique genetic and environmental etiological factors affecting both normative and deviant personalities, emphasizing methods to minimize measurement bias. Methods: Seven national twin cohorts participated (N = 2,353 twins from 1,188 families), assessing personality traits with questionnaires across three adolescent waves and PD traits via age-19 clinical interviews. Exploratory factor analyses of personality traits and the three-cluster ABC factors of PDs simplified the factor structure of the measures. Biometric twin analyses with Cholesky modeling identified genetic and environmental links among factors. Results: Factor analysis of personality traits yielded non-resilient, disinhibited, and disaffected factors. PDs fit an emotional/erratic, anxious/fearful, and odd/eccentric factor structure. Phenotypic correlations varied, but the disinhibited factor had minimal relations to specific PD factors. Crucially, approximately one-third of the genetic variance was shared between personality and PDs. However, the majority of genetic variance and all non-shared environmental variance were trait-specific, suggesting predominantly distinct etiological pathways. Conclusion: The significant genetic overlap supports the continuum model; results were bolstered by using broad factors and method triangulation. However, unique genetic and environmental influences point to distinct etiological pathways differentiating personality and PDs. These findings endorse the continuum model yet highlight the need for further research to grasp the complex relationships between personality and PDs.

• Piulats, Francisco Maria Pons; Gavrilova, Margarita & Veraksa, Aleksander (2026). Impact of the COVID-19 lockdown on the development of emotion understanding of children living in a Eurasian collectivistic society (Russia). Frontiers in Developmental Psychology. 4. doi: 10.3389/fdpys.2026.1956317. Fulltekst i vitenarkiv Vis sammendrag

  Background The impact of culture on the development of children's emotion understanding has become an increasingly prominent focus of research. However, one fundamental dimension of culture has so far been almost completely overlooked in this field: history. Objective In this study, we aimed to investigate the potential impact of a major dramatic historical event, the COVID-19 lockdown, on emotion understanding in children living in a Eurasian collectivist society (Russia). Specifically, we asked whether the lockdown influenced children's emotion understanding development and, if so, whether this influence was positive or negative. Design The present study examined the one-year development of emotion understanding in children who experienced a six-month total COVID-19 lockdown (Pandemic sample), compared with children who did not experienced such a lockdown (Control sample). Both samples were community samples of 5–6-year-old children from middle-SES families, drawn from the same city and preschools and matched on age, sex, non-verbal intelligence (Raven), and mother tongue ( N = 673 in total). Children in both samples were assessed twice (at ages 5; 6 and 6; 6 years) for their understanding of a wide range of emotional components using the Russian version of the Test of Emotion Comprehension. Results The lockdown was negatively associated with children's one-year development of emotion understanding. Although children in both samples made developmental gains, improvement in the Control sample was substantial and consistent with typical developmental trajectories, whereas gains in the Pandemic sample were minimal and almost stagnant by comparison. Discussion A possible explanation for these findings is that the lockdown disrupted the virtuous circle between children's emotion understanding and their social interactions, with interactions within the immediate family becoming predominant and those outside the family sharply reduced. We hypothesize that social interactions beyond the immediate family play an important protective role in the development of emotion understanding, and that their prolonged absence may be particularly consequential in collectivistic societies. In this view, restricting children's social interactions to their immediate family could constitute a risk factor for the development of emotion understanding. Limitations and future directions are also discussed (long-term follow-up, direct measures of cultural values and practices, etc.).

• Deilhaug, Elisabeth; Moerkerke, Matthijs; Sartorius, Alina I.; Kang, Heemin; Bull, Emilie Meyer & Walle, Kjersti M. [Vis alle 11 forfattere av denne artikkelen] (2026). Using EEG to Measure the Neural Effects of Oxytocin Administration: A Meta‐Analysis and Systematic Review. Psychophysiology. ISSN 0048-5772. 63(6). doi: 10.1111/psyp.70334. Fulltekst i vitenarkiv Vis sammendrag

  Electroencephalography (EEG) has emerged as a key method for investigating the neural mechanisms through which oxytocin influences cognition and behavior. EEG is cost‐effective, has excellent temporal precision, and may elucidate neural correlates of emotional and cognitive processes. EEG studies evaluating oxytocin's electrophysiological effects have, however, yielded mixed results, which is likely driven by heterogeneity in EEG measures, study designs, dosages, and samples. To investigate the effect of oxytocin administration on EEG measures, we performed two multilevel random effects meta‐analyses: The first meta‐analysis synthesized studies investigating the effects of oxytocin administration on different neural correlates of social and cognitive processing; the second meta‐analysis synthesized studies evaluating effects of oxytocin administration on exploratory, less task‐specific neural activity measures, such as the modulation of microstates. Across both meta‐analyses, we synthesized 161 effect sizes from 28 randomized controlled trials with a total of 1361 participants from different population groups. These multilevel meta‐analyses yielded statistically significant, small effect sizes of oxytocin administration across different EEG measures reflecting social and cognitive processes (Hedges' g  = 0.14), and exploratory neural activity (Hedges' g  = 0.28) with significant heterogeneity estimates ( p  < 0.01 and p  < 0.001, respectively). Moderator analyses revealed that the different EEG measurements of interest (e.g., event‐related potentials) and the proportion of female participants were found to significantly moderate the effect of oxytocin on neural EEG activity. Altogether, these meta‐analyses present tentative evidence for oxytocin administration modulating a wide range of EEG‐based markers of neural activity. We observed substantial heterogeneity across studies—in terms of study designs, experimental paradigms and EEG measurements, and participant characteristics. More research is warranted to map out the context‐specific effects of oxytocin administration on different neural markers, to better understand the neurobiological mechanisms of oxytocin.

Se alle arbeider i NVA

• Ystrom, Eivind; Timpe, Clara Marie Fides & Jole, Oda van (2027). Sosial ulikhet i Norge og barns psykiske utvikling - en megakobling. Fulltekst i vitenarkiv
• Engen, Magnus Johan; Landmark, Anders Flækøy; Råbu, Marit & Vestnes, Einar Johan (2026). Å være seg selv og samtidig mange. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet). ISSN 0332-6470. 10, s. 670–675. doi: https:/www.psykologtidsskriftet.no/artikkel/2026as10ae-A-vare-seg-selv-og-samtidig-mange. Fulltekst i vitenarkiv Vis sammendrag

  https://www.psykologtidsskriftet.no/artikkel/2026as10ae-A-vare-seg-selv-og-samtidig-mange

• Paulsen, Martin; Granum, Siri; Muri, Helene & Landmark, Live (2026). Ytringsklima under press: Hvorfor ytrer akademikere seg sjeldnere enn før. doi: https:/open.spotify.com/episode/01gHTv5WsoB3n0vpepYPm0?si=uMNVlLYhRKyXhwuh8-ymlA. Fulltekst i vitenarkiv
• Pettersen, Johanne Hagen; Bjørndal, Ludvig Daae; Hannigan, Laurie John; Wootton, Robyn; Eek, Brandlistuen Ragnhild & Havdahl, Alexandra [Vis alle 8 forfattere av denne artikkelen] (2026). Anxiety in adolescents born 1999-2009: Temporal trends in diagnosis, symptoms, and expression of genetic liability. Fulltekst i vitenarkiv
• Madsen, Ole Jacob (2026). Rabinowitz 2026: Barnevernet og informasjonskrigen i SoMe | 18. sep. 12:15 | Haugesund folkebibliotek. Fulltekst i vitenarkiv Vis sammendrag

  Barnevernet og informasjonskrigen i sosiale medier

• Madsen, Ole Jacob (2026). Generasjon prestasjon. Fulltekst i vitenarkiv
• Breivik, Ingeborg Christensen & Madsen, Ole Jacob (2026). Rebecca kastet iPhonen: – Du ser livet rase forbi - NRK. [Internet]. NRK. Fulltekst i vitenarkiv Vis sammendrag

  Salget av tastetelefoner skyter fart. Renessansen er mer enn bare en trend, tror psykologen.

• Nordgård, Ann Helen Bjørum & Madsen, Ole Jacob (2026). Steinkjer, Stjørdal | Havnet i bilulykke – nå søker han det alternative. [Journal]. Trønder-Avisa. Fulltekst i vitenarkiv Vis sammendrag

  Arnt-Erlend Skjærvik har vært gjennom flere tøffe hendelser i livet. Det alternative ble viktig for vegen videre.

• Madsen, Ole Jacob (2026). Ole Jacob Madsen: Er vi på vei mot et demokrati styrt av synkroniserte følelser? Fulltekst i vitenarkiv Vis sammendrag

  Én ting er om mediedekningen etter kong Haralds død ble for unisont hyllende og massiv; et enda mer borende spørsmål er om mange fikk en følelse av ikke bare å ha latt seg rive med, men blitt manipulert, spør Ole Jabob Madsen.

• Eftedal, Nikolai Haahjem (2026). For Clark’s Consideration: Genotypic Population Stratification and Non-Additive Genetic Effects. Econ Journal Watch. 23(2), s. 545–553. Fulltekst i vitenarkiv Vis sammendrag

  In his book, To Have and Have Not: The Determinants of Social Status in England, 1600-2026, Gregory Clark argues that a simple model with genetic transmission and assortative mating is sufficient to explain why socio-economic outcomes tend to run in families. Additionally, he provides a collection of arguments against the idea that environmental effects are important contributors to the similarities in outcomes he documents within extended families. Here, I raise two criticisms of Clark’s explanatory framework, and for each criticism suggest ways to mitigate it without introducing environmental effects. First, I criticize the framework for requiring that mates are highly correlated on unobserved traits that are highly heritable and highly genetically correlated with the outcome to be explained. I here suggest allowing for genotypic population stratification. Second, I criticize the framework for underestimating the importance of zygosity for the similarity of twins. As a fix for this, I suggest incorporating non-additive genetic effects.

• Eftedal, Nikolai Haahjem; Lyu, Xuanyu & Keller, Matthew C. (2026). The island model of assortative mating: Assortment through segregation and selective migration. Fulltekst i vitenarkiv Vis sammendrag

  In a sample of 180,194 genotyped norwegians, we have correlations on polygenic scores for both height and educational attainment for 446,779 pairs of relatives, across 20 categories. There are 7 categories of biological relatives and 13 categories of relatives-in-law, connected by increasingly long chains of sibling, parent/child and marriage links, going out as far as six links. For height PGIs, we find that the pattern of correlations aligns well with a simple model of direct phenotypic assortment. For educational attainment, however, PGI correlations between distant in-laws are much too high for direct assortment. And models with indirect assortment on an unobserved trait can fit these data only if this trait is very highly correlated between mates and siblings. We present an alternative mechanism for assortative mating, where mating only occurs within segregated sub-populations, and where movements between sub-populations are uncommon and phenotype dependent. Through simulations, we show that such a model of assortment, which we name “the island model”, can account for our set of PGI correlations without the need for extreme assumptions about an unobserved assortment phenotype. Additionally, the model is consistent with recent studies of migration patterns within nations, showing that movements between rural and urban areas correlate with EA4 PGIs. Implications for behavioral genetic models assuming standard phenotypic assortment are discussed. And so are various properties of this island model, such as equilibrium conditions, and the consequences of sub-population specific shared-environmental effects.

• Teulings, Irene Johanna Elisabeth; Bjørndal, Ludvig Daae; Liu, Jinrui; Nes, Ragnhild Bang; Røysamb, Espen & Vittersø, Joar (2026). Being Good, Feeling Good? Daily Links Between Moral and Prosocial Values, Value-Fulfillment, and Wellbeing. Fulltekst i vitenarkiv Vis sammendrag

  Are moral and prosocial people also happier in everyday life? Existing research is mixed: endorsing prosocial values is often linked to higher well-being, yet acting to help others can entail personal costs in the moment. One reason may be that most studies examine values rather than daily value-consistent behaviour, and rarely distinguish between momentary and longer-term well-being. We address these gaps using ecological momentary assessment data from more than 10,000 adults (120 beeps in total per person). At baseline, participants reported their moral and prosocial values. During the assessment period, they received four prompts per day asking whether they had (a) acted like a good, moral person and (b) taken care of or helped someone, alongside a broad set of well-being indicators (e.g., positive emotions, negative emotions, life satisfaction, meaning, social well-being, engagement). This design allows us to quantify the extent to which people behave in line with their values across days, and to link both values and daily behaviour as well as value–behaviour congruence to momentary and long-term well-being. Ongoing analyses will clarify when, and for whom, “being good” is associated with “feeling good”.

• Walhovd, Kristine B (2026). Timing of influences on brain and cognition across the lifespan. Fulltekst i vitenarkiv
• Walhovd, Kristine B (2026). Timing of influences on brain and cognition across the lifespan. Fulltekst i vitenarkiv
• Walhovd, Kristine B (2026). Timing of influences on brain and cognition across the lifespan. Fulltekst i vitenarkiv
• Walhovd, Kristine B (2026). The Relative Impact of Better Beginnings and Maintenance of the Brain in Healthy Aging (Walhovd and Fjell). Fulltekst i vitenarkiv
• Walhovd, Kristine B (2026). Early life factors and adult cognitive and brain risk. Fulltekst i vitenarkiv Vis sammendrag

  AHUS Sommerseminar

• Walhovd, Kristine B (2026). Timing of influences on brain and cognition in a lifespan perspective. Fulltekst i vitenarkiv
• Walhovd, Kristine B (2026). The Exposome and DOHaD: Brain structure across time and place  - cohort and district effects on neuroanatomy and its functional consequences in UK Biobank. Fulltekst i vitenarkiv
• Nes, Ragnhild Bang (2026). Hverdagsglede som helsekapital. Fulltekst i vitenarkiv
• Nes, Ragnhild Bang; Røysamb, Espen; Hansen, Thomas & Nilsen, Thomas Sevenius (2026). Norge på 6. plass i Verdens lykkerapport 2026 - FHI. doi: https:/www.fhi.no/nyheter/2026/norge-pa-6.-plass-i-verdens-lykkerapport-2026. Fulltekst i vitenarkiv Vis sammendrag

  FN lanserer World Happiness Report 19. mars. For niende år på rad er befolkningen i Finland den mest fornøyde i verden, foran Danmark og Island. Norge ligger i år på en 6. plass etter de øvrige nordiske landene – og Costa Rica. Afghanistan ligger nederst på listen.

• Nes, Ragnhild Bang (2026). World Happiness Report 2026: Status Norge. Fulltekst i vitenarkiv
• Nes, Ragnhild Bang; Røysamb, Espen; Czajkowski, Nikolai Olavi & Prydz, Monica Beer (2026). Digital Wellbeing Promotion in the General Population: Effects, Mechanisms, and Long-Term Outcomes of the Five Ways to Wellbeing for All Intervention. Fulltekst i vitenarkiv Vis sammendrag

  Introduction The global rise in mental health problems and compromised wellbeing highlights the need for scalable and cost-effective wellbeing interventions. The Five Ways to Wellbeing for All (5waysA) is a digital adaptation of the UK’s Five Ways to Wellbeing framework, promoting wellbeing through five activity domains: connect, be active, take notice, keep learning, and give. Delivered via two webinars and SMS reminders over ten weeks, the 5waysA program aims to enhance wellbeing and reduce psychological distress in the general population. Methods A large-scale randomized controlled trial (N = 969) and subsequent secondary analyses were conducted in Norway. Self-reported life satisfaction, flourishing, positive emotions, anxiety, and depression were assessed pre-, mid-, and post-intervention. Analyses included multilevel modeling, mediation analysis, and network intervention analysis (NIA). A 12-month follow-up study with synthetic control comparison examined long-term effects. Findings Compared to waiting-list controls, participants in the intervention group reported significantly greater improvements in wellbeing (life satisfaction, flourishing, positive emotions) and reductions in anxiety and depressive symptoms (Cohen’s d = 0.20–0.49), with larger effects among those with most pre-intervention symptoms. Mediation analyses indicated that engagement in the Five Ways activities partially explained these effects, with a clear dose–response relationship between activity engagement and wellbeing outcomes. NIA revealed that increased positive emotions represented the main direct pathway, linking the intervention to improved wellbeing. Long-term follow-up demonstrated sustained gains in life satisfaction at 12 months (d = 0.28), exceeding simulated population-level controls (d = 0.17). Conclusions The 5waysA program effectively promotes wellbeing and reduces distress through accessible, evidence-based activities. Its digital, low-cost format, and durable effects make it a promising large-scale strategy for population-level mental health promotion and positive psychological functioning.

• Nes, Ragnhild Bang (2026). #60 Blir vi lykkeligere av penger? - Sunn Økonomi | Acast. Fulltekst i vitenarkiv Vis sammendrag

  Listen to #60 Blir vi lykkeligere av penger? from Sunn Økonomi. Gjør penger oss lykkelige? I denne episoden har jeg med psykolog og lykkesforsker Gunvor Marie Dyrdal, som har doktorgrad i positiv psykologi - og vi dykker ned i forskningen på penger og lykke. Vi gir deg 8 konkrete hverdagsvaner somforskning viser faktisk gjør oss lykkeligere.

• Nes, Ragnhild Bang (2026). Fem grep for et litt lykkeligere 2026 - Av-og-til. [Internet]. Av og til. Fulltekst i vitenarkiv Vis sammendrag

  Oppdag de fem «lykke-knepene» fra lykkeforsker Ragnhild Bang Nes. Bli lykkeligere i hverdagen med konkrete øvelser og forskningsbaserte grep.

• Nes, Ragnhild Bang (2026). – God livskvalitet er en motor. [Internet]. Forskerforum. Fulltekst i vitenarkiv Vis sammendrag

  Lykkeforsker ved Folkehelseinstituttet Ragnhild Bang Nes mener et godt liv bør være en menneskerett.

• Nes, Ragnhild Bang (2026). Happy You. Fulltekst i vitenarkiv
• Nes, Ragnhild Bang (2026). Happy Nordics. Fulltekst i vitenarkiv
• Nes, Ragnhild Bang (2026). – Når gledene oppstår, kan vi like gjerne kjenne på dei - NRK. [Journal]. NRK. Fulltekst i vitenarkiv Vis sammendrag

  Dersom du ikkje følger med, er det lett å gå glipp av kvardagsgleder. Bjarte har trena på å legge merke til dei.

• Moltu, Christian; Brattland, Heidi; Råbu, Marit; Mcaleavey, Andrew Athan & Westbye, Hans Jacob (2026). Presentasjonar og panelbidrag ved Society for Psychotherapy Research (SPR) 57th International Annual Meeting 2026, Osaka. doi: https:/www.psychotherapyresearch.org/page/spr2026. Fulltekst i vitenarkiv
• Smajlagic, Dinka; Sunde, Hans Fredrik; Valenza-Troubat, Noemie; Kelly, Kristen; Lyu, Xuanyu & Sapin, Emmanuel [Vis alle 12 forfattere av denne artikkelen] (2026). Estimating assortative mating using haplotype-specific polygenic scores across physiological, psychological, and social traits in the Norwegian MoBa Cohort. doi: https:/s3.amazonaws.com/ClubExpressClubFiles/971921/documents/BGA_2026_Final_Program_1883376854.pdf?AWSAccessKeyId=AKIA6MYUE6DNCQ7GISON&Expires=1790839847&response-content-disposition=inline%3B%20filename%3DBGA_2026_Final_Program.pdf&Signature=nfauyWIWzAanx8Du1HeYli1Hi0Q%3D. Fulltekst i vitenarkiv
• Madhavan, Vaishnavi K; Demange, Perline Aline Delle; Ayorech, Ziada; Hottenga, Jouke Jan; Bartels, Meike & Ystrom, Eivind [Vis alle 8 forfattere av denne artikkelen] (2026). Bipolar Disorder and Education: Deciphering a Complex Relationship using Genetic and Sibling Differences. doi: https:/s3.amazonaws.com/ClubExpressClubFiles/971921/documents/BGA_2026_Final_Program_1883376854.pdf?AWSAccessKeyId=AKIA6MYUE6DNCQ7GISON&Expires=1790839847&response-content-disposition=inline%3B%20filename%3DBGA_2026_Final_Program.pdf&Signature=nfauyWIWzAanx8Du1HeYli1Hi0Q%3D. Fulltekst i vitenarkiv
• Garrido, Pablo F. (2026). Reproducibility of quantitative methods​. Fulltekst i vitenarkiv
• Melinder, Annika Maria Désirée; Sandberg, Kirsten; Kierulf, Haagen Klundby & Skeimo, Inger (2026). Experts work in Child Protective Cases. Fulltekst i vitenarkiv
• Kierulf, Haagen Klundby; Skeimo, Inger & Melinder, Annika Maria Désirée (2026). Samvær i barneverns- og barnelovssaker. Fulltekst i vitenarkiv
• Vuoskoski, Jonna Katariina (2026). Music, AI, and wellbeing: The role of perception. Fulltekst i vitenarkiv
• Vuoskoski, Jonna Katariina; Tzanaki, Persefoni; Perik, Lieke Dinie Maria & Erdem, Cagri (2026). Trait empathy facilitates rhythmic entrainment and interpersonal synchrony. doi: https:/www.jyu.fi/en/file-download/download/public/67529. Fulltekst i vitenarkiv Vis sammendrag

  Recent research suggests that cognitive facets of trait empathy may facilitate interpersonal synchrony. However, the contributions of affective trait empathy and state empathy remain underexplored. This study investigated how empathy – both as a dispositional characteristic and as an experimentally induced state – influences rhythmic entrainment and interpersonal synchrony in a musical context. Thirty-three dyads completed two synchrony tasks before and after an empathy induction session. In Task 1, participants tapped with a metronome and then tried to synchronise with their partner's tapping; in Task 2, they tried to play melodies in synchrony. To induce empathy, participants narrated personal events while partners were instructed to either empathise (empathy condition) or memorise factual details (control condition) of the events. Trait empathy was measured using the Interpersonal Reactivity Index (IRI; Davis, 1980). Emotional sharing and behavioural mirroring during the empathy induction were assessed using self-report and motion-capture measures. Results showed that both affective and cognitive trait empathy contributed to synchrony: Higher Empathic Concern predicted more consistent tapping in Task 1, and higher Fantasy predicted greater interpersonal synchrony in Task 2. Induced empathy showed no main effects; however, high-Fantasy participants who felt more emotionally engaged with their partners' narrations synchronised better than those who were less engaged. Additionally, high-Fantasy participants showed greater mirroring of narrators' head movements, although this was significant only in the control condition. These findings point to a multifaceted role of empathy in rhythmic and interpersonal synchronisation, suggesting that effective coordination draws on both cognitive and emotional aspects of empathy.

• Yang, Tianfang; Anderson, Jacob; Corley, Robin; Hopfer, Christian; McGue, Matt & Rhee, Soo [Vis alle 10 forfattere av denne artikkelen] (2026). Linking Pathological Personality Trait to Parenting, Romantic Relationship, and Workplace Behaviors: Using Co-Twin Control to Understand Variances in Pathways. Fulltekst i vitenarkiv
• Yang, Tianfang; Anderson, Jacob E.; Corley, Robin P.; Hopfer, Christian J.; McGue, Matt K. & Rhee, Soo [Vis alle 11 forfattere av denne artikkelen] (2026). Etiologic Links Between Personality Pathology and Workplace Behavior. Fulltekst i vitenarkiv
• Hegemann, Laura Elizabeth; Scheiene, Martin; Bjuland, Knut Jørgen; Valand, Stian Barbo; Hannigan, Laurie John & Ask, Helga [Vis alle 8 forfattere av denne artikkelen] (2026). Clinical and genetic correlates of loss of skills during early development in the Norwegian mother, father and child cohort study (MoBa). Fulltekst i vitenarkiv
• Yang, Tianfang; Anderson, Jacob E.; Corley, Robin P.; Hopfer, Christian J.; McGue, Matt K. & Rhee, Soo [Vis alle 11 forfattere av denne artikkelen] (2026). Linking pathological personality trait to workplace behaviors: using co-twin control to understand pathways. Fulltekst i vitenarkiv
• Yang, Tianfang; Nikolic, Milena; Grønnerød, Cato & Czajkowski, Nikolai Olavi (2026). A Person-Centered Examination on the Overlap Between Maladaptive and Normal Personality Profiles: Evidence from Norwegian Community Sample. Fulltekst i vitenarkiv
• Torvik, Fartein Ask; Støle, Hildegunn & Arvola, Jacob (2026). Utsatt skolestart i Norden. [Radio]. NRK. Fulltekst i vitenarkiv Vis sammendrag

  Ekko i NRKP2 om hvorvidt flere bør få utsatt skolestart i Norge og hvordan det går med 10-11-åringene i Danmark som fikk utsatt skolestart. Basert på RAE-artikkel med Knudsen som førsteforfatter, med analyser av PIRLS data. I samtale med Fartein Ask Torvik fra FHI og programleder Jacob Arvola.

• Hart, Rannveig Kaldager & Skirbekk, Vegard Fykse (2026). Fødselstall under press. [Internet]. Tendens. Fulltekst i vitenarkiv Vis sammendrag

  Norge får stadig færre barn. En ny utredning viser at årsakene handler om mer enn familiepolitikk.

• Demange, Perline Aline Delle (2026). Beyond trio: genetic effects in the extended family. Fulltekst i vitenarkiv
• Demange, Perline Aline Delle (2026). Beyond trio: genetic effects in the extended family. Fulltekst i vitenarkiv
• Demange, Perline Aline Delle; Akingbuwa, Wonuola; Cheesman, Rosa Catherine Gillespie & Ystrom, Eivind (2026). A Genomic Test of Goodness-of-Fit: Using Personality Polygenic Indices to Model Parent–Child Fit during Development. Fulltekst i vitenarkiv
• Demange, Perline Aline Delle; Cheesman, Rosa Catherine Gillespie; Akingbuwa, Wonuola & Ystrom, Eivind (2026). A Genomic Test of Goodness-of-Fit: Using Personality Polygenic Indices to Model Parent–Child Fit. Fulltekst i vitenarkiv
• Tabori, Mia; Enander, Hilda; Ystrom, Eivind & Demange, Perline Aline Delle (2026). To What Extent Does Early Temperament Predict Symptoms of Anxiety and Depression in Adolescence? A Sibling Design. Fulltekst i vitenarkiv
• Ofstad, Sverre Berg; Peng, Qiyuan; Ebeltoft, Joakim; Bjørndal, Ludvig Daae; Rayner, Christopher & Ayorech, Ziada [Vis alle 10 forfattere av denne artikkelen] (2026). PGI-by-Environment interactions: practical guidelines for robust research. Fulltekst i vitenarkiv
• Demange, Perline Aline Delle (2026). Cognitive, Non-Cognitive, and Genetics: Perline Demange on Skills, Schooling, and Psychopathology. Fulltekst i vitenarkiv
• Vidal-Piñeiro, Didac (2026). Brain structure across time and place: cohort and districts effects on neuroanatomy and its functional consequences in UK Biobank. doi: https:/www.lcbc.uio.no/english/origo-cogito/events/origocogito_conference_program.pdf. Fulltekst i vitenarkiv
• Walhovd, Kristine B (2026). Timing influences on brain and cognition trough the lifespan- registry data, population studies and beyond. doi: https:/uio-my.sharepoint.com/:w:/r/personal/siljefor_uio_no/_layouts/15/Doc.aspx?sourcedoc=%7BED91FA87-8256-4DE6-A12C-88E18E9EE4C3%7D&file=OrigoCogito%20conference%20program%20draft.docx&action=default&mobileredirect=true. Fulltekst i vitenarkiv
• Sneve, Markus Handal (2026). Movies as memory probes: a low-demand fMRI paradigm designed for lifespan samples and clinical populations. doi: https:/www.siemens-healthineers.com/no/news-and-events/siemens-academy-no/userforum-imaging/magnetomforum. Fulltekst i vitenarkiv
• Walhovd, Kristine B (2026). Om hjernens utviklings gjennom livsløpet. doi: https:/www.barnogungekongressen.no/. Fulltekst i vitenarkiv
• Fjell, Anders Martin (2026). Søvn. Fulltekst i vitenarkiv
• Fjell, Anders Martin; Roe, James Michael & Vidal-Piñeiro, Didac (2026). Cortical thickness changes precede high levels of amyloid by at least 7 years-Article Metrics. Nature.com. doi: https:/www.nature.com/articles/s41593-026-02363-4. Fulltekst i vitenarkiv
• Fjell, Anders Martin (2026). Fagmiljøet splittet om Alzheimer-medisin: Dette mener de om DMPs vurdering. [Internet]. Dagens Medisin. doi: https:/www.dagensmedisin.no/alzheimers-sykdom-dmp-lecanemab/fagmiljoet-splittet-om-alzheimer-medisin-dette-mener-de-om-dmps-vurdering/755550. Fulltekst i vitenarkiv
• Fjell, Anders Martin & Roe, James Michael (2026). Alzheimers, Alzheimers sykdom | Nytt alzheimer-funn kan avsløre sykdom sju år tidligere. [Internet]. Nettavisen. doi: https:/www.nettavisen.no/nyheter/nytt-alzheimer-funn-kan-avslore-sykdom-sju-ar-tidligere/s/80-95-3641. Fulltekst i vitenarkiv
• Fjell, Anders Martin (2026). Nytt alzheimer-funn kan avsløre sykdom sju år tidligere. [Internet]. Sykepleien.no. doi: https:/sykepleien.no/2026/08/nytt-alzheimer-funn-kan-avslore-sykdom-sju-ar-tidligere. Fulltekst i vitenarkiv
• Fjell, Anders Martin & Walhovd, Kristine B (2026). Forskere tar et oppgjør med demens-myter. [Internet]. Forskning.no. doi: https:/www.forskning.no/demens-hjerneforskning-hjernen/forskere-tar-et-oppgjor-med-demens-myter/2677087. Fulltekst i vitenarkiv
• Fjell, Anders Martin & Roe, James Michael (2026). Kan påvise tegn på Alzheimers sykdom langt tidligere enn antatt. [Internet]. forskning.no. doi: https:/www.forskning.no/alzheimer-hjernen-partner/kan-pavise-tegn-pa-alzheimers-sykdom-langt-tidligere-enn-antatt/2700321. Fulltekst i vitenarkiv
• Fjell, Anders Martin (2026). Overraskende råd fra hjerneforsker: – Dette er viktigst. doi: https:/www.aftenposten.no/psykisk-helse-og-psykologi/i/2pB3Ly/overraskende-raad-fra-hjerneforsker-dette-er-viktigst. Fulltekst i vitenarkiv Vis sammendrag

  Aftenposten innlegg

• Fjell, Anders Martin (2026). Use of MRI in a precision medicine approach for detection of dementia. Fulltekst i vitenarkiv
• Fjell, Anders Martin (2026). Punctuated cognitive decline in aging. Fulltekst i vitenarkiv Vis sammendrag

  Ahus sommerseminar

• Fjell, Anders Martin (2026). Hjernen og hukommelse. Hvordan hukommelsen (egentlig) fungerer – og har den noe til felles med KI? Fulltekst i vitenarkiv
• Fjell, Anders Martin (2026). Hjernen og hukommelse. Hvordan hukommelsen (egentlig) fungerer – og har den noe til felles med KI? Fulltekst i vitenarkiv
• Fjell, Anders Martin (2026). Individual sleep need, brain health and cognitive function. Fulltekst i vitenarkiv Vis sammendrag

  NordicSleep conference presentation

• Fjell, Anders Martin (2026). A Role for Sleep in Neurodegeneration. Fulltekst i vitenarkiv Vis sammendrag

  Conference presentation, EU MIND

• Soest, Tilmann von & Potočár, Libor (2026). Å vokse opp med foreldre som er sammen, har betydning lang inn i voksen alder. [Journal]. Aftenposten. Fulltekst i vitenarkiv Vis sammendrag

  Forskerne fulgte over 3000 nordmenn fra de var rundt 15 til 43 år. De fant noen tydelige spor etter foreldrenes betydning.

• Hinrichs, Yannic & Sorrentino, Martina (2026). Coping in the Dark: Blackpill Ideology and Social Identity Management in Online Incel Communities. Universitetet i Oslo. Fulltekst i vitenarkiv Vis sammendrag

  How do male supremacist online communities maintain social identification, even in the face of constant societal stigma and self-derogation? This study employs computational social science methods to examine the themes, group-level emotions and lexical strategies used to maintain social identification in Involuntary Celibate (incel) online communities. The findings reveal that the biological essentialism and inherent system justification of the “blackpill” ideology effectively block cognitive and behavioural exits and render collective social competition unavailable. This specific ideology-driven mechanism, which forces members of incel online communities to rely on social creativity and outgroup derogation to maintain positive distinctiveness, reflects both group boundary impermeability and system justification and will be referred to as “ideological impermeability.” The computational mapping of the emotional spectrum of the two analysed online communities also reveals a profoundly negative collective emotionality, both toward the outgroups and, surprisingly, toward the ingroup members, reinforcing the conclusion of chronically negative social identity maintained through outgroup derogation, social creativity and ideological impermeability that stops individual mobility and social action. Lastly, the low frequency of violent lexicon relative to the systemic dehumanization of outgroups further supports the hypothesis of reliance on passive social creativity and outgroup derogation, instead of violent collective action, challenging the common portrayals of incel communities as violent radicalisation hubs. A new view of the blackpill ideology as a structural barrier that denies the choice of change, and not just a set of extremist beliefs, is fundamental for the development of effective future deradicalization pathways.

• Sartorius, Alina Marie; Quintana, Daniel; Westlye, Lars Tjelta & Meer, Dennis van der (2026). Deciphering the oxytocin signaling pathway. An exploratory, open, multi-method approach to understand and annotate a diverse endocrine system. Universitetet i Oslo. Fulltekst i vitenarkiv Vis sammendrag

  The nonapeptide oxytocin is a multifaceted and evolutionarily conserved hormone and neuromodulator. The domains it has been implicated in since its discovery approximately 130 years ago (Howell, 1898; Oliver & Schäfer, 1895) range from galactagogue (I. Ott & Scott, 1910) and uterotonic (Dale, 1906, 1909), over energy and bone metabolic (Colaianni et al., 2014; Leng & Sabatier, 2017), cardiovascular (Gutkowska & Jankowski, 2012), to social (H. K. Caldwell, 2017), cognitive (Brambilla et al., 2016), and psychiatric (Young, 2001). It is predominantly synthesized in the brain within the hypothalamus, where its structurally and functionally related paralog vasotocin (Theofanopoulou et al., 2021) is produced, too (Bethlehem et al., 2013; Brownstein et al., 1980; Buijs et al., 2021; Ivell, 1986; Meyer-Lindenberg et al., 2011). From there, the neuropeptide is released centrally (Landgraf & Neumann, 2004; Leng et al., 2008; Neumann, 2007) and into the periphery via the circulation (Meyer Lindenberg et al., 2011). The mentioned functions are often well conserved across mammals (Bielsky & Young, 2004), in early vertebrates (Goodson, 2005; Gwee et al., 2009), and even in some invertebrate species (Odekunle & Elphick, 2020). However, many of the results in the different domains, mostly but not exclusively, in humans, are marked by inconsistency and unsuccessful replication attempts (Audunsdottir et al., 2024; Brede et al., 2019; Declerck et al., 2020; Kosfeld et al., 2005; Sikich et al., 2021; Thienel et al., 2016), or appear to be highly dependent on (latent) context variables (Bartz et al., 2011; Ford & Young, 2022; Olszewski et al., 2016). More rigorous open science practices could help with reducing questionable research practices, increasing reproducibility and standardizing experimental designs. This indirectly promotes result consistency (Crüwell et al., 2019; Yamada, 2018). At the same time, the oxytocin research field is currently still lacking an overarching theoretical framework. The lack of such an interdisciplinary, comprehensive framework and the persistence of research conceptualized in isolated domains perpetuates heterogeneity in study designs, which leads to heterogeneity in outcomes (Muthukrishna & Henrich, 2019; Winterton, Westlye, et al., 2021). Adopting a more open scientific approach and reiterating on basic questions regarding a phenotype’s evolution, mechanisms, and physiology (Tinbergen, 1963) can aid with developing a comprehensive theory and with homogenizing findings. This in turn may aid with reconciling the scattered landscape of oxytocin research findings. To this end, this doctoral thesis focused on exploring the oxytocin system from the ground up from an evolutionary genetics, imaging genetics, and meta-analytical perspective. A suite of different methods was chosen to represent the broad range of oxytocinergic properties and to cover a variety of ultimate and proximate angles. Open science principles were adopted wherever possible. Potential theoretical frameworks are discussed based on the findings and the reviewed literature. Paper I (Sartorius et al., 2024) assumed a comprehensive evolutionary perspective by delineating the timeline of the oxytocin signaling pathway genes over the course of the past 3.5 billion years using comparative genetics and positive selection analyses. The assigned evolutionary ages of each gene indicated that the majority of the pathway genes were modern (~64%), but that some genes were conserved in species as ancient as descendants of early cellular life. The analyses confirmed that OXT, OXTR, and CD38 emerged with the evolution of jawless and jawed vertebrates 540 – 530 million years ago. Modern oxytocin pathway genes were found to be enriched in muscle tissue and the brain, specifically in fronto cortical regions. In Paper II (Sartorius et al., 2026a), a specific aspect of the oxytocin systems physiology was investigated. The shared genetic architecture between oxytocinergic-vasotocinergic hypothalamus subunits and selected psychiatric/neurodevelopmental and metabolic traits was explored using bivariate mixture models, and subsequently functionally annotated. Moderate-to-extensive genetic overlap was found between all subunits and traits, on average more so between the subunits and psychiatric/neurodevelopmental than metabolic traits. The most extensive overlap, however, was found between the two anterior hypothalamic subunits and systolic blood pressure. The genes were up- and down-regulated in different tissues and enriched in gene sets related to cortical morphology and cognitive impairment. Given the lack of unanimity of study designs investigating and results describing oxytocin’s energy regulatory properties, Paper III (Sartorius et al., 2026b) was set out to synthesize data within this domain. Effects of exogenous oxytocin on caloric intake and appetite in healthy and clinical individuals were collected and pooled in a preregistered living systematic review and meta-analysis. Oxytocin administration was linked to appetite outcomes in some clinical populations, and to caloric intake conditional on the diagnostic group, that is, in patients with obesity. The results in healthy populations were inconclusive, possibly due to low power and high heterogeneity within and between the included studies. Based on these findings and contemporary literature, five different potential theoretical frameworks were explored. This included among other the option that oxytocin could be a behavioral flexibility hormone (Quintana & Guastella, 2020; Walle et al., 2026), that it could be a hormone with the primary function to facilitate successful reproduction (Feldman & Bakermans-Kranenburg, 2017; Insel et al., 1997; Wathes & Swann, 1982), or that the current multifunctionality is rooted in conserved contractile and osmoregulatory properties that diversified during evolution. Beyond that, the clinical utility of the findings was discussed, as well as methodological considerations and future directions. For instance, the quality of invertebrate and vertebrate genomes was addressed together with further open science perspectives. Prospective studies may focus on exploring the ontogenic angle of the oxytocin system, and using the openly shared code and analysis pipelines from the three papers here to, for instance, explore bivariate mixture models with additional ‘social’ traits. To conclude, the findings highlight the complexity of the oxytocin system – which goes beyond sociality – and the breadth of the undertaking of proposing an overarching theoretical framework for it. The results support the notion that the oxytocin signaling pathway is evolutionary conserved and evolved gradually, and that central oxytocin-vasotocin signaling may be connected to psychiatric/neuro developmental and metabolic traits by a shared set of genetic variants. The results also show that the hypothalamic peptide affects appetite in clinical groups, and corroborates that respective studies are underpowered and heterogenous, showcasing again the need for more open science and a unifying theoretical framework. While this thesis neither seeks nor claims to conclusively resolve the mysteries of the oxytocin system, its results aid in better understanding the endocrine system and add to the pool of knowledge to inspire future oxytocin research.

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