Marja Leonhardt

530 total citations · 1 hit paper
36 papers, 302 citations indexed

About

Marja Leonhardt is a scholar working on Clinical Psychology, Social Psychology and General Health Professions. According to data from OpenAlex, Marja Leonhardt has authored 36 papers receiving a total of 302 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Clinical Psychology, 9 papers in Social Psychology and 9 papers in General Health Professions. Recurrent topics in Marja Leonhardt's work include COVID-19 and Mental Health (5 papers), Mental Health Treatment and Access (5 papers) and Migration, Health and Trauma (4 papers). Marja Leonhardt is often cited by papers focused on COVID-19 and Mental Health (5 papers), Mental Health Treatment and Access (5 papers) and Migration, Health and Trauma (4 papers). Marja Leonhardt collaborates with scholars based in Norway, Germany and United Kingdom. Marja Leonhardt's co-authors include Lars Lien, Tore Bonsaksen, Johannes C. Lauscher, Martin E. Kreis, Katja Aschenbrenner, Konrad Neumann, Annette Løvheim Kleppang, Mads Holten-Andersen, Benjamin Weixler and Tonje Holte Stea and has published in prestigious journals such as PLoS ONE, Annals of Surgery and International Journal of Environmental Research and Public Health.

In The Last Decade

Marja Leonhardt

29 papers receiving 294 citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Are There Differences in Video Gaming and Use of Social Media among Boys and Girls?—A Mixed Methods Approach

2021 114 citations Marja Leonhardt et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Marja Leonhardt Norway	9	101	76	59	47	36	36	302
Dheeraj Kattula India	9	101 1.0×	43 0.6×	135 2.3×	15 0.3×	32 0.9×	31	317
Cathy Roche United States	11	96 1.0×	137 1.8×	91 1.5×	26 0.6×	34 0.9×	23	388
Sônia Maria Marques Gomes Bertolini Brazil	9	50 0.5×	70 0.9×	30 0.5×	19 0.4×	46 1.3×	122	377
Ann Harris United Kingdom	14	37 0.4×	94 1.2×	41 0.7×	33 0.7×	20 0.6×	29	382
Kun‐Hua Lee Taiwan	12	112 1.1×	44 0.6×	166 2.8×	132 2.8×	50 1.4×	30	438
Libby Brockman United States	8	190 1.9×	55 0.7×	50 0.8×	11 0.2×	26 0.7×	10	333
Kathleen McCann United States	3	35 0.3×	43 0.6×	65 1.1×	18 0.4×	43 1.2×	8	216
David Padilla-Góngora Spain	10	45 0.4×	22 0.3×	70 1.2×	36 0.8×	36 1.0×	24	287
Hannah Chatwin Denmark	9	95 0.9×	33 0.4×	61 1.0×	32 0.7×	17 0.5×	26	302
Elizabeth Fraser United States	9	54 0.5×	51 0.7×	65 1.1×	9 0.2×	32 0.9×	25	307

Countries citing papers authored by Marja Leonhardt

Since Specialization

Citations

This map shows the geographic impact of Marja Leonhardt's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Marja Leonhardt with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Marja Leonhardt more than expected).

Fields of papers citing papers by Marja Leonhardt

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Marja Leonhardt. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Marja Leonhardt. The network helps show where Marja Leonhardt may publish in the future.

Co-authorship network of co-authors of Marja Leonhardt

This figure shows the co-authorship network connecting the top 25 collaborators of Marja Leonhardt. A scholar is included among the top collaborators of Marja Leonhardt based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Marja Leonhardt. Marja Leonhardt is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Kleppang, Annette Løvheim, Curt Hagquist, Tonje Holte Stea, et al.. (2025). Social media use, gaming and quality of life among adolescents in Norway: results from the Young-HUNT study. Health and Quality of Life Outcomes. 23(1). 113–113.

Leonhardt, Marja, et al.. (2025). Mental health and energy drink consumption among Norwegian adolescents; a cross-sectional study. BMC Public Health. 25(1). 2158–2158.

Leonhardt, Marja, et al.. (2025). Beyond gender - the impostor phenomenon and the role of gender typing, social comparison orientation, and perceived minority status. Acta Psychologica. 258. 105250–105250.

Kleppang, Annette Løvheim, et al.. (2024). Health assessments of refugee minors arriving in Norway – a modified Delphi study among health professionals in primary care settings. BMC Public Health. 24(1). 2487–2487. 1 indexed citations

Stea, Tonje Holte, Tore Bonsaksen, Pierre Smith, et al.. (2024). Are social pressure, bullying and low social support associated with depressive symptoms, self-harm and self-directed violence among adolescents? A cross-sectional study using a structural equation modeling approach. BMC Psychiatry. 24(1). 239–239. 6 indexed citations

Leonhardt, Marja, Jørgen G. Bramness, Eline Borger Rognli, & Lars Lien. (2024). Frequency and patterns of substance-induced psychosis in persons with concurrent mental health and substance use disorders during the COVID-19 pandemic: A Norwegian register-based cohort study. European Psychiatry. 67(1). e82–e82. 1 indexed citations

Lien, Lars, et al.. (2023). Time trends in self-reported depressive symptoms, prescription of antidepressants, sedatives and hypnotics and the emergence of social media among Norwegian adolescents. PLoS ONE. 18(12). e0295384–e0295384. 4 indexed citations

Bramness, Jørgen G., Marja Leonhardt, Geert Dom, et al.. (2023). Education and Training in Addiction Medicine and Psychology across Europe: A EUFAS Survey. European Addiction Research. 30(3). 127–137. 8 indexed citations

Bonsaksen, Tore, et al.. (2023). Negative social media-related experiences and lower general self-efficacy are associated with depressive symptoms in adolescents. Frontiers in Public Health. 10. 1037375–1037375. 12 indexed citations

10.

Sørensen, Torgeir, et al.. (2023). Promoting Social Participation and Recovery Using Virtual Reality–Based Interventions Among People With Mental Health and Substance Use Disorders: Qualitative Study. JMIR Formative Research. 7. e46136–e46136. 2 indexed citations

11.

Leistner, Rasmus, Marja Leonhardt, Konrad Neumann, et al.. (2022). Is There an Association between Intra-Operative Detection of Pathogens in Subcutaneous Tissue and Surgical Site Infections? Results from a Prospective Study. Surgical Infections. 23(4). 372–379. 2 indexed citations

12.

Leonhardt, Marja, et al.. (2022). Physical comorbidity among patients attending mental health services at Windhoek Central Hospital, Namibia. Pan African Medical Journal. 41. 270–270. 3 indexed citations

13.

Leonhardt, Marja, et al.. (2022). Risk factors for cardiovascular disease among people with mental illness in Namibia. Ghana Medical Journal. 56(4). 285–294.

14.

Lien, Lars, et al.. (2022). Association between cannabis use and physical health problems in Norwegian adolescents: a cross-sectional study from the youth survey Ungdata. BMC Public Health. 22(1). 661–661. 4 indexed citations

15.

Leonhardt, Marja, et al.. (2022). How did the first COVID-19 lockdown affect persons with concurrent mental health and substance use disorders in Norway? A qualitative study. BMC Psychiatry. 22(1). 179–179. 7 indexed citations

16.

Lauscher, Johannes C., Johan Friso Lock, Katja Aschenbrenner, et al.. (2020). Validation of the German Classification of Diverticular Disease (VADIS)—a prospective bicentric observational study. International Journal of Colorectal Disease. 36(1). 103–115. 11 indexed citations

17.

Leonhardt, Marja, Konrad Neumann, Lisa Hartmann, et al.. (2019). Reduction of Postoperative Wound Infections by Antiseptica (RECIPE)?. Annals of Surgery. 272(1). 55–64. 22 indexed citations

18.

Leonhardt, Marja, Katja Aschenbrenner, Martin E. Kreis, & Johannes C. Lauscher. (2019). Does migrant background predict to what extent colorectal cancer patients want to be informed about their life expectancy? – a cross-sectional analysis. International Journal for Equity in Health. 18(1). 192–192. 1 indexed citations

19.

Leonhardt, Marja, Falk Liebers, Clermont E. Dionne, & Ute Latza. (2014). Cross-cultural adaptation of the delphi definitions of low back pain prevalence (German DOLBaPP). BMC Musculoskeletal Disorders. 15(1). 397–397. 3 indexed citations

20.

Agelink, M.W., et al.. (1998). Nutzen und Risiken der Elektrokrampfbehandlung (EKT) bei älteren Patienten mit kardiovaskulären Risikofaktoren. Der Nervenarzt. 69(1). 70–75. 5 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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