Steinsbekk, S., Bjørklund, O., Valkenburg, P., Nesi, P., 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, Volume 156, 108235.

Bjorklund, O., Wichstrøm, L. Llewellyn, C., Steinsbekk, S (2024). Validation of the Adult Eating Behavior Questionnaire in a Norwegian Sample of Adolescents. Appetite. Volume 192, 107116.

Wichstrøm, T. & Wichstrom, L. (2024). Childhood Predictors of Nonsuicidal Self-Injury in Adolescence: A Birth Cohort Study. Journal of the American Academy of Child and Adolescent Psychiatry. (In press).

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. Apr 9. (Epub ahead of print).  

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. J Child Psychol Psychiatry, 65. 6. 753-763. 


Morken, I., 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. 

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, Volume 147, October 2023, 107859.

Asgarabad, H., 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, Vol 64:7, p. 1045–1055.

Nobakht, H., Steinsbekk, S., Wichstrøm, L. (2023) 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. 

Laugen, N., J.; Kårstad, S.B., Reinfjell, T., Wichstrøm, L. (2023). The development of emotion understanding in children: The importance of parents, teachers, and peers. Developmental Psychology, Sep 21. Epub ahead of print. 

Johnsen, I.B., Wichstrøm, L., Dahllöf, G. (2023). Prevalence and stability of blood-injection-injury fobia in childhood: - A prospective community study in Norway. Acta Paedriatica, 113, p. 105-112. 

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. 


Husby, S.M., Skalicka, 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, Vol 51, p. 331–342. 

Halse M, Steinsbekk S, Hammar Å, Wichstrøm L. (2022) Longitudinal relations between impaired executive function and symptoms of psychiatric disorders in childhood. J Child Psychol Psychiatry, 63:12 (2022), p. 1574–1582. 

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), p. 1615-1623. 

Wichstrøm L, Borgen AE, Steinsbekk S. (2022). Parental personality disorder symptoms and children's social skills: a prospective community study. Eur Child Adolesc Psychiatry.  

Hygen, B. W., Belsky, J., Stenseng, F., Steinsbekk, S., Wichstrøm, L., & Skalicka, V. (2022). Longitudinal relations between gaming, physical activity, and athletic self-esteem. Computers in Human Behavior, Volume 132, July 2022, 107252. 

Stenseng, F., Tingstad, E. B., Wichstrøm, L., & Skalicka, V. (2022). Social withdrawal and academic achievement, intertwined over years? Bidirectional effects from primary to upper secondary school. British Journal of Educational Psychology. 

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, Volume 27, June 2022, 101795.


Garfield, V., Llewellyn, Cl., Wichstrøm, L., Steinsbekk, S. (2021).  Shared genetic architecture underlying sleep and weight in children. Sleep Medicine 2021 Volum 83. p. 40 - 44. 
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  
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 
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

Ranum, B., 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 2021 ;Volum 13. p. 163-175.

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 2021 Volum 45. p. 663 - 678.

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. 


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. 

Steinsbekk, S., Wichstrøm, L., Stenseng, F., Nesi, J., Hygen, B.W., Skalicka, V. (2020) The impact of social media use on appearance self-esteem from childhood to adolescence – A 3-wave community study. Computers in Human Behavior, 114. 

Hygen, B., Skalicka, 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. The Journal of Child Psychology and Psychiatry, 61 (8), p. 890-898. 

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. 

Steinsbekk S, Bjørklund O, Llewellyn C, Wichstrøm L. (2020). Temperament as a predictor of eating behavior in middle childhood - A fixed effects approach. Appetite. Feb 22.

Ranum BM, Wichstrøm L, Pallesen S, Steinsbekk S. (2020). Prevalence and stability of insufficient sleep measured by actigraphy: a prospective community study. Pediatric Research. Jan 31.


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).

Stenseng, F., Hygen, B. W., & L. Wichstrøm (2019). Time Spent Gaming and Psychiatric Symptoms in Childhood: Cross-Sectional Associations and Longitudinal Effects. European Child and Adolescent Psychiatry.  

Hygen, B. W., Belsky, J., Stenseng, F., Skalicka, V., Kvande, M. N., Zahl‐Thanem, T., & Wichstrøm, L. (2019). Time Spent Gaming and Social Competence in Children: Reciprocal Effects Across Childhood. Child development. 

Skalicka, Vera; Hygen, Beate Wold; Stenseng, Frode; Berg Kårstad, Silja; Wichstrøm, Lars. (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

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. 

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. 13. 

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.

Wichstrøm, Lars; Stenseng, Frode; Belsky, Jay; von Soest, Tilmann; Hygen, Beate Wold. (2019) 
Symptoms of Internet Gaming Disorder in Youth: Predictors and Comorbidity. Journal of Abnormal Child Psychology 2018 ;Volum 47. s. 71-83


Skaug, Silje; Englund, Kjellrun Thora; Wichstrøm, Lars. (2018) Young children's television viewing and the quality of their interactions with parents: A prospective community study. Scandinavian Journal of Psychology 2018 ;Volum 59.(5) s. 503-510

Zahl, T., Steinsbekk, S., Wichstrøm, L. (2018). Predictors of Physical Activity in Middle Childhood. A Fixed-Effects Regression Approach. Frontiers in Public Health. 24:6; 305.  

Bjorklund, 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. 

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, 29. 

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.

Steinsbekk, Barker, E., Llewellyn, Cl, Fildes, A., Wichstrøm, L. (2018). Emotional Feeding and Emotional Eating: Reciprocal Processes and the Influence of Negative Affectivity. Child Development, 89, 4, 1234-1246. 


Steinsbekk, S., Klockner, 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 Psychol. 8:2038. 

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.

Zahl, T, Steinsbekk, S, & Wichstrøm, L. (2017). Physical activity, sedentary behavior, and symptoms of major depression in middle childhood. Pediatrics, 139, 2, e20161711. 

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. 

Stenseng, F., Li, Z., Belsky, J., Hygen, B. W., Skalicka, V., Guzey, I. C. and Wichstrøm, L. (2017), Peer Problems and Hyperactivity–Impulsivity Among Norwegian and American Children: The Role of 5-HTTLPR. Child Development. 

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. 

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. J Child Psychol Psychiatry. 

Steinsbekk, S., Bonneville, 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. 

Steinsbekk, S., Barker, T., Llewellyn, C., Fildes, A., Wichstrøm, L. (2017). Emotional Feeding and Emotional Eating: Reciprocal Processes and the Influence of Negative Affectivity. Child Development.

Wichstrøm, L, Belsky, J., Steinsbekk, S. (2017). Homotypic and Heterotypic Continuity of Symptoms of Psychiatric Disorders from age 4-10 Years. A Dynamic Panel Model. Journal of Child Psychology and Psychiatry. 

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, 30;14(1):70. 

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.


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. 

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. 

Stenseng, F., Belsky, J., Skalicka, V., & Wichstrøm, L. (2016). Peer Rejection and Attention Deficit Hyperactivity Disorder Symptoms: Reciprocal Relations through Ages 4, 6, and 8. Child Development. 

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. 

Steinsbekk, S., Belsky, D., Guzey, I.S., Wardle, J., & Wichstrøm, L. (2016). Polygenic Risk, Appetite Traits, and Weight Gain in Middle Childhood: A Longitudinal Study. JAMA Pediatrics. Feb 1;170(2):e154472. 

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


Steinsbekk, S. & Wichstrøm, L. (2015). Predictors of change in BMI from the age of 4 to 8. Journal of Pediatric Psychology, 40, 1056-1064. 

Skalicka, 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. 

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. doi:10.1017/S0954579415001170. 

Stenseng, F., Belsky, J., Skalicka, 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. 

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. 

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. 

Skalicka, 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, 955-964. 

Skalicka, V., Belsky, J., Stenseng, F., & Wichstrøm, L. (2015). Reciprocal relations between student-teacher relationship and children’s behavioral problems: their moderation by childcare group size. Child Development, 85 (5), 1557-1570. 

Viddal, K., Berg-Nielsen, T.S., Green, J., Wan M.W., & Wichstrøm, L. (2015) Secure attachment promotes the development of effortful control in boys. Attachment and Human Development, 17, 319-335. 

Steinsbekk S. & Wichstrøm L. (2015). Stability of sleep disorders from preschool to first grade and their bi-directional relationship with psychiatric symptoms. Journal of Developmental and Behavioral Pediatrics, 36 (4), 243-251. 

Hygen, B.P., Guzey, C., Belsky, J., Berg-Nielsen, T.S., Wichstrøm, L. (2015). COMT Val158Met Moderates the Effect of Disorganized Attachment on Social Development in Young Children. Development and Psychopathology, 51, 1098-1104. 

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.


Stenseng, F., Belsky, J., Skalicka, 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. 

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. 

Stenseng, F., Belsky, J., Skalicka, V., & Wichstrøm, L. (2014). Social Exclusion Predicts an Attenuated Development of Self-Regulation – A 2-Year Longitudinal Panel Study Including the Transition from Preschool to School. Journal of Personality, 83, 212-220. 

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.

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. 


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, 633-641. 

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 and Adolescent Psychiatry, 52, 728-736. 

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, 1327-1336. 

Solheim, E., Wichstrøm, L., Belsky J. & Berg-Nielsen, T.S., (2013). Do Time in Childcare and Peer Group Exposure Predict Poor Socioemotional Adjustment in Norway?” Child Development, 84, 1701-1715.


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, 9;6(1):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. 

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, 695-705. 

Berg-Nielsen, T.S., Solheim, E., Belsky, J., & Wichstrøm, L. (2012). Preschoolers’ psychosocial problems: in the eye of the beholder? Adding teacher characteristics as determinants of discrepant parent-teacher reports. Child Psychiatry and Human Development, 43, 393-413. 

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 Psychosocial Assessment, 30, 250-263.