Ron Hijman

4.5k citations

50 papers · 3.5k indexed · 1 hit paper · h-index 25

Psychiatry and Mental health top 0.5%
Cognitive Neuroscience top 2%
Experimental and Cognitive Psychology top 2%
Clinical Psychology top 5%
Cardiology and Cardiovascular Medicine top 5%

Co-authors: René S. Kahn Edward H.F. de Haan Diederik van Dijk Lucia Valmaggia Laura DeHaan Tonko Hoffman Annemieke M. A. Keizer Jan M. van Ree
Topics: Schizophrenia research and treatment (15 papers)Intensive Care Unit Cognitive Disorders (8 papers)Cardiac and Coronary Surgery Techniques (8 papers)
Cited by: Psychiatry and Mental health Developmental Neuroscience Critical Care and Intensive Care Medicine
Journals: JAMA American Journal of Psychiatry Annals of Neurology
Partner nations: Netherlands United Kingdom United States

In The Last Decade

Ron Hijman

49 papers receiving 3.4k 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.

Memory Impairment in Schizophrenia: A Meta-Analysis

1999 836 citations Ron Hijman, Edward H.F. de Haan et al. profile →

Peers

Countries citing papers authored by Ron Hijman

Since Specialization

Citations

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

Fields of papers citing papers by Ron Hijman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ron Hijman

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

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Is there change in intelligence quotient in chronically ill schizophrenia patients? A longitudinal study in twins discordant for schizophrenia 2012 ·Psychological Medicine ·Anna M. Hedman,Neeltje E.M. van Haren,G. Caroline M. van Baal,Rachel G.H. Brans,Ron Hijman,René S. Kahn,Hilleke E. Hulshoff Pol	10
2	Effect of cannabis use on the course of schizophrenia in male patients: A prospective cohort study 2012 ·Schizophrenia Research ·D. van Dijk,Maarten W.J. Koeter,Ron Hijman,René S. Kahn,Wim van den Brink	49
3	Neuropsychological performance is related to current social and occupational functioning in veterans with posttraumatic stress disorder 2008 ·Depression and Anxiety ·Elbert Geuze,Eric Vermetten,Carien S. de Kloet,Ron Hijman,H.G.M. Westenberg	70
4	Cognitive and Cardiac Outcomes 5 Years After Off-Pump vs On-Pump Coronary Artery Bypass Graft Surgery 2007 ·JAMA ·Diederik van Dijk,(unknown),Ron Hijman,Hendrik M. Nathoe,Cornelius Borst,Erik W.L. Jansen,Diederick E. Grobbee,Peter P.T. de Jaegere,Cor J. Kalkman,for the Mexican Nephrology Collaborative Study Group	188
5	Cognitive Outcomes Five Years After Not Undergoing Coronary Artery Bypass Graft Surgery 2007 ·The Annals of Thoracic Surgery ·Diederik van Dijk,Karel G.M. Moons,Hendrik M. Nathoe,(unknown),Cornelius Borst,Annemieke M. A. Keizer,Cor J. Kalkman,Ron Hijman	23
6	The five-factor model of the Positive and Negative Syndrome Scale II: A ten-fold cross-validation of a revised model 2006 ·Schizophrenia Research ·(unknown),Tonko Hoffman,(unknown),Ron Hijman,Laura DeHaan,(unknown),(unknown),Lucia Valmaggia,(unknown),(unknown)	443
7	The incidence of cognitive decline after (not) undergoing coronary artery bypass grafting: the impact of a controlled definition 2005 ·Acta Anaesthesiologica Scandinavica ·Annemieke M. A. Keizer,Ron Hijman,Cor J. Kalkman,René S. Kahn,Diederik van Dijk,(unknown)	60
8	Cognitive basis of hallucinations in schizophrenia: role of top-down information processing 2003 ·Schizophrenia Research ·André Alemán,K.B.E. Böcker,Ron Hijman,Edward H.F. de Haan,René S. Kahn	132
9	Cognitive and emotional characteristics of alexithymia 2003 ·Journal of Psychosomatic Research ·Junilla K. Larsen,Nico Brand,Bob Bermond,Ron Hijman	182
10	Global Intellectual Impairment Does Not Accelerate With Age in Patients With Schizophrenia: A Cross-Sectional Analysis 2003 ·Schizophrenia Bulletin ·Ron Hijman,Hilleke E. Hulshoff Pol,Margriet M. Sitskoorn,René S. Kahn	21
11	Schizophrenic patients without neuropsychological deficits: subgroup, disease severity or cognitive compensation? 2002 ·Psychiatry Research ·E. A. E. Holthausen,Durk Wiersma,Margriet M. Sitskoorn,Ron Hijman,Peter Dingemans,Aart H. Schene,Robert J. van den Bosch	70
12	CAREGIVER BURDEN IN RECENT-ONSET SCHIZOPHRENIA AND SPECTRUM DISORDERS: THE INFLUENCE OF SYMPTOMS AND PERSONALITY TRAITS 2002 ·The Journal of Nervous and Mental Disease ·(unknown),Peter Dingemans,Aart H. Schene,Donald H. Linszen,Durk Wiersma,(unknown),Wiepke Cahn,Ron Hijman	62
13	Subclinical dopaminergic dysfunction in asymptomatic Parkinson's disease patients' relatives with a decreased sense of smell 2001 ·Annals of Neurology ·Henk W. Berendse,Jan Booij,(unknown),Paul Bergmans,Ron Hijman,Johannes C. Stoof,Erik Ch. Wolters	229
14	Component structure of the Positive And Negative Syndrome Scale (PANSS) in patients with recent-onset schizophrenia and spectrum disorders 2000 ·Psychopharmacology ·(unknown),Peter Dingemans,Aart H. Schene,Don Linszen,Henderikus Knegtering,E. A. E. Holthausen,Wiepke Cahn,Ron Hijman	75
15	Neuropsychological dysfunctions in siblings discordant for schizophrenia 2000 ·Psychiatry Research ·Wouter Staal,Ron Hijman,Hilleke E. Hulshoff Pol,(unknown)	28
16	Neurocognitive dysfunction after coronary artery bypass surgery: A systematic review 2000 ·Journal of Thoracic and Cardiovascular Surgery ·Diederik van Dijk,Annemieke M. A. Keizer,Wim Jan van Boven,(unknown),(unknown),Ron Hijman	207
17	Effects of Context on Judgements of Odor Intensities in Humans 1998 ·Chemical Senses ·Hilleke E. Hulshoff Pol,Ron Hijman,William F.C. Baaré,Jan M. van Ree	34
18	Perception, mental imagery and reality discrimination in hallucinating and non-hallucinating schizophrenic patients 1996 ·Journal of the International Neuropsychological Society ·K.B.E. Böcker,(unknown),Ron Hijman,Edward H.F. de Haan	2
19	Efficacy and tolerance of D-cycloserine in drug-free schizophrenic patients 1996 ·Biological Psychiatry ·Bart N.M. van Berckel,Ron Hijman,Jeroen A. van der Linden,H.G.M. Westenberg,Jan M. van Ree,René S. Kahn	83
20	Pharmacokinetics of DGAVP in plasma following intranasal and oral administration to healthy subjects 1994 ·Peptides ·H.G.M. Westenberg,Ron Hijman,V.M. Wiegant,F. Laczi,Jan M. van Ree	1

About Ron Hijman

Ron Hijman is a scholar working on Critical Care and Intensive Care Medicine, Psychiatry and Mental health and Cognitive Neuroscience, having authored 50 papers that have together received 3.5k indexed citations. Recurring topics across this work include Schizophrenia research and treatment (15 papers), Intensive Care Unit Cognitive Disorders (8 papers) and Cardiac and Coronary Surgery Techniques (8 papers). The work is most often cited by research in Psychiatry and Mental health (1.6k citations), Developmental Neuroscience (249 citations) and Critical Care and Intensive Care Medicine (301 citations). Ron Hijman has collaborated with scholars based in Netherlands, United Kingdom and United States. Frequent co-authors include René S. Kahn, Edward H.F. de Haan, Diederik van Dijk, Lucia Valmaggia, Laura DeHaan, Tonko Hoffman, Annemieke M. A. Keizer, Jan M. van Ree, Junilla K. Larsen and Nico Brand. Their work appears in journals such as JAMA, American Journal of Psychiatry and Annals of Neurology.

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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