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Willem Koomen

D-Index & Metrics

Discipline name D-Index World Ranking National Ranking Publications Citations
Psychology 30 11349 491 93 4349

Willem Koomen publications per year

The chart shows the history of publications by Willem Koomen between 1974 and 2015, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Willem Koomen published across 42 years, from 1974 to 2015, averaging 2.6 papers a year. Output peaked at 19 publications in 2007. 10 of the 110 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1974 to 2015. Vertical axis: number of publications, 0 to 19. Peak 19 publications in 2007. 1974: 1 publication 1975: 1 publication 1976: 0 publications 1977: 1 publication 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 1 publication 1983: 0 publications 1984: 2 publications 1985: 2 publications 1986: 0 publications 1987: 0 publications 1988: 2 publications 1989: 0 publications 1990: 0 publications 1991: 2 publications 1992: 3 publications 1993: 1 publication 1994: 2 publications 1995: 3 publications 1996: 9 publications 1997: 6 publications 1998: 8 publications 1999: 4 publications 2000: 7 publications 2001: 7 publications 2002: 1 publication 2003: 1 publication 2004: 1 publication 2005: 4 publications 2006: 2 publications 2007: 19 publications 2008: 4 publications 2009: 2 publications 2010: 0 publications 2011: 1 publication 2012: 1 publication 2013: 2 publications 2014: 0 publications 2015: 10 publications
1974 2015

110 publications in total across all disciplines

View publications per year as a table
Willem Koomen: publications per year, 1974 to 2015
Year Publications
1974 1
1975 1
1976 0
1977 1
1978 0
1979 0
1980 0
1981 0
1982 1
1983 0
1984 2
1985 2
1986 0
1987 0
1988 2
1989 0
1990 0
1991 2
1992 3
1993 1
1994 2
1995 3
1996 9
1997 6
1998 8
1999 4
2000 7
2001 7
2002 1
2003 1
2004 1
2005 4
2006 2
2007 19
2008 4
2009 2
2010 0
2011 1
2012 1
2013 2
2014 0
2015 10
Total 110
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Willem Koomen 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 Willem Koomen 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, 91–100 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: 93 publications — 15th percentile

15% 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 93
101–110 736
111–120 686
121–130 670
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
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Willem Koomen 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 Willem Koomen 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, 30–31 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: 30 D-Index — 1st percentile

1% 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 30
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
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
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Overview

Willem Koomen is affiliated with the University of Amsterdam in the Netherlands. Their academic profile indicates a focus primarily associated with this institution.

There are no recorded recent papers, co-authors, publication venues, book publications, specific fields or subfields of study, main topics, or awards connected to this scientist in the provided data.

Given the absence of detailed publication or research topic data, the profile remains centered on the known institutional affiliation without additional elaboration on scientific contributions or research areas.

Best Publications

  • Seeing one thing and doing another: Contrast effects in automatic behavior.

    A Dijksterhuis;Russell Spears;Tom Postmes;DA Stapel

  • I, we, and the effects of others on me: How self-construal level moderates social comparison effects.

    Diederik A. Stapel;Willem Koomen

  • Competition, cooperation, and the effects of others on me.

    Diederik A. Stapel;Willem Koomen

  • Categories of Category Accessibility: The Impact of Trait Concept versus Exemplar Priming on Person Judgments ☆

    Diederik A. Stapel;Willem Koomen;Joop van der Pligt

  • Distinctness of others, mutability of selves: Their impact on self-evaluations

    Diederik A. Stapel;Willem Koomen

  • WHEN BAD ISNT ALL BAD : STRATEGIC USE OF SAMPLE INFORMATION IN GENERALIZATION AND STEREOTYPING

    Bertjan Doosje;Russell Spears;Willem Koomen

  • The Psychology of Radicalization and Terrorism

    Willem Koomen;Joop Van Der Pligt

  • Consequences of Stereotype Suppression and Internal Suppression Motivation: A Self-Regulation Approach

    Ernestine H. Gordijn;Inge Hindriks;Willem Koomen;Ap Dijksterhuis

  • The effects of diffuse and distinct affect

    Diederik A. Stapel;Willem Koomen;Kirsten I. Ruys

  • Extending Weiner's Attribution-Emotion Model of Stigmatization of Ill Persons

    Anton J. Dijker;Willem Koomen

  • The effect of comparative context on central tendency and variability judgements and the evaluation of group characteristics

    Bertjan Doosje;S. Alexander Haslam;Russell Spears;Penelope J. Oakes

  • Assimilation or Contrast?: Comparison Relevance, Distinctness, and the Impact of Accessible Information on Consumer Judgments

    Diederik A. Stapel;Willem Koomen;Aart S. Velthuijsen

  • The impact of accuracy motivation on interpretation, comparison, and correction processes: accuracy x knowledge accessibility effects.

    Diederik A. Stapel;Willem Koomen;Marcel Zeelenberg

  • The Referents of Trait Inferences: The Impact of Trait Concepts Versus Actor-Trait Links on Subsequent Judgments

    Diederik A. Stapel;Willem Koomen;Joop van der Pligt

  • The impact of interpretation versus comparison mindsets on knowledge accessibility effects.

    Diederik A. Stapel;Willem Koomen

  • Perceived Group Variability in Intergroup Relations: The Distinctive Role of Social Identity

    E.J. Doosje;R. Spears;N. Ellemers;W. Koomen

  • Stigmatization, tolerance and repair : an integrative psychological analysis of responses to deviance

    Antonius Johannes Maria Dijker;Willem Koomen

  • Stereotyping and attitudinal effects under time pressure

    Anton J. Dijker;Willem Koomen

  • Level of Prejudice in Relation to Knowledge of Cultural Stereotypes

    Ernestine H. Gordijn;Willem Koomen;Diederik A. Stapel

  • Emotional Reactions to People With AIDS

    Anton J. Dijker;Gerjo Kok;Willem Koomen

Frequent Co-Authors

Diederik A. Stapel
Diederik A. Stapel Tilburg University
Joop van der Pligt
Joop van der Pligt University of Amsterdam
Russell Spears
Russell Spears University of Groningen
Bertjan Doosje
Bertjan Doosje University of Amsterdam
Ap Dijksterhuis
Ap Dijksterhuis Radboud University
Arjan E. R. Bos
Arjan E. R. Bos The Open University
Penelope J. Oakes
Penelope J. Oakes Australian National University
Naomi Ellemers
Naomi Ellemers Utrecht University
Ad van Knippenberg
Ad van Knippenberg Radboud University
Tom Postmes
Tom Postmes University of Groningen

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Related Online Degrees & Career Pathways

If you’re considering a career in psychology, there are a range of related online degrees and career options available. Many students choose to pursue specialized roles, such as becoming a Marriage and Family Therapist (MFT). This pathway is popular in various parts of the U.S., with specific state and city requirements that you’ll need to meet.

For example, to become an MFT in different areas, you should review specific requirements such as coursework, supervised clinical hours, and state licensure. You can explore Fort Worth mft education requirements or see what’s involved by checking the mft requirements in Fremont. Requirements may differ, so make sure to explore guidelines for other cities as well, including mft requirements in Fresno or mft requirements in Garland.

Online degree programs are widely available and can help you meet these criteria, often allowing you to balance work and study. Be sure to research accredited programs that align with your intended career path and location-specific requirements.

Best Scientists Citing Willem Koomen

Diederik A. Stapel

Diederik A. Stapel

Tilburg University

Publications: 62

Russell Spears

Russell Spears

University of Groningen

Publications: 45

S. Alexander Haslam

S. Alexander Haslam

University of Queensland

Publications: 29

Thomas Mussweiler

Thomas Mussweiler

London Business School

Publications: 20

Naomi Ellemers

Naomi Ellemers

Utrecht University

Publications: 20

Arjan E. R. Bos

Arjan E. R. Bos

The Open University

Publications: 20

Richard E. Petty

Richard E. Petty

The Ohio State University

Publications: 17

Jolanda Jetten

Jolanda Jetten

University of Queensland

Publications: 16

S. Christian Wheeler

S. Christian Wheeler

Stanford University

Publications: 14

Ap Dijksterhuis

Ap Dijksterhuis

Radboud University

Publications: 14

Kenneth G. DeMarree

Kenneth G. DeMarree

University at Buffalo, State University of New York

Publications: 14

Tom Postmes

Tom Postmes

University of Groningen

Publications: 14

Bertjan Doosje

Bertjan Doosje

University of Amsterdam

Publications: 13

Vincent Yzerbyt

Vincent Yzerbyt

Université Catholique de Louvain

Publications: 12

John B. Pryor

John B. Pryor

Illinois State University

Publications: 12

Abraham P. Buunk

Abraham P. Buunk

University of Groningen

Publications: 11

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