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2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Psychology 65 2767 2533 144 138 174 27621
Rising Stars 65 103 103 1 1 190 21585

Eiko I. Fried publications per year

The chart shows the history of publications by Eiko I. Fried between 2014 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Eiko I. Fried published across 12 years, from 2014 to 2025, averaging 24.9 papers a year. Output peaked at 40 publications in 2024. 79 of the 299 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 2014 to 2025. Vertical axis: number of publications, 0 to 40. Peak 40 publications in 2024. 2014: 4 publications 2015: 10 publications 2016: 12 publications 2017: 17 publications 2018: 27 publications 2019: 32 publications 2020: 39 publications 2021: 28 publications 2022: 24 publications 2023: 27 publications 2024: 40 publications 2025: 39 publications
2014 2025

299 publications in total across all disciplines

View publications per year as a table
Eiko I. Fried: publications per year, 2014 to 2025
Year Publications
2014 4
2015 10
2016 12
2017 17
2018 27
2019 32
2020 39
2021 28
2022 24
2023 27
2024 40
2025 39
Total 299
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Eiko I. Fried publications per year - data summary

  • Eiko I. Fried, a Psychology scholar from Leiden University, has 299 publications recorded across 12 years, from 2014 to 2025.
  • The oldest publication on record dates to 2014 and the most recent to 2025.
  • The most productive year is 2024, with 40 publications.
  • The least productive year with any output is 2014, with 4 publications.
  • The rate of publication averages 24.9 papers per year over the whole span, or 24.9 per year counting only the 12 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 158 publications, 53% of the career total.
  • Split into equal eras - 2014-2017: 43 publications (10.8 per year); 2018-2021: 126 publications (31.5 per year); 2022-2025: 130 publications (32.5 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Eiko I. Fried 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 Eiko I. Fried 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, 171–180 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: 174 publications — 60th percentile

60% 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
131–140 644
141–150 597
151–160 576
161–170 477
171–180 450 174
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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Eiko I. Fried 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.
  • Eiko I. Fried, a Psychology scholar from Leiden University, records 174 publications - the 60th percentile of the discipline.
  • 60% of ranked Psychology scientists score the same or lower than Eiko I. Fried, and about 40% score higher.
  • The median of the discipline falls in the 151–160 publications range, and Eiko I. Fried ranks above 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).

Eiko I. Fried 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 Eiko I. Fried 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, 64–65 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: 65 D-Index — 76th percentile

76% 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 65
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
Download as CSV

Eiko I. Fried 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.
  • Eiko I. Fried, a Psychology scholar from Leiden University, records 65 D-Index - the 76th percentile of the discipline.
  • 76% of ranked Psychology scientists score the same or lower than Eiko I. Fried, and about 24% score higher.
  • The median of the discipline falls in the 48–49 D-Index range, and Eiko I. Fried 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).

Research.com Recognitions

  • 2026 - Research.com Rising Stars Award
  • 2025 - Research.com Rising Stars Award

Overview

Eiko I. Fried is affiliated with Leiden University in the Netherlands. Their research contributions span psychology and neuroscience, with a focus on experimental and cognitive psychology, cognitive neuroscience, clinical psychology, biological psychiatry, and psychiatry and mental health. Their work addresses a variety of topics related to mental health research, including functional brain connectivity studies, tryptophan and brain disorders, schizophrenia research and treatment, complex network analysis techniques, anxiety, depression, psychometrics, treatment, cognitive processes, and child and adolescent psychosocial and emotional development.

Fried has published extensively, with recent papers including:

  • Network analysis of multivariate data in psychological science, 2021, Nature Reviews Methods Primers
  • Measurement Schmeasurement: Questionable Measurement Practices and How to Avoid Them, 2020, Advances in Methods and Practices in Psychological Science
  • Reporting standards for psychological network analyses in cross-sectional data, 2022, Psychological Methods
  • Lack of Theory Building and Testing Impedes Progress in The Factor and Network Literature, 2020, Psychological Inquiry
  • Revisiting the theoretical and methodological foundations of depression measurement, 2022, Nature Reviews Psychology

The most frequent co-authors collaborating with Fried are:

  • Sacha Epskamp
  • Donald J. Robinaugh
  • Denny Borsboom
  • Adela-Maria Isvoranu
  • Lourens Waldorp

Frequent publication venues for Fried include:

  • Psychological Medicine
  • Journal of Psychopathology and Clinical Science
  • The Lancet Psychiatry
  • Arabixiv (OSF Preprints)
  • Behaviour Research and Therapy

The body of Fried's work is characterized by contributions to mental health research topics and methodological advances in psychological science, particularly through network analysis approaches applied to psychological data.

Best Publications

  • Estimating Psychological Networks and their Accuracy : A tutorial paper

    Sacha Epskamp;Denny Borsboom;Eiko I. Fried

  • A tutorial on regularized partial correlation networks.

    Sacha Epskamp;Eiko I. Fried

  • Depression is not a consistent syndrome: An investigation of unique symptom patterns in the STAR*D study

    Eiko I. Fried;Randolph M. Nesse

  • Mental disorders as networks of problems: a review of recent insights

    Eiko I Fried;Claudia D van Borkulo;Angélique O J Cramer;Lynn Boschloo

  • Network analysis of multivariate data in psychological science

    Denny Borsboom;Marie K. Deserno;Mijke Rhemtulla;Sacha Epskamp

  • Depression sum-scores don’t add up: why analyzing specific depression symptoms is essential

    Eiko I Fried;Randolph M Nesse

  • Moving Forward: Challenges and Directions for Psychopathological Network Theory and Methodology:

    Eiko I Fried;Angélique O J Cramer

  • Network analysis of depression and anxiety symptom relationships in a psychiatric sample.

    Courtney Beard;Alex J. Millner;Marie J. C. Forgeard;Eiko I. Fried

  • What are 'good' depression symptoms? Comparing the centrality of DSM and non-DSM symptoms of depression in a network analysis

    Eiko I. Fried;Sacha Epskamp;Randolph M. Nesse;Francis Tuerlinckx

  • The 52 symptoms of major depression: Lack of content overlap among seven common depression scales.

    Eiko I. Fried

  • A Hierarchical Taxonomy of Psychopathology Can Transform Mental Health Research

    Christopher C. Conway;Miriam K. Forbes;Kelsie T. Forbush;Eiko I. Fried

  • The impact of individual depressive symptoms on impairment of psychosocial functioning.

    Eiko I. Fried;Randolph M. Nesse

  • Problematic assumptions have slowed down depression research: why symptoms, not syndromes are the way forward

    Eiko I. Fried

  • Replicability and Generalizability of Posttraumatic Stress Disorder (PTSD) Networks: A Cross-Cultural Multisite Study of PTSD Symptoms in Four Trauma Patient Samples

    Eiko I Fried;Marloes B Eidhof;Sabina Palic;Giulio Costantini

  • How predictable are symptoms in psychopathological networks? A reanalysis of 18 published datasets

    Jonas Haslbeck;Eiko I. Fried

  • From loss to loneliness: The relationship between bereavement and depressive symptoms.

    Eiko I. Fried;Claudi Bockting;Retha Arjadi;Denny Borsboom

  • A network analysis of DSM-5 posttraumatic stress disorder symptoms and correlates in U.S. military veterans

    Cherie Armour;Eiko I. Fried;Marie K. Deserno;Jack Tsai

  • Social media and depression symptoms: A network perspective.

    George Aalbers;Richard J. McNally;Alexandre Heeren;Sanne de Wit

  • Depression is more than the sum score of its parts: individual DSM symptoms have different risk factors

    Eiko I. Fried;Randolph M. Nesse;Kara Zivin;Constance Guille

Frequent Co-Authors

Sacha Epskamp
Sacha Epskamp National University of Singapore
Denny Borsboom
Denny Borsboom University of Amsterdam
Donald J. Robinaugh
Donald J. Robinaugh Massachusetts General Hospital
Randolph M. Nesse
Randolph M. Nesse Arizona State University
Jan Stochl
Jan Stochl University of Cambridge
Robert A. Schoevers
Robert A. Schoevers University Medical Center Groningen
Rogier A. Kievit
Rogier A. Kievit Donders Institute
Angélique O. J. Cramer
Angélique O. J. Cramer University of Amsterdam
Ian M. Goodyer
Ian M. Goodyer University of Cambridge

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