Ian R. Nicholson

572 total citations
21 papers, 441 citations indexed

About

Ian R. Nicholson is a scholar working on Clinical Psychology, Experimental and Cognitive Psychology and Social Psychology. According to data from OpenAlex, Ian R. Nicholson has authored 21 papers receiving a total of 441 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Clinical Psychology, 7 papers in Experimental and Cognitive Psychology and 3 papers in Social Psychology. Recurrent topics in Ian R. Nicholson's work include Obsessive-Compulsive Spectrum Disorders (3 papers), Cognitive Abilities and Testing (3 papers) and Schizophrenia research and treatment (3 papers). Ian R. Nicholson is often cited by papers focused on Obsessive-Compulsive Spectrum Disorders (3 papers), Cognitive Abilities and Testing (3 papers) and Schizophrenia research and treatment (3 papers). Ian R. Nicholson collaborates with scholars based in Canada and United States. Ian R. Nicholson's co-authors include Richard W. J. Neufeld, Herbert A. Leeper, Ross Norman, Ashok Malla, Leonard Cortese, Samuel F. Mikail, John L. Arnett, Sonya Tokmakejian, Praful Chandarana and Lise Bisnaire and has published in prestigious journals such as Journal of Abnormal Psychology, Schizophrenia Research and The Journal of Clinical Psychiatry.

In The Last Decade

Ian R. Nicholson

19 papers receiving 409 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ian R. Nicholson Canada 12 153 146 144 88 79 21 441
Liisa Kantojärvi Finland 11 113 0.7× 412 2.8× 196 1.4× 97 1.1× 51 0.6× 21 656
Jean-Louis Pédinielli France 13 90 0.6× 196 1.3× 160 1.1× 95 1.1× 65 0.8× 71 433
Gennaro Catone Italy 13 113 0.7× 297 2.0× 175 1.2× 159 1.8× 86 1.1× 35 584
Fung Kei Cheng Hong Kong 13 65 0.4× 186 1.3× 135 0.9× 138 1.6× 72 0.9× 56 595
Nicolás Seisdedos Cubero Spain 7 93 0.6× 149 1.0× 103 0.7× 109 1.2× 36 0.5× 21 423
W F Tsoi Singapore 16 57 0.4× 196 1.3× 191 1.3× 207 2.4× 62 0.8× 30 609
A. A. Brill United States 5 56 0.4× 218 1.5× 239 1.7× 62 0.7× 60 0.8× 9 648
J. Ray Hays United States 15 109 0.7× 268 1.8× 138 1.0× 100 1.1× 65 0.8× 62 590
Emily Bell United States 11 145 0.9× 79 0.5× 185 1.3× 97 1.1× 109 1.4× 20 408
J. Myers United States 12 182 1.2× 379 2.6× 84 0.6× 88 1.0× 48 0.6× 13 641

Countries citing papers authored by Ian R. Nicholson

Since Specialization
Citations

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

Fields of papers citing papers by Ian R. Nicholson

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ian R. Nicholson. 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 Ian R. Nicholson. The network helps show where Ian R. Nicholson may publish in the future.

Co-authorship network of co-authors of Ian R. Nicholson

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

All Works

20 of 20 papers shown
1.
Mikail, Samuel F. & Ian R. Nicholson. (2019). The national summit on the future of professional psychology training: Overview and recommendations.. Canadian Psychology/Psychologie canadienne. 60(4). 228–241. 8 indexed citations
2.
Nicholson, Ian R.. (2011). New technology, old issues: Demonstrating the relevance of the Canadian Code of Ethics for Psychologists to the ever-sharper cutting edge of technology.. Canadian Psychology/Psychologie canadienne. 52(3). 215–224. 17 indexed citations
3.
Nicholson, Ian R., et al.. (2006). Costs of predoctoral clinical psychology internship training in a Canadian health care setting.. Canadian Psychology/Psychologie canadienne. 47(4). 333–342. 7 indexed citations
4.
Arnett, John L., et al.. (2004). Psychology's Role in Health in Canada: Reaction to Romanow and Marchildon.. Canadian Psychology/Psychologie canadienne. 45(3). 228–232. 10 indexed citations
5.
Nicholson, Ian R., Diana Velikonja, & Lise Bisnaire. (2004). Hospital Psychology in Canada: Issues and Strategies. Healthcare Management Forum. 17(2). 30–35.
6.
Norman, Ross, et al.. (1998). The Relationship of Two Aspects of Perfectionism with Symptoms in a Psychiatric Outpatient Population. Journal of Social and Clinical Psychology. 17(1). 50–68. 27 indexed citations
7.
Nicholson, Ian R., et al.. (1997). Exaggerated TSH Responses to TRH in Depressed Patients With "Normal" Baseline TSH. The Journal of Clinical Psychiatry. 58(6). 266–270. 17 indexed citations
8.
Norman, Ross, et al.. (1996). Relationship of obsessive—compulsive symptomatology to anxiety, depression and schizotypy in a clinical population. British Journal of Clinical Psychology. 35(4). 553–566. 32 indexed citations
9.
Nicholson, Ian R., et al.. (1996). AIDS-related obsessive compulsive disorder: Deconditioning based on fluoxetine-induced inhibition of anxiety. Journal of Behavior Therapy and Experimental Psychiatry. 27(1). 51–56. 2 indexed citations
10.
Nicholson, Ian R.. (1995). Book Review: Cognitive Behavioral Treatment of Borderline Personality Disorder. The Canadian Journal of Psychiatry. 40(1). 53–54. 2 indexed citations
11.
Nicholson, Ian R.. (1995). Variability in BPRS definitions of positive and negative symptoms. Schizophrenia Research. 17(2). 177–185. 65 indexed citations
12.
Nicholson, Ian R.. (1994). Factors Involved in Failure to Keep Initial Appointments With Mental Health Professionals. Psychiatric Services. 45(3). 276–278. 28 indexed citations
13.
Leeper, Herbert A., et al.. (1994). Aerodynamic, Acoustic, and Perceptual Changes following Adenoidectomy. The Cleft Palate-Craniofacial Journal. 31(4). 263–270. 19 indexed citations
14.
Leeper, Herbert A., et al.. (1994). Laryngeal Airway Resistance of Older Men and Women as a Function of Vocal Sound Pressure Level. Journal of Speech Language and Hearing Research. 37(4). 789–799. 29 indexed citations
15.
Nicholson, Ian R. & Richard W. J. Neufeld. (1993). Classification of the schizophrenias according to symptomatology: A two-factor model.. Journal of Abnormal Psychology. 102(2). 259–270. 28 indexed citations
16.
Nicholson, Ian R. & Richard W. J. Neufeld. (1993). Classification of the schizophrenias according to symptomatology: A two-factor model.. Journal of Abnormal Psychology. 102(2). 259–270. 21 indexed citations
17.
Nicholson, Ian R.. (1992). A note on the generalizability of assortative mating coefficients for personality. Social Biology. 39(1-2). 151–157. 2 indexed citations
18.
Nicholson, Ian R. & Richard W. J. Neufeld. (1992). A dynamic vulnerability perspective on stress and schizophrenia.. American Journal of Orthopsychiatry. 62(1). 117–130. 69 indexed citations
19.
Nicholson, Ian R.. (1990). Are heritability estimates generalizable? Lack of evidence from cross‐sample correlations. Social Biology. 37(3-4). 147–161. 3 indexed citations
20.
Nicholson, Ian R., et al.. (1988). Genetic similarity theory, intelligence, and human mate choice. Ethology and Sociobiology. 9(1). 45–58. 55 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.

Explore authors with similar magnitude of impact

Rankless by CCL
2026