World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Psychology 69 2314 2112 139 126 126 53571

Robert C. Gardner publications per year

The chart shows the history of publications by Robert C. Gardner between 1958 and 2021, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Robert C. Gardner published across 64 years, from 1958 to 2021, averaging 2.6 papers a year. Output peaked at 8 publications in 1975. 2 of the 168 publications appeared in the last two years.

No. of publications
2 4 6 8
Bar chart. Horizontal axis: year, 1958 to 2021. Vertical axis: number of publications, 0 to 8. Peak 8 publications in 1975. 1958: 3 publications 1959: 2 publications 1960: 2 publications 1961: 0 publications 1962: 0 publications 1963: 1 publication 1964: 1 publication 1965: 2 publications 1966: 0 publications 1967: 1 publication 1968: 4 publications 1969: 3 publications 1970: 4 publications 1971: 0 publications 1972: 3 publications 1973: 5 publications 1974: 6 publications 1975: 8 publications 1976: 5 publications 1977: 4 publications 1978: 6 publications 1979: 5 publications 1980: 3 publications 1981: 3 publications 1982: 2 publications 1983: 3 publications 1984: 3 publications 1985: 4 publications 1986: 1 publication 1987: 4 publications 1988: 5 publications 1989: 3 publications 1990: 7 publications 1991: 7 publications 1992: 2 publications 1993: 5 publications 1994: 6 publications 1995: 5 publications 1996: 2 publications 1997: 2 publications 1998: 0 publications 1999: 2 publications 2000: 6 publications 2001: 3 publications 2002: 0 publications 2003: 4 publications 2004: 2 publications 2005: 0 publications 2006: 2 publications 2007: 0 publications 2008: 2 publications 2009: 2 publications 2010: 2 publications 2011: 0 publications 2012: 2 publications 2013: 2 publications 2014: 1 publication 2015: 0 publications 2016: 1 publication 2017: 0 publications 2018: 2 publications 2019: 1 publication 2020: 0 publications 2021: 2 publications
1958 2021

168 publications in total across all disciplines

View publications per year as a table
Robert C. Gardner: publications per year, 1958 to 2021
Year Publications
1958 3
1959 2
1960 2
1961 0
1962 0
1963 1
1964 1
1965 2
1966 0
1967 1
1968 4
1969 3
1970 4
1971 0
1972 3
1973 5
1974 6
1975 8
1976 5
1977 4
1978 6
1979 5
1980 3
1981 3
1982 2
1983 3
1984 3
1985 4
1986 1
1987 4
1988 5
1989 3
1990 7
1991 7
1992 2
1993 5
1994 6
1995 5
1996 2
1997 2
1998 0
1999 2
2000 6
2001 3
2002 0
2003 4
2004 2
2005 0
2006 2
2007 0
2008 2
2009 2
2010 2
2011 0
2012 2
2013 2
2014 1
2015 0
2016 1
2017 0
2018 2
2019 1
2020 0
2021 2
Total 168
Download as CSV

Robert C. Gardner publications per year - data summary

  • Robert C. Gardner, a Psychology scholar from University of Western Ontario, has 168 publications recorded across 64 years, from 1958 to 2021.
  • The oldest publication on record dates to 1958 and the most recent to 2021.
  • The most productive year is 1975, with 8 publications.
  • The least productive years with any output are 1963, 1964, 1967, 1986 and others, with 1 publication each.
  • 12 of the 64 years in the span carry no publications at all (1961, 1962, 1966, 1971 and others).
  • The rate of publication averages 2.6 papers per year over the whole span, or 3.2 per year counting only the 52 years with at least one publication.
  • The last 5 years on the chart (2017-2021) hold 5 publications, 3% of the career total.
  • Split into equal eras - 1958-1979: 65 publications (3.0 per year); 1980-2001: 78 publications (3.5 per year); 2002-2021: 25 publications (1.3 per year).
  • Comparing the opening and closing eras, the overall trend of publication is declining.

Robert C. Gardner publication distribution in Psychology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Psychology in 2026. The highlighted bar marks where Robert C. Gardner sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 69 bars. Horizontal axis: publications, 31–40 to 705+. Vertical axis: number of scientists, 0 to 736. Most scientists, 736, have 101–110 publications. The last bar groups every scientist with 705 publications or more. The highlighted bar, 121–130 publications, is where this scientist sits. 31–40 publications: 6 scientists 41–50 publications: 52 scientists 51–60 publications: 138 scientists 61–70 publications: 299 scientists 71–80 publications: 461 scientists 81–90 publications: 605 scientists 91–100 publications: 713 scientists 101–110 publications: 736 scientists 111–120 publications: 686 scientists 121–130 publications: 670 scientists 131–140 publications: 644 scientists 141–150 publications: 597 scientists 151–160 publications: 576 scientists 161–170 publications: 477 scientists 171–180 publications: 450 scientists 181–190 publications: 397 scientists 191–200 publications: 343 scientists 201–210 publications: 328 scientists 211–220 publications: 313 scientists 221–230 publications: 283 scientists 231–240 publications: 226 scientists 241–250 publications: 196 scientists 251–260 publications: 201 scientists 261–270 publications: 171 scientists 271–280 publications: 151 scientists 281–290 publications: 139 scientists 291–300 publications: 113 scientists 301–310 publications: 102 scientists 311–320 publications: 100 scientists 321–330 publications: 76 scientists 331–340 publications: 92 scientists 341–350 publications: 85 scientists 351–360 publications: 69 scientists 361–370 publications: 71 scientists 371–380 publications: 63 scientists 381–390 publications: 58 scientists 391–400 publications: 57 scientists 401–410 publications: 43 scientists 411–420 publications: 33 scientists 421–430 publications: 50 scientists 431–440 publications: 41 scientists 441–450 publications: 32 scientists 451–460 publications: 27 scientists 461–470 publications: 28 scientists 471–480 publications: 25 scientists 481–490 publications: 28 scientists 491–500 publications: 20 scientists 501–510 publications: 23 scientists 511–520 publications: 26 scientists 521–530 publications: 17 scientists 531–540 publications: 21 scientists 541–550 publications: 14 scientists 551–560 publications: 16 scientists 561–570 publications: 10 scientists 571–580 publications: 22 scientists 581–590 publications: 9 scientists 591–600 publications: 14 scientists 601–610 publications: 9 scientists 611–620 publications: 11 scientists 621–630 publications: 4 scientists 631–640 publications: 7 scientists 641–650 publications: 5 scientists 651–660 publications: 10 scientists 661–670 publications: 8 scientists 671–680 publications: 8 scientists 681–690 publications: 4 scientists 691–700 publications: 3 scientists 701–704 publications: 4 scientists 705+ publications: 100 scientists
31–40 publications 705+

This scientist: 126 publications — 36th percentile

36% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 705 publications or more.

View publications distribution as a table
Number of Psychology scientists by publication count, Research.com 2026 ranking edition. Based on 11,416 ranked scientists.
Publications Scientists This scientist
31–40 6
41–50 52
51–60 138
61–70 299
71–80 461
81–90 605
91–100 713
101–110 736
111–120 686
121–130 670 126
131–140 644
141–150 597
151–160 576
161–170 477
171–180 450
181–190 397
191–200 343
201–210 328
211–220 313
221–230 283
231–240 226
241–250 196
251–260 201
261–270 171
271–280 151
281–290 139
291–300 113
301–310 102
311–320 100
321–330 76
331–340 92
341–350 85
351–360 69
361–370 71
371–380 63
381–390 58
391–400 57
401–410 43
411–420 33
421–430 50
431–440 41
441–450 32
451–460 27
461–470 28
471–480 25
481–490 28
491–500 20
501–510 23
511–520 26
521–530 17
531–540 21
541–550 14
551–560 16
561–570 10
571–580 22
581–590 9
591–600 14
601–610 9
611–620 11
621–630 4
631–640 7
641–650 5
651–660 10
661–670 8
671–680 8
681–690 4
691–700 3
701–704 4
705+ 100
Download as CSV

Robert C. Gardner publication distribution in Psychology in 2026 - data summary

  • The chart plots the publication count of all 11,416 Psychology scientists ranked by Research.com in 2026, grouped into 69 ranges running from 31–40 to 705+ publications.
  • Robert C. Gardner, a Psychology scholar from University of Western Ontario, records 126 publications - the 36th percentile of the discipline.
  • 36% of ranked Psychology scientists score the same or lower than Robert C. Gardner, and about 64% score higher.
  • The median of the discipline falls in the 151–160 publications range, and Robert C. Gardner ranks below the median.
  • The most crowded range is 101–110 publications, holding 736 scientists (6% of the field).
  • 72% of the field sits in the lowest quarter of the value range (up to 201–210 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 705 publications or more, 100 scientists in all (<1% of the field).

Robert C. Gardner D-index placement in Psychology in 2026

The chart shows the D-index (discipline H-index) distribution of Psychology scientists ranked by Research.com in 2026. The highlighted bar marks where Robert C. Gardner sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 58 bars. Horizontal axis: D-Index, 30–31 to 144+. Vertical axis: number of scientists, 0 to 702. Most scientists, 702, have 32–33 D-Index. The last bar groups every scientist with 144 D-Index or more. The highlighted bar, 68–69 D-Index, is where this scientist sits. 30–31 D-Index: 398 scientists 32–33 D-Index: 702 scientists 34–35 D-Index: 671 scientists 36–37 D-Index: 659 scientists 38–39 D-Index: 641 scientists 40–41 D-Index: 671 scientists 42–43 D-Index: 617 scientists 44–45 D-Index: 558 scientists 46–47 D-Index: 495 scientists 48–49 D-Index: 487 scientists 50–51 D-Index: 445 scientists 52–53 D-Index: 390 scientists 54–55 D-Index: 408 scientists 56–57 D-Index: 345 scientists 58–59 D-Index: 325 scientists 60–61 D-Index: 321 scientists 62–63 D-Index: 248 scientists 64–65 D-Index: 290 scientists 66–67 D-Index: 218 scientists 68–69 D-Index: 219 scientists 70–71 D-Index: 215 scientists 72–73 D-Index: 183 scientists 74–75 D-Index: 169 scientists 76–77 D-Index: 132 scientists 78–79 D-Index: 137 scientists 80–81 D-Index: 120 scientists 82–83 D-Index: 112 scientists 84–85 D-Index: 86 scientists 86–87 D-Index: 101 scientists 88–89 D-Index: 83 scientists 90–91 D-Index: 77 scientists 92–93 D-Index: 70 scientists 94–95 D-Index: 78 scientists 96–97 D-Index: 58 scientists 98–99 D-Index: 53 scientists 100–101 D-Index: 57 scientists 102–103 D-Index: 48 scientists 104–105 D-Index: 53 scientists 106–107 D-Index: 46 scientists 108–109 D-Index: 24 scientists 110–111 D-Index: 35 scientists 112–113 D-Index: 27 scientists 114–115 D-Index: 32 scientists 116–117 D-Index: 31 scientists 118–119 D-Index: 22 scientists 120–121 D-Index: 16 scientists 122–123 D-Index: 24 scientists 124–125 D-Index: 18 scientists 126–127 D-Index: 11 scientists 128–129 D-Index: 19 scientists 130–131 D-Index: 10 scientists 132–133 D-Index: 16 scientists 134–135 D-Index: 10 scientists 136–137 D-Index: 12 scientists 138–139 D-Index: 8 scientists 140–141 D-Index: 5 scientists 142–143 D-Index: 12 scientists 144+ D-Index: 98 scientists
30–31 D-Index 144+

This scientist: 69 D-Index — 80th percentile

80% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 144 D-Index or more.

View D-Index distribution as a table
Number of Psychology scientists by D-index, Research.com 2026 ranking edition. Based on 11,416 ranked scientists.
D-Index Scientists This scientist
30–31 398
32–33 702
34–35 671
36–37 659
38–39 641
40–41 671
42–43 617
44–45 558
46–47 495
48–49 487
50–51 445
52–53 390
54–55 408
56–57 345
58–59 325
60–61 321
62–63 248
64–65 290
66–67 218
68–69 219 69
70–71 215
72–73 183
74–75 169
76–77 132
78–79 137
80–81 120
82–83 112
84–85 86
86–87 101
88–89 83
90–91 77
92–93 70
94–95 78
96–97 58
98–99 53
100–101 57
102–103 48
104–105 53
106–107 46
108–109 24
110–111 35
112–113 27
114–115 32
116–117 31
118–119 22
120–121 16
122–123 24
124–125 18
126–127 11
128–129 19
130–131 10
132–133 16
134–135 10
136–137 12
138–139 8
140–141 5
142–143 12
144+ 98
Download as CSV

Robert C. Gardner D-index placement in Psychology in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 11,416 Psychology scientists ranked by Research.com in 2026, grouped into 58 ranges running from 30–31 to 144+ D-Index.
  • Robert C. Gardner, a Psychology scholar from University of Western Ontario, records 69 D-Index - the 80th percentile of the discipline.
  • 80% of ranked Psychology scientists score the same or lower than Robert C. Gardner, and about 20% score higher.
  • The median of the discipline falls in the 48–49 D-Index range, and Robert C. Gardner ranks above the median.
  • The most crowded range is 32–33 D-Index, holding 702 scientists (6% of the field).
  • 68% of the field sits in the lowest quarter of the value range (up to 58–59 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 144 D-Index or more, 98 scientists in all (<1% of the field).

Overview

Robert C. Gardner is affiliated with the University of Western Ontario in Canada. Their research primarily spans the field of Medicine, with notable contributions in subfields such as Infectious Diseases, Cardiology and Cardiovascular Medicine, and Hepatology.

The scientist has contributed to the understanding of various medical topics, including:

  • Viral gastroenteritis research and epidemiology
  • Viral Infections and Immunology Research
  • Hepatitis Viruses Studies and Epidemiology

Gardner's recent publications include a paper titled "Established and new rotavirus vaccines: a comprehensive review for healthcare professionals", published in 2021 in the journal Human Vaccines & Immunotherapeutics. This paper has been cited 19 times, reflecting engagement with the immunization research community.

Their work has appeared predominantly in the publication venue Human Vaccines & Immunotherapeutics, contributing at least one paper to this journal.

Frequent collaborators in their research include:

  • Volker Vetter
  • S. Debrus
  • Bernd Benninghoff
  • Priya Pereira

Best Publications

  • Social psychology and second language learning : the role of attitudes and motivation

    Robert C. Gardner

  • Attitudes and Motivation in Second-Language Learning

    Robert C. Gardner;Wallace E. Lambert

  • The Subtle Effects of Language Anxiety on Cognitive Processing in the Second Language

    Peter D. MacIntyre;R. C. Gardner

  • Attitudes, Motivation, and Second Language Learning: A Meta‐Analysis of Studies Conducted by Gardner and Associates

    Anne-Marie Masgoret;Robert C. Gardner

  • Motivational variables in second-language acquisition

    Robert C. Gardner;Wallace E. Lambert

  • Anxiety and Second‐Language Learning: Toward a Theoretical Clarification*

    P. D. MacIntyre;R. C. Gardner

  • A student's contributions to second-language learning. Part II: Affective variables

    R. C. Gardner;P. D. MacIntyre

  • Evaluational reactions to spoken languages.

    W E Lambert;R C Hodgson;R C Gardner;S Fillenbaum

  • A student's contributions to second language learning. Part I: Cognitive variables

    R. C. Gardner;P. D. MacIntyre

  • Methods and Results in the Study of Anxiety and Language Learning: A Review of the Literature*

    Peter D. MacIntyre;Robert C. Gardner

  • Expanding the Motivation Construct in Language Learning

    Paul F. Tremblay;Robert C. Gardner

  • On the Measurement of Affective Variables in Second Language Learning

    Robert C. Gardner;Peter D. MacIntyre

  • Towards a Full Model of Second Language Learning: An Empirical Investigation

    R. C. Gardner;Paul F. Tremblay;Anne-Marie Masgoret

  • Language Anxiety: Its Relationship to Other Anxieties and to Processing in Native and Second Languages*

    Peter D. MacIntyre;R. C. Gardner

  • An Instrumental Motivation In Language Study: Who Says It Isn't Effective?

    R. C. Gardner;P. D. MacIntyre

  • Motivation and Second-Language Acquisition.

    Robert C. Gardner

  • Investigating Language Class Anxiety Using the Focused Essay Technique

    Peter D. Macintyre;R. C. Gardner

  • On Motivation, Research Agendas, and Theoretical Frameworks†

    R. C. Gardner;P. F. Tremblay

  • Teacher Motivation Strategies, Student Perceptions, Student Motivation, and English Achievement

    Mercè Bernaus;Robert C. Gardner

  • Integrative motivation: Changes during a year-long intermediate-level language course

    R. C. Gardner;A.-M. Masgoret;J. Tennant;L. Mihic

Frequent Co-Authors

Richard N. Lalonde
Richard N. Lalonde York University
Peter D. MacIntyre
Peter D. MacIntyre Cape Breton University
Paul F. Tremblay
Paul F. Tremblay University of Western Ontario
Richard Clément
Richard Clément University of Ottawa
Wallace E. Lambert
Wallace E. Lambert McGill University
Donald M. Taylor
Donald M. Taylor McGill University
Richard W. J. Neufeld
Richard W. J. Neufeld University of Western Ontario
Samantha Wells
Samantha Wells Centre for Addiction and Mental Health
Allan Paivio
Allan Paivio University of Western Ontario
Jyotsna Vaid
Jyotsna Vaid Texas A&M University

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

A degree in psychology opens doors to a wide range of careers, with social work being one of the most rewarding options. Many states have specific educational pathways and requirements for entering this field. Aspiring social workers should be aware that the degree needed to be a social worker in Ohio typically starts with a bachelor’s in social work or a closely related discipline such as psychology. However, advanced roles might require a master’s degree and additional licensing.

Each state sets its own standards. For example, the Oklahoma minimum degree requirement for social workers is a bachelor’s in social work (BSW), while practicing clinicians need a master’s. Similarly, the Oregon minimum degree requirement for social workers follows a comparable pattern, emphasizing accredited degrees and practical training.

In the Northeast, the Pennsylvania education requirements for social workers also highlight the need for an accredited degree, fieldwork, and, often, state licensing exams. Because requirements vary, researching your state’s guidelines is key if you’re planning to pursue a career in social work after your psychology studies.

Best Scientists Citing Robert C. Gardner

Trending Scientists

Recently Published Articles