2026

Moeineslam, M., Steinsbekk, S., Wichstrøm, L., & Skalická, V. (2026). Does the quality of the relationship to parents and peers predict mental health service use during adolescence? A prospective community study. European Child & Adolescent Psychiatry. https://doi.org/10.1007/s00787-026-03160-x

Moeineslam, M., Steinsbekk, S., Wichstrøm, L., & Skalická, V. (2026). Family predictors of specialty mental health service use in adolescents: A prospective cohort study. Research on Child and Adolescent Psychopathology, 54, 3. https://doi.org/10.1007/s10802-025-01411-0

Morin, A. H., Wichstrøm, L., Steinsbekk, S., Stokke, S. S., Skalická, V., & Stenseng, F. (2026). Do better working memory and higher intrinsic motivation predict greater math achievement? Disaggregating within-person and between-person effects in a birth cohort followed from age 8 to 16. Contemporary Educational Psychology, 102467. https://doi.org/10.1016/j.cedpsych.2026.102467

Nobakht, H. N., Wichstrøm, L., Coyne, S. M., & Steinsbekk, S. (2026). Social media use, drinking, and smoking: Within-person relations from adolescence to adulthood. Computers in Human Behavior Reports, 24, 101344. https://doi.org/10.1016/j.chbr.2026.101344

Nobakht, H. N., Wichstrøm, L., & Steinsbekk, S. (2026). Longitudinal relations between social media use and cyberbullying victimization across adolescence: Within-person effects in a birth cohort. Journal of Youth and Adolescence, 55(1), 58–67. https://doi.org/10.1007/s10964-025-02205-9

Nobakht, H. N., Wichstrøm, L., & Steinsbekk, S. (2026). Social media use and the quality of family relationships: A six-wave longitudinal study of within-family effects from age 10 to 20. Journal of Youth and Adolescence, 55(5), 1361–1373. https://doi.org/10.1007/s10964-026-02362-5

Parisi, F., Steinsbekk, S., Wichstrøm, L., & Bjørklund, O. (2026). Eating your emotions: Within-person relations of emotional overeating with lability/negativity and emotion regulation from childhood to young adulthood. Child Development, aacag104. https://doi.org/10.1093/chidev/aacag104

Steinsbekk, S., Nesi, J., Choukas-Bradley, S., & Wichstrøm, L. (2026). Development and characteristics of sexting from age 14 to 18 years in a Norwegian birth cohort. Archives of Sexual Behavior, 55(3), 1345–1357. https://doi.org/10.1007/s10508-026-03413-5

Stenhaug, A., Skalická, V., Solem, S., & Stenseng, F. (2026). Is worry associated with social exclusion in school? Within-person relations from age 10 to 16. Journal of Adolescence. https://doi.org/10.1002/jad.70223

Wichstrøm, L., Hygen, B. W., Kuss, D. J., Stavropoulos, V., Skalická, V., Rodríguez-Cano, R., Øien, A. K., Stenseng, F., & Steinsbekk, S. (2026). Structure and stability of internet gaming disorder from childhood to late adolescence: A 5-wave birth cohort study. Addiction, 121(2), 413–422. https://doi.org/10.1111/add.70195

Xue, S., Wichstrøm, L., Henriksen, M., & Steinsbekk, S. (2026). Emotion regulation and anxiety disorder symptoms: Within-person relations from ages 6 to 18 in a birth cohort. Journal of Anxiety Disorders, 123, 103217. https://doi.org/10.1016/j.janxdis.2026.103217
 

2025

Husby, S. M., Ascaco, L. E., & Wichstrøm, L. (2025). Within-person relations between social skills and symptoms of oppositional defiant disorder and conduct disorder from preschool to adolescence – A birth cohort study. Research on Child and Adolescent Psychopathology. https://doi.org/10.1007/s10802-025-01298-x

Kuldas, S., Ranum, B., Aspvik, N. P., Wichstrøm, L., & Steinsbekk, S. (2025). Physical activity, sedentary time, and sleep from childhood to young adulthood: A seven-wave cohort study of within-person relations. Sleep, 48(12), zsaf221. https://doi.org/10.1093/sleep/zsaf221

Nobakht, H. N., Steinsbekk, S., & Wichstrøm, L. (2025). Longitudinal relations between aggression, emotion dysregulation, and social skills across middle childhood: A study of within-person effects. Journal of Interpersonal Violence. https://doi.org/10.1177/08862605251393737

Ranum, B. M., Wichstrøm, L., & Steinsbekk, S. (2025). Psychological predictors of physical activity and sedentary time from childhood to adolescence. Health Psychology. Advance online publication. https://doi.org/10.1037/hea0001494

Steinsbekk, S., Skoog, J., & Wichstrøm, L. (2025). Symptoms of depression, physical activity, and sedentary time: Within-person relations from age 6 to 18 in a birth cohort. Journal of the American Academy of Child & Adolescent Psychiatry. https://doi.org/10.1016/j.jaac.2025.03.018

Steinsbekk, S., Wichstrøm, L., & von Soest, T. (2025). Personality from age 10 to 16 years. A four-wave cohort study of development and sex differences in the Big Five and its facets. Personality and Social Psychology Bulletin. https://doi.org/10.1177/01461672251396595

Stenseng, F., Skalická, V., Skaug, S. S., Belsky, J., & Wichstrøm, L. (2025). Attention-deficit hyperactivity disorder symptoms and bullying victimization from childhood to adolescence – A within-person cross-lagged approach. Development and Psychopathology, 37(3), 1463–1473. https://doi.org/10.1017/S0954579424001251

Stokke, S. S., Stenseng, F., Morin, A. H., Hygen, B. W., Wichstrøm, L., Steinsbekk, S., Dybendal, B. H., & Skalická, V. (2025). Digital gaming and academic achievement: Within-person relations from age 10 to 16 in a Norwegian birth cohort. Media Psychology. https://doi.org/10.1080/15213269.2025.2576017

Wichstrøm, L., Grønli, H., Walstad, J. S., Raballo, A., Kvarstein, E. H., & Steinsbekk, S. (2025). Childhood predictors of cluster A personality disorder traits in adolescence: A seven-wave birth cohort study. European Child & Adolescent Psychiatry. https://doi.org/10.1007/s00787-025-02936-x
 

2024

Bjørklund, O., Wichstrøm, L., Llewellyn, C., & Steinsbekk, S. (2024). Validation of the Adult Eating Behavior Questionnaire in a Norwegian sample of adolescents. Appetite, 192, 107116. https://doi.org/10.1016/j.appet.2023.107116

Habibi Asgarabad, M., Steinsbekk, S., Hartung, C. M., & Wichstrøm, L. (2024). Reciprocal relations between dimensions of attention-deficit/hyperactivity and anxiety disorders from preschool age to adolescence: Sex differences in a birth cohort sample. Journal of Child Psychology and Psychiatry. https://doi.org/10.1111/jcpp.14038

Halse, M., Steinsbekk, S., Bjørklund, O., Hammar, Å., & Wichstrøm, L. (2024). Emotions or cognitions first? Longitudinal relations between executive functions and emotion regulation in childhood. Child Development, 95, 1508–1521. https://doi.org/10.1111/cdev.14096

Laugen, N. J., Kårstad, S. B., Reinfjell, T., & Wichstrøm, L. (2024). The development of emotion understanding in children: The importance of parents, teachers, and peers. Developmental Psychology, 60(2), 255–264. https://doi.org/10.1037/dev0001627

Morken, I. S., Wichstrøm, L., Steinsbekk, S., & Viddal, K. R. (2024). Depression and personality traits across adolescence – Within-person analyses of a birth cohort. Research on Child and Adolescent Psychopathology, 52(8), 1275–1287. https://doi.org/10.1007/s10802-024-01188-8

Nobakht, H. N., Steinsbekk, S., & Wichstrøm, L. (2024). Development of symptoms of oppositional defiant disorder from preschool to adolescence: The role of bullying victimization and emotion regulation. Journal of Child Psychology and Psychiatry, 65(3), 343–353. https://doi.org/10.1111/jcpp.13845

Nobakht, H. N., Steinsbekk, S., & Wichstrøm, L. (2024). Reciprocal relations between interparental aggression and symptoms of oppositional defiant and conduct disorders: A seven-wave cohort study of within-family effects from preschool to adolescence. Journal of Child Psychology and Psychiatry, 65(6), 753–763. https://doi.org/10.1111/jcpp.13903

Steinsbekk, S., Bjørklund, O., Valkenburg, P., Nesi, J., & Wichstrøm, L. (2024). The new social landscape: Relationships among social media use, social skills, and offline friendships from age 10–18 years. Computers in Human Behavior, 156, 108235. https://doi.org/10.1016/j.chb.2024.108235

Wichstrøm, L., Wilberg, T., Hartveit Kvarstein, E., & Steinsbekk, S. (2024). Childhood predictors of avoidant personality disorder traits in adolescence: A seven-wave birth cohort study. Journal of Child Psychology and Psychiatry. https://doi.org/10.1111/jcpp.14064

Wichstrøm, T., & Wichstrøm, L. (2024). Childhood predictors of nonsuicidal self-injury in adolescence: A birth cohort study. Journal of the American Academy of Child & Adolescent Psychiatry, 63. https://doi.org/10.1016/j.jaac.2023.12.013
 

2023

Brattfjell, M. L., Jozefiak, T., Lydersen, S., & Wichstrøm, L. (2023). Service use as a predictor of change in mental health problems among children: A prospective cohort study. Psychiatric Services, 74(12), 1256–1262. https://doi.org/10.1176/appi.ps.20220079

Habibi Asgarabad, M., Steinsbekk, S., & Wichstrøm, L. (2023). Social skills and symptoms of anxiety disorders from preschool to adolescence: A prospective cohort study. Journal of Child Psychology and Psychiatry, 64(7), 1045–1055. https://doi.org/10.1111/jcpp.13787

Johnsen, I. B., Wichstrøm, L., & Dahllöf, G. (2023). Prevalence and stability of blood-injection-injury phobia in childhood – A prospective community study in Norway. Acta Paediatrica, 113, 105–112. https://doi.org/10.1111/apa.17003

Morken, I. S., Viddal, K. R., von Soest, T., & Wichstrøm, L. (2023). Explaining the female preponderance in adolescent depression – A four-wave cohort study. Research on Child and Adolescent Psychopathology, 51, 859–869. https://doi.org/10.1007/s10802-023-01031-6

Nilsen, M., Weider, S., Halse, M. K., Fiskum, C., & Wichstrøm, L. (2023). Association of anxiety and depression to headache, abdominal- and musculoskeletal pain in children. Frontiers in Pain Research, 4, 1136145. https://doi.org/10.3389/fpain.2023.1136145

Steinsbekk, S., Nesi, J., & Wichstrøm, L. (2023). Social media behaviors and symptoms of anxiety and depression. A four-wave cohort study from age 10 to 16 years. Computers in Human Behavior, 147, 107859. https://doi.org/10.1016/j.chb.2023.107859
 

2022

Bjørklund, O., Wichstrøm, L., Llewellyn, C., & Steinsbekk, S. (2022). The prospective relation between eating behaviors and BMI from middle childhood to adolescence: A 5-wave community study. Preventive Medicine Reports, 27, 101795. https://doi.org/10.1016/j.pmedr.2022.101795

Halse, M., Steinsbekk, S., Hammar, Å., & Wichstrøm, L. (2022). Longitudinal relations between impaired executive function and symptoms of psychiatric disorders in childhood. Journal of Child Psychology and Psychiatry, 63(12), 1574–1582. https://doi.org/10.1111/jcpp.13622

Husby, S. M., Skalická, V., Li, Z., Belsky, J., & Wichstrøm, L. (2022). Reciprocal relations between conflicted student-teacher relationship and children's behavior problems: Within-person analyses from Norway and the USA. Research on Child and Adolescent Psychopathology, 51, 331–342. https://doi.org/10.1007/s10802-022-00968-4

Hygen, B. W., Belsky, J., Stenseng, F., Steinsbekk, S., Wichstrøm, L., & Skalická, V. (2022). Longitudinal relations between gaming, physical activity, and athletic self-esteem. Computers in Human Behavior, 132, 107252. https://doi.org/10.1016/j.chb.2022.107252

Stenseng, F., Tingstad, E. B., Wichstrøm, L., & Skalická, V. (2022). Social withdrawal and academic achievement, intertwined over years? Bidirectional effects from primary to upper secondary school. British Journal of Educational Psychology. https://doi.org/10.1111/bjep.12504

Wichstrøm, L., Borgen, A. E., & Steinsbekk, S. (2022). Parental personality disorder symptoms and children's social skills: A prospective community study. European Child & Adolescent Psychiatry. https://doi.org/10.1007/s00787-022-01965-0

Zahl-Thanem, T., Wichstrøm, L., & Steinsbekk, S. (2022). Relations between physical activity, sedentary time, and body fat from childhood to adolescence: Do they differ by sex? International Journal of Obesity, 46(9), 1615–1623. https://doi.org/10.1038/s41366-022-01156-6
 

2021

Andersen, T. G., Fiskum, C., Jacobsen, K., Lydersen, S., & Wichstrøm, L. (2021). Inhibitory control moderates the effect of anxiety on vagally mediated heart rate variability: Findings from a community sample of young school-aged children. Cognitive Therapy and Research, 45, 663–678. https://doi.org/10.1007/s10608-020-10184-3

Falch-Madsen, J., Wichstrøm, L., Pallesen, S., Jensen, M. R., Bertheussen, L., Solhaug, S., & Steinsbekk, S. (2021). Predictors of diagnostically defined insomnia in child and adolescent community samples: A literature review. Sleep Medicine, 87, 241–249. https://doi.org/10.1016/j.sleep.2021.09.003

Falch-Madsen, J., Wichstrøm, L., Pallesen, S., Ranum, B., & Steinsbekk, S. (2021). Child and family predictors of insomnia from early childhood to adolescence. Sleep Medicine. https://doi.org/10.1016/j.sleep.2021.08.023

Garfield, V., Llewellyn, C., Wichstrøm, L., & Steinsbekk, S. (2021). Shared genetic architecture underlying sleep and weight in children. Sleep Medicine, 83, 40–44. https://doi.org/10.1016/j.sleep.2021.04.021

Morken, I. S., Viddal, K. R., Ranum, B., & Wichstrøm, L. (2021). Depression from preschool to adolescence – Five faces of stability. Journal of Child Psychology and Psychiatry. https://doi.org/10.1111/jcpp.13362

Ranum, B. M., Wichstrøm, L., Pallesen, S., Falch-Madsen, J., & Steinsbekk, S. (2021). Persistent short sleep from childhood to adolescence: Child, parent and peer predictors. Nature and Science of Sleep, 13, 163–175. https://doi.org/10.2147/NSS.S290586

Steinsbekk, S., Ranum, B. M., & Wichstrøm, L. (2021). Prevalence and course of anxiety disorders and symptoms from preschool to adolescence: A 6-wave community study. Journal of Child Psychology and Psychiatry. https://doi.org/10.1111/jcpp.13487

Steinsbekk, S., Wichstrøm, L., Stenseng, F., Nesi, J., Hygen, B. W., & Skalická, V. (2021). The impact of social media use on appearance self-esteem from childhood to adolescence – A 3-wave community study. Computers in Human Behavior, 114, 106528. https://doi.org/10.1016/j.chb.2020.106528

2020

Brattfjell, M. L., Jozefiak, T., & Wichstrøm, L. (2020). Predictors of community versus specialty mental health service use: A prospective cohort study. European Child & Adolescent Psychiatry. https://doi.org/10.1007/s00787-020-01575-8

Falch-Madsen, J., Wichstrøm, L., Pallesen, S., & Steinsbekk, S. (2020). Prevalence and stability of insomnia from preschool to early adolescence: A prospective cohort study in Norway. BMJ Paediatrics Open, 4(1), e000660. https://doi.org/10.1136/bmjpo-2020-000660

Hygen, B. W., Skalická, V., Stenseng, F., Belsky, J., Steinsbekk, S., & Wichstrøm, L. (2020). The co-occurrence between symptoms of internet gaming disorder and psychiatric disorders in childhood and adolescence: Prospective relations or common causes? Journal of Child Psychology and Psychiatry, 61(8), 890–898. https://doi.org/10.1111/jcpp.13289

Ranum, B. M., Wichstrøm, L., Pallesen, S., & Steinsbekk, S. (2020). Prevalence and stability of insufficient sleep measured by actigraphy: A prospective community study. Pediatric Research. https://doi.org/10.1038/s41390-020-0768-y

Steinsbekk, S., Bjørklund, O., Llewellyn, C., & Wichstrøm, L. (2020). Temperament as a predictor of eating behavior in middle childhood – A fixed effects approach. Appetite. https://doi.org/10.1016/j.appet.2020.104640
 

2019

Halse, M., Steinsbekk, S., Hammar, Å., Belsky, J., & Wichstrøm, L. (2019). Parental predictors of children's executive functioning from ages 6 to 10. British Journal of Developmental Psychology, 37, 410–426. https://doi.org/10.1111/bjdp.12282

Hygen, B. W., Belsky, J., Stenseng, F., Skalická, V., Kvande, M. N., Zahl-Thanem, T., & Wichstrøm, L. (2019). Time spent gaming and social competence in children: Reciprocal effects across childhood. Child Development. https://doi.org/10.1111/cdev.13243

Kvande, M. N., Bjørklund, O., Lydersen, S., Belsky, J., & Wichstrøm, L. (2019). Effects of special education on academic achievement and task motivation: A propensity-score and fixed-effects approach. European Journal of Special Needs Education, 34(4), 409–423. https://doi.org/10.1080/08856257.2018.1533095

Ranum, B. M., Wichstrøm, L., Pallesen, S., Falch-Madsen, J., Halse, M., & Steinsbekk, S. (2019). Association between objectively measured sleep duration and symptoms of psychiatric disorders in middle childhood. JAMA Network Open, 2(12), e1918281. https://doi.org/10.1001/jamanetworkopen.2019.18281

Skalická, V., Hygen, B. W., Stenseng, F., Kårstad, S. B., & Wichstrøm, L. (2019). Screen time and the development of emotion understanding from age 4 to age 8: A community study. British Journal of Developmental Psychology, 37, 427–443. https://doi.org/10.1111/bjdp.12283

Steinsbekk, S., Berg-Nielsen, T. S., Belsky, J., Helland, E. B., Hågenrud, M., Raballo, A., & Wichstrøm, L. (2019). Parents' personality-disorder symptoms predict children's symptoms of anxiety and depressive disorders – A prospective cohort study. Journal of Abnormal Child Psychology, 47(12), 1931–1943. https://doi.org/10.1007/s10802-019-00568-9

Stenseng, F., Hygen, B. W., & Wichstrøm, L. (2019). Time spent gaming and psychiatric symptoms in childhood: Cross-sectional associations and longitudinal effects. European Child & Adolescent Psychiatry. https://doi.org/10.1007/s00787-019-01398-2

Wichstrøm, L., Stenseng, F., Belsky, J., von Soest, T., & Hygen, B. W. (2019). Symptoms of internet gaming disorder in youth: Predictors and comorbidity. Journal of Abnormal Child Psychology, 47(1), 71–83. https://doi.org/10.1007/s10802-018-0422-x
 

2018

Bjørklund, O., Belsky, J., Wichstrøm, L., & Steinsbekk, S. (2018). Predictors of eating behavior in middle childhood: A hybrid fixed effects model. Developmental Psychology, 54(6), 1099–1110. https://doi.org/10.1037/dev0000504

Bjørklund, O., Wichstrøm, L., Llewellyn, C., & Steinsbekk, S. (2018). Emotional over- and undereating in children: A longitudinal analysis of child and contextual predictors. Child Development. https://doi.org/10.1111/cdev.13110

Skaug, S., Englund, K. T., & Wichstrøm, L. (2018). Young children's television viewing and the quality of their interactions with parents: A prospective community study. Scandinavian Journal of Psychology, 59(5), 503–510. https://doi.org/10.1111/sjop.12467

Steinsbekk, S., Barker, E. D., Llewellyn, C., Fildes, A., & Wichstrøm, L. (2018). Emotional feeding and emotional eating: Reciprocal processes and the influence of negative affectivity. Child Development, 89(4), 1234–1246. https://doi.org/10.1111/cdev.12756

Steinsbekk, S., & Wichstrøm, L. (2018). Cohort profile: The Trondheim Early Secure Study (TESS) – a study of mental health, psychosocial development and health behaviour from preschool to adolescence. International Journal of Epidemiology, 47(5), 1401. https://doi.org/10.1093/ije/dyy190

Zahl, T., Steinsbekk, S., & Wichstrøm, L. (2018). Predictors of physical activity in middle childhood: A fixed-effects regression approach. Frontiers in Public Health, 6, 305. https://doi.org/10.3389/fpubh.2018.00305
 

2017

Hygen, B. W., Belsky, J., Li, Z., Stenseng, F., Güzey, I. C., & Wichstrøm, L. (2017). Change in parenting, change in student–teacher relationships, and oxytocin receptor gene (OXTR): Testing a gene-×-environment (G×E) hypothesis in two samples. Developmental Psychology, 53(7), 1300–1315. https://doi.org/10.1037/dev0000333

Kvande, M. N., Belsky, J., & Wichstrøm, L. (2017). Selection for special education services: The role of gender and socio-economic status. European Journal of Special Needs Education, 33(4), 510–524. https://doi.org/10.1080/08856257.2017.1373493

Steinsbekk, S., Bonneville-Roussy, A., Fildes, A., Llewellyn, C., & Wichstrøm, L. (2017). Child and parent predictors of picky eating from preschool to school age. International Journal of Behavioral Nutrition and Physical Activity, 14, 87. https://doi.org/10.1186/s12966-017-0542-7

Steinsbekk, S., Klöckner, C. A., Fildes, A., Kristoffersen, P., Rognsås, S. R., & Wichstrøm, L. (2017). Body size estimation from early to middle childhood: Stability of underestimation, BMI, and gender effects. Frontiers in Psychology, 8, 2038. https://doi.org/10.3389/fpsyg.2017.02038

Steinsbekk, S., Llewellyn, C., Fildes, A., & Wichstrøm, L. (2017). Body composition impacts appetite regulation in middle childhood. A prospective study of Norwegian community children. International Journal of Behavioral Nutrition and Physical Activity, 14(1), 70. https://doi.org/10.1186/s12966-017-0528-5

Steinsbekk, S., Sveen, T. H., Fildes, A., Llewellyn, C., & Wichstrøm, L. (2017). Screening for pickiness – a validation study. International Journal of Behavioral Nutrition and Physical Activity, 14, 2. https://doi.org/10.1186/s12966-016-0458-7

Stenseng, F., Li, Z., Belsky, J., Hygen, B. W., Skalická, V., Güzey, I. C., & Wichstrøm, L. (2017). Peer problems and hyperactivity–impulsivity among Norwegian and American children: The role of 5-HTTLPR. Child Development. https://doi.org/10.1111/cdev.12766

Viddal, K. R., Berg-Nielsen, T. S., Belsky, J., & Wichstrøm, L. (2017). Change in attachment predicts change in emotion regulation particularly among 5-HTTLPR short-allele homozygotes. Developmental Psychology, 53(7), 1316–1329. https://doi.org/10.1037/dev0000321

Wichstrøm, L., Belsky, J., & Steinsbekk, S. (2017). Homotypic and heterotypic continuity of symptoms of psychiatric disorders from age 4 to 10 years: A dynamic panel model. Journal of Child Psychology and Psychiatry, 58(11), 1239–1247. https://doi.org/10.1111/jcpp.12754

Wichstrøm, L., Penelo, E., Rensvik Viddal, K., de la Osa, N., & Ezpeleta, L. (2017). Explaining the relationship between temperament and symptoms of psychiatric disorders from preschool to middle childhood: Hybrid fixed and random effects models of Norwegian and Spanish children. Journal of Child Psychology and Psychiatry. https://doi.org/10.1111/jcpp.12772

Zahl, T., Steinsbekk, S., & Wichstrøm, L. (2017). Physical activity, sedentary behavior, and symptoms of major depression in middle childhood. Pediatrics, 139(2), e20161711. https://doi.org/10.1542/peds.2016-171

2016

Husby, S. M., & Wichstrøm, L. (2016). Interrelationships and continuities in symptoms of oppositional defiant and conduct disorders from age 4 to 10 in the community. Journal of Abnormal Child Psychology. https://doi.org/10.1007/s10802-016-0210-4

Laugen, N. J., Jacobsen, K. H., Rieffe, C., & Wichstrøm, L. (2016). Predictors of psychosocial outcomes in hard-of-hearing preschool children. Journal of Deaf Studies and Deaf Education, 21(3), 259–267. https://doi.org/10.1093/deafed/enw005

Steinsbekk, S., Belsky, D., Guzey, I. C., Wardle, J., & Wichstrøm, L. (2016). Polygenic risk, appetite traits, and weight gain in middle childhood: A longitudinal study. JAMA Pediatrics, 170(2), e154472. https://doi.org/10.1001/jamapediatrics.2015.4472

Steinsbekk, S., Belsky, J., & Wichstrøm, L. (2016). Parental feeding and child eating: An investigation of reciprocal effects. Child Development. https://doi.org/10.1111/cdev.12546

Stenseng, F., Belsky, J., Skalická, V., & Wichstrøm, L. (2016). Peer rejection and attention deficit hyperactivity disorder symptoms: Reciprocal relations through ages 4, 6, and 8. Child Development, 87(2), 365–373. https://doi.org/10.1111/cdev.12471

Sveen, T. H., Berg-Nielsen, T. S., Lydersen, S., & Wichstrøm, L. (2016). Screening for persistent psychopathology in 4-year-old children. Pediatrics, 138(4), e20151648. https://doi.org/10.1542/peds.2015-1648

2015

Gresseth, Å. B., McNeil, C. B., & Wichstrøm, L. (2015). Screening for behavioral disorders with the Dyadic Parent-Child Interaction Coding System: Sensitivity, specificity, and core discriminative components. Child & Family Behavior Therapy, 37, 20–37. https://doi.org/10.1080/07317107.2015.1000228

Hygen, B. W., Belsky, J., Stenseng, F., Lydersen, S., Guzey, I. C., & Wichstrøm, L. (2015). Child exposure to serious life events, COMT and aggression: Testing differential susceptibility theory. Developmental Psychology, 51(8), 1098–1104. https://doi.org/10.1037/dev0000020

Kårstad, S. B., Wichstrøm, L., Reinfjell, T., Belsky, J., & Berg-Nielsen, T. S. (2015). What enhances the development of emotion understanding in young children? A longitudinal study of interpersonal predictors. British Journal of Developmental Psychology, 33(3), 340–354. https://doi.org/10.1111/bjdp.12095

Reinfjell, T., Kårstad, S. B., Berg-Nielsen, T. S., Luby, J. L., & Wichstrøm, L. (2015). Predictors of change in depressive symptoms from preschool to first grade. Development and Psychopathology. https://doi.org/10.1017/S0954579415001170

Skalická, V., Belsky, J., Stenseng, F., & Wichstrøm, L. (2015). Preschool-age problem behavior and teacher-child conflict in school: Direct and moderation effects by preschool organization. Child Development, 86(3), 955–964. https://doi.org/10.1111/cdev.12350

Skalická, V., Belsky, J., Stenseng, F., & Wichstrøm, L. (2015). Reciprocal relations between student-teacher relationship and children's behavioral problems: Moderation by child-care group size. Child Development, 86(5), 1557–1570. https://doi.org/10.1111/cdev.12400

Skalická, V., Stenseng, F., & Wichstrøm, L. (2015). Reciprocal relations between student–teacher conflict, children's social skills and externalizing behavior: A three-wave longitudinal study from preschool to third grade. International Journal of Behavioral Development, 39(5), 413–425. https://doi.org/10.1177/0165025415584187

Steinsbekk, S., & Wichstrøm, L. (2015). Predictors of change in BMI from the age of 4 to 8. Journal of Pediatric Psychology, 40(10), 1056–1064. https://doi.org/10.1093/jpepsy/jsv052

Steinsbekk, S., & Wichstrøm, L. (2015). Stability of sleep disorders from preschool to first grade and their bidirectional relationship with psychiatric symptoms. Journal of Developmental and Behavioral Pediatrics, 36(4), 243–251. https://doi.org/10.1097/DBP.0000000000000134

Stenseng, F., Belsky, J., Skalická, V., & Wichstrøm, L. (2015). Social exclusion predicts impaired self-regulation: A 2-year longitudinal panel study including the transition from preschool to school. Journal of Personality, 83(2), 212–220. https://doi.org/10.1111/jopy.12096

Viddal, K. R., Berg-Nielsen, T. S., Green, J., Wan, M. W., & Wichstrøm, L. (2015). Secure attachment promotes the development of effortful control in boys. Attachment & Human Development, 17, 319–335. https://doi.org/10.1080/14616734.2014.999098

2014

Hygen, B. W., Guzey, I. C., Belsky, J., Berg-Nielsen, T. S., & Wichstrøm, L. (2014). Catechol-O-methyltransferase Val158Met genotype moderates the effect of disorganized attachment on social development in young children. Development and Psychopathology, 26(4pt1), 947–961. https://doi.org/10.1017/S0954579414000492

Kårstad, S. B., Kvello, Ø., Wichstrøm, L., & Berg-Nielsen, T. S. (2014). What do parents know about their children's comprehension of emotions? Accuracy of parental estimates in a community sample of pre-schoolers. Child: Care, Health and Development, 40(3), 346–353. https://doi.org/10.1111/cch.12071

Stenseng, F., Belsky, J., Skalická, V., & Wichstrøm, L. (2014). Preschool social exclusion, aggression, and cooperation: A longitudinal evaluation of the need-to-belong and the social-reconnection hypotheses. Personality and Social Psychology Bulletin, 40, 1637–1647. https://doi.org/10.1177/0146167214554591

Wichstrøm, L., Belsky, J., Jozefiak, T., Sourander, A., & Berg-Nielsen, T. S. (2014). Predicting service use for mental health problems among young children. Pediatrics, 133(6), 1054–1060. https://doi.org/10.1542/peds.2013-3184

Wichstrøm, L., & Berg-Nielsen, T. S. (2014). Psychiatric disorders in preschoolers: The structure of DSM-IV symptoms and profiles of comorbidity. European Child & Adolescent Psychiatry, 23(7), 551–562. https://doi.org/10.1007/s00787-013-0486-7

2013

Solheim, E., Wichstrøm, L., Belsky, J., & Berg-Nielsen, T. S. (2013). Do time in child care and peer group exposure predict poor socioemotional adjustment in Norway? Child Development, 84(5), 1701–1715. https://doi.org/10.1111/cdev.12071

Steinsbekk, S., Berg-Nielsen, T. S., & Wichstrøm, L. (2013). Sleep disorders in preschoolers: Prevalence and comorbidity with psychiatric symptoms. Journal of Developmental and Behavioral Pediatrics, 34(9), 633–641. https://doi.org/10.1097/01.DBP.0000437636.33306.49

Sveen, T. H., Berg-Nielsen, T. S., Lydersen, S., & Wichstrøm, L. (2013). Detecting psychiatric disorders in preschoolers: Screening with the Strengths and Difficulties Questionnaire. Journal of the American Academy of Child & Adolescent Psychiatry, 52(7), 728–736. https://doi.org/10.1016/j.jaac.2013.04.010

Wichstrøm, L., Belsky, J., & Berg-Nielsen, T. S. (2013). Preschool predictors of childhood anxiety disorders: A prospective community study. Journal of Child Psychology and Psychiatry, 54(12), 1327–1336. https://doi.org/10.1111/jcpp.12116
 

2012

Berg-Nielsen, T. S., Solheim, E., Belsky, J., & Wichstrøm, L. (2012). Preschoolers' psychosocial problems: In the eyes of the beholder? Adding teacher characteristics as determinants of discrepant parent-teacher reports. Child Psychiatry and Human Development, 43, 393–413. https://doi.org/10.1007/s10578-011-0271-0

Berg-Nielsen, T. S., & Wichstrøm, L. (2012). The mental health of preschoolers in a Norwegian population-based study when their parents have symptoms of borderline, antisocial, and narcissistic personality disorders: At the mercy of unpredictability. Child and Adolescent Psychiatry and Mental Health, 6(1), 19. https://doi.org/10.1186/1753-2000-6-19

Ellis, L. C., Berg-Nielsen, T. S., Lydersen, S., & Wichstrøm, L. (2012). Smoking during pregnancy and psychiatric disorders in preschoolers. European Child & Adolescent Psychiatry, 21, 635–644. https://doi.org/10.1007/s00787-012-0300-y

Solheim, E., Berg-Nielsen, T. S., & Wichstrøm, L. (2012). The three dimensions of the Student-Teacher Relationship Scale: CFA validation in a preschool sample. Journal of Psychoeducational Assessment, 30, 250–263. https://doi.org/10.1177/0734282911423356

Wichstrøm, L., Angold, A., Berg-Nielsen, T. S., Egger, H. L., Solheim, E., & Sveen, T. H. (2012). Prevalence of psychiatric disorders in preschoolers. Journal of Child Psychology and Psychiatry, 53(6), 695–705. https://doi.org/10.1111/j.1469-7610.2011.02514.x