Sebastian Hökby
About me
I have been involved in suicide-related research since 2011, at the National Centre for Suicide Research and Prevention (NASP), Solna campus. Since then, I have led projects at NASP/CHIS which are related to our aims to examine and report epidemiological findings and patterns in suicide rates, suicide prevention-related evidence-based recommendations, and expedite public health-related reports and communications. I am affiliated to the department of LIME, KI (Learning, Informatics, Management and Ethics, Karolinska Institutet), and to CHIS, SLSO (Centre for Informatics, Health economics, and Health Services Research, Region Stockholm). I have a background in experimental psychology (BSc., MSc., Psych.), and a doctoral degree (Ph.D) in medical science.
My doctoral thesis investigated adolescents' screen time with relevance for public health sciences.
'Screen Time Effects on Adolescent Mental health' (STEAM) (SV. 'Skärmtidseffekter på unga personers psykiska hälsa') - primarily examined Depressive symptoms as an health outcome of Screen time, and Coping behaviors and Sleep habits as buffering of such effects. The STEAM project utilized research data collected within two previous cluster randomized trials: the YAM and SUPREME trial.
My office is located at Granits väg 4, Solna (entrence floor).
Research
Suicidology, Psychological medicine, Screen time, Digital behaviors, Depression, Adolescence, Psychometrics, Public health, Cognitive biases, Longitudinal statistics
Teaching
I have taught statistics to students at the department of psychology, Stockholm University, and co-supervised students writing their BSc. or MSc. theses within the field of public health and mental health. I sometimes give guest lectures to other universities or public units. I sometimes organize journal clubs at NASP.
Selected publications
- Article: JOURNAL OF ADOLESCENCE. 2025;97(4):1113-1120Lemke T; Hokby S; Carli V; Hadlaczky G
- Article: PLOS GLOBAL PUBLIC HEALTH. 2025;5(4):e0004262Hokby S; Alvarsson J; Westerlund J; Carli V; Hadlaczky G
- Article: PLOS ONE. 2023;18(11):e0293580Lemke T; Hokby S; Wasserman D; Carli V; Hadlaczky G
- Article: INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH. 2023;20(4):3771Hökby S; Westerlund J; Alvarsson J; Carli V; Hadlaczky G
- Article: NORDIC JOURNAL OF PSYCHIATRY. 2021;75(7):487-493Hokby S; Westedund J; Blazeyska B; Hadlaczky G
- Article: JMIR MENTAL HEALTH. 2016;3(3):e31Hokby S; Hadlaczky G; Westerlund J; Wasserman D; Balazs J; Germanavicius A; Machin N; Meszaros G; Sarchiapone M; Varnik A; Varnik P; Westerlund M; Carli V
Articles
- Article: NORDIC JOURNAL OF PSYCHIATRY. 2023;77(7):721-730Oskarsson H; Mehlum L; Titelman D; Isometsa E; Erlangsen A; Nordentoft M; Mittendorfer-Rutz E; Hokby S; Tomasson H; Palsson SP
- Article: MOLECULAR PSYCHIATRY. 2023;28(2):901-907Ploederl M; Westerlund J; Hokby S; Hadlaczky G; Hengartner MP
- Article: INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH. 2021;18(8):4001Ramberg I-L; Hokby S; Karlsson L; Hadlaczky G
- Article: FRONTIERS IN PSYCHOLOGY. 2020;11:1113Westerlund M; Hokby S; Hadlaczky G
- Article: FRONTIERS IN PSYCHIATRY. 2018;9:116Hadlaczky G; Hokby S; Mkrtchian A; Wasserman D; Balazs J; Machin N; Sarchiapone M; Sisask M; Carli V
- Article: NORDIC JOURNAL OF PSYCHIATRY. 2018;72(1):72-74Hadlaczky G; Hokby S
- Article: INTERNATIONAL REVIEW OF PSYCHIATRY. 2014;26(4):467-475Hadlaczky G; Hokby S; Mkrtchian A; Carli V; Wasserman D
All other publications
- Rapid communication: SOCIALMEDICINSK TIDSKRIFT. 2026;102(6):760Skärmtidseffekter på ungdomars psykiska hälsa.Hökby S
- Thesis / dissertation: KAROLINSKA INSTITUTET. 2025Hökby S
- Report: STEAM REPORT SERIES. 2024;:1-4Social media may increase girls’ anxiety levels by decreasing their self-esteemHökby S
- Report: FAKTABLAD. 2023;:1-2Lemke T
- Report: STEAM REPORT SERIES. 2023;:1-2Sämre psykisk hälsa bland unga när skärmtid försämrar stresshanteringHökby S
- Report: NASP REPORTS. 2022;:3-12Den psykiska hälsan bland 10 299 högstadieelever i Stockholms län: Tvärsnittsanalyser av enkätdata (2016-2019)Hökby S
- Conference publication: EUROPEAN PSYCHIATRY. 2014;29Carli V; Hadlaczky G; Hokby S; Sarchiapone M; Wasserman D
- Conference publication: EUROPEAN PSYCHIATRY. 2014;29:1Carli V; Hadlaczky G; Hökby S; Sarchiapone M; Wasserman D
Employments
- Affiliated to Research, Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, 2025-2028
Degrees and Education
- Ph.D., Screen Time Effects on Adolescent Mental health, Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, 2025
- MSc. Psychology, Deparment of Psychology, Stockholm University, 2024
- BSc. Psychology, Psychology, Department of Psychology, Stockholm University, 2024
News from KI
Events from KI
News from external media
- STUDY LINKS TEEN GIRLS’ SCREEN TIME TO SLEEP DISRUPTIONS AND DEPRESSION. 2025Hökby S
