I. Janssen

2.5k total citations · 1 hit paper
18 papers, 1.9k citations indexed

About

I. Janssen is a scholar working on Psychiatry and Mental health, Philosophy and Clinical Psychology. According to data from OpenAlex, I. Janssen has authored 18 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Psychiatry and Mental health, 6 papers in Philosophy and 5 papers in Clinical Psychology. Recurrent topics in I. Janssen's work include Schizophrenia research and treatment (11 papers), Mental Health and Psychiatry (6 papers) and Psychosomatic Disorders and Their Treatments (3 papers). I. Janssen is often cited by papers focused on Schizophrenia research and treatment (11 papers), Mental Health and Psychiatry (6 papers) and Psychosomatic Disorders and Their Treatments (3 papers). I. Janssen collaborates with scholars based in Netherlands, South Africa and Norway. I. Janssen's co-authors include Jim van Os, Lydia Krabbendam, M. Bak, R. de Graaf, M. Hanssen, Wilma Vollebergh, Dagmar Versmissen, Inez Myin‐Germeys, Rob Bijl and Jelle Jolles and has published in prestigious journals such as The British Journal of Psychiatry, Psychological Medicine and Schizophrenia Bulletin.

In The Last Decade

I. Janssen

18 papers receiving 1.8k citations

Hit Papers

Childhood abuse as a risk factor for psychotic experiences 2003 2026 2010 2018 2003 100 200 300 400 500
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.

  1. Childhood abuse as a risk factor for psychotic experiences
    2003 572 citations I. Janssen, Lydia Krabbendam et al. Acta Psychiatrica Scandinavica profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
I. Janssen Netherlands 13 1.3k 950 540 416 312 18 1.9k
William D. Spaulding United States 22 1.4k 1.1× 852 0.9× 644 1.2× 465 1.1× 349 1.1× 73 2.1k
Mark R. Serper United States 29 1.2k 0.9× 919 1.0× 299 0.6× 445 1.1× 268 0.9× 68 2.1k
Michael Bagby Canada 14 1.2k 1.0× 897 0.9× 231 0.4× 593 1.4× 497 1.6× 25 1.9k
Mike Jackson United Kingdom 15 902 0.7× 577 0.6× 428 0.8× 360 0.9× 280 0.9× 30 1.5k
Craig Steel United Kingdom 23 1.7k 1.3× 1.1k 1.2× 713 1.3× 634 1.5× 395 1.3× 59 2.4k
Manon Hanssen Netherlands 9 1.5k 1.2× 670 0.7× 735 1.4× 380 0.9× 317 1.0× 12 1.9k
Mike Startup United Kingdom 27 1.3k 1.0× 1.6k 1.7× 520 1.0× 613 1.5× 640 2.1× 52 2.7k
Viviane Thewissen Netherlands 21 847 0.7× 482 0.5× 307 0.6× 683 1.6× 248 0.8× 35 1.5k
Dennis R. Combs United States 26 1.6k 1.3× 1.0k 1.1× 544 1.0× 915 2.2× 363 1.2× 56 2.5k
Catherine Gilvarry United Kingdom 24 1.0k 0.8× 829 0.9× 281 0.5× 150 0.4× 263 0.8× 45 1.7k

Countries citing papers authored by I. Janssen

Since Specialization
Citations

This map shows the geographic impact of I. Janssen'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 I. Janssen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites I. Janssen more than expected).

Fields of papers citing papers by I. Janssen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by I. Janssen. 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 I. Janssen. The network helps show where I. Janssen may publish in the future.

Co-authorship network of co-authors of I. Janssen

This figure shows the co-authorship network connecting the top 25 collaborators of I. Janssen. A scholar is included among the top collaborators of I. Janssen 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 I. Janssen. I. Janssen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

18 of 18 papers shown
1.
Jansen, Carel & I. Janssen. (2010). Talk about it: The effects of cryptic HIV/AIDS billboards. Communicatio. 36(1). 130–141. 11 indexed citations
2.
Hooren, Susan van, Dagmar Versmissen, I. Janssen, et al.. (2008). Social cognition and neurocognition as independent domains in psychosis. Schizophrenia Research. 103(1-3). 257–265. 127 indexed citations
3.
Versmissen, Dagmar, Susan van Hooren, I. Janssen, et al.. (2008). SOCIAL COGNITION AND NEUROCOGNITION AS INDEPENDENT DOMAINS IN PSYCHOSIS. Schizophrenia Research. 102(1-3). 131–131. 116 indexed citations
4.
Jabben, Nienke, Jim van Os, I. Janssen, Dagmar Versmissen, & Lydia Krabbendam. (2007). Cognitive alterations in groups at risk for psychosis: neutral markers of genetic risk or indicators of social disability?. Acta Psychiatrica Scandinavica. 116(4). 253–262. 12 indexed citations
5.
Versmissen, Dagmar, I. Janssen, Louise Johns, et al.. (2007). Verbal self-monitoring in psychosis: a non-replication. Psychological Medicine. 37(4). 569–576. 24 indexed citations
6.
Versmissen, Dagmar, Inez Myin‐Germeys, I. Janssen, et al.. (2007). Impairment of self-monitoring: part of the endophenotypic risk for psychosis. The British Journal of Psychiatry. 191(S51). s58–s62. 15 indexed citations
7.
Versmissen, Dagmar, I. Janssen, Inez Myin‐Germeys, et al.. (2007). Evidence for a relationship between mentalising deficits and paranoia over the psychosis continuum. Schizophrenia Research. 99(1-3). 103–110. 59 indexed citations
8.
Janssen, I., et al.. (2006). Attribution style and psychosis: evidence for an externalizing bias in patients but not in individuals at high risk. Psychological Medicine. 36(6). 771–778. 62 indexed citations
9.
Bak, M., Lydia Krabbendam, I. Janssen, et al.. (2005). Early trauma may increase the risk for psychotic experiences by impacting on emotional response and perception of control. Acta Psychiatrica Scandinavica. 112(5). 360–366. 80 indexed citations
10.
Versmissen, Dagmar, et al.. (2005). Data Gathering: Biased in Psychosis?. Schizophrenia Bulletin. 32(2). 341–351. 144 indexed citations
11.
Janssen, I., Lydia Krabbendam, M. Hanssen, et al.. (2005). Are apparent associations between parental representations and psychosis risk mediated by early trauma?. Acta Psychiatrica Scandinavica. 112(5). 372–375. 20 indexed citations
12.
Janssen, I., M. Hanssen, M. Bak, et al.. (2003). \nDiscrimination and delusional ideation. Radboud Repository (Radboud University). 211 indexed citations
13.
Janssen, I., Lydia Krabbendam, M. Bak, et al.. (2003). Childhood abuse as a risk factor for psychotic experiences. Acta Psychiatrica Scandinavica. 109(1). 38–45. 572 indexed citations breakdown →
14.
Janssen, I., Lydia Krabbendam, Jelle Jolles, & Jim van Os. (2003). Alterations in theory of mind in patients with schizophrenia and non‐psychotic relatives. Acta Psychiatrica Scandinavica. 108(2). 110–117. 209 indexed citations
15.
Janssen, I., M. Hanssen, M. Bak, et al.. (2003). Discrimination and delusional ideation Discrimination and delusional ideation. 1 indexed citations
16.
Krabbendam, Lydia, I. Janssen, Maarten Bak, et al.. (2002). Neuroticism and low self-esteem as risk factors for psychosis. Social Psychiatry and Psychiatric Epidemiology. 37(1). 1–6. 181 indexed citations
17.
Janssen, I., Manon Hanssen, M. Bak, et al.. (2002). Evidence that ethnic group effects on psychosis risk are confounded by experience of discrimination. European Psychiatry. 17(3). 83–84. 7 indexed citations
18.
Kessel, Ad Geurts van, A. Simons, I. Janssen, et al.. (1999). Ring Chromosomes in a Malignant Mesenchymoma. Cancer Genetics and Cytogenetics. 109(2). 119–122. 6 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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