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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Psychology 39 8450 7891 9 9 166 8661

Nikolaos Smyrnis publications per year

The chart shows the history of publications by Nikolaos Smyrnis between 1992 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Nikolaos Smyrnis published across 34 years, from 1992 to 2025, averaging 6.3 papers a year. Output peaked at 22 publications in 2021. 29 of the 213 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1992 to 2025. Vertical axis: number of publications, 0 to 22. Peak 22 publications in 2021. 1992: 2 publications 1993: 1 publication 1994: 0 publications 1995: 0 publications 1996: 1 publication 1997: 1 publication 1998: 0 publications 1999: 0 publications 2000: 2 publications 2001: 3 publications 2002: 6 publications 2003: 4 publications 2004: 7 publications 2005: 3 publications 2006: 3 publications 2007: 7 publications 2008: 7 publications 2009: 5 publications 2010: 2 publications 2011: 5 publications 2012: 6 publications 2013: 4 publications 2014: 9 publications 2015: 5 publications 2016: 9 publications 2017: 7 publications 2018: 11 publications 2019: 12 publications 2020: 12 publications 2021: 22 publications 2022: 16 publications 2023: 12 publications 2024: 21 publications 2025: 8 publications
1992 2025

213 publications in total across all disciplines

View publications per year as a table
Nikolaos Smyrnis: publications per year, 1992 to 2025
Year Publications
1992 2
1993 1
1994 0
1995 0
1996 1
1997 1
1998 0
1999 0
2000 2
2001 3
2002 6
2003 4
2004 7
2005 3
2006 3
2007 7
2008 7
2009 5
2010 2
2011 5
2012 6
2013 4
2014 9
2015 5
2016 9
2017 7
2018 11
2019 12
2020 12
2021 22
2022 16
2023 12
2024 21
2025 8
Total 213
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Nikolaos Smyrnis publications per year - data summary

  • Nikolaos Smyrnis, a Psychology scholar from National and Kapodistrian University of Athens, has 213 publications recorded across 34 years, from 1992 to 2025.
  • The oldest publication on record dates to 1992 and the most recent to 2025.
  • The most productive year is 2021, with 22 publications.
  • The least productive years with any output are 1993, 1996 and 1997, with 1 publication each.
  • 4 of the 34 years in the span carry no publications at all (1994, 1995, 1998 and 1999).
  • The rate of publication averages 6.3 papers per year over the whole span, or 7.1 per year counting only the 30 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 79 publications, 37% of the career total.
  • Split into equal eras - 1992-2003: 20 publications (1.7 per year); 2004-2015: 63 publications (5.3 per year); 2016-2025: 130 publications (13.0 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Nikolaos Smyrnis 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 Nikolaos Smyrnis 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, 161–170 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: 166 publications — 57th percentile

57% 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
161–170 477 166
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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Nikolaos Smyrnis 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.
  • Nikolaos Smyrnis, a Psychology scholar from National and Kapodistrian University of Athens, records 166 publications - the 57th percentile of the discipline.
  • 57% of ranked Psychology scientists score the same or lower than Nikolaos Smyrnis, and about 43% score higher.
  • The median of the discipline falls in the 151–160 publications range, and Nikolaos Smyrnis 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).

Nikolaos Smyrnis 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 Nikolaos Smyrnis 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, 38–39 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: 39 D-Index — 27th percentile

27% 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 39
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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Nikolaos Smyrnis 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.
  • Nikolaos Smyrnis, a Psychology scholar from National and Kapodistrian University of Athens, records 39 D-Index - the 27th percentile of the discipline.
  • 27% of ranked Psychology scientists score the same or lower than Nikolaos Smyrnis, and about 73% score higher.
  • The median of the discipline falls in the 48–49 D-Index range, and Nikolaos Smyrnis ranks below 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

Nikolaos Smyrnis is affiliated with the National and Kapodistrian University of Athens in Greece. Their research spans multiple fields of study, primarily focusing on Medicine, Neuroscience, and Psychology. Key subfields contributing to their academic output include Cognitive Neuroscience, Psychiatry and Mental Health, Clinical Psychology, Experimental and Cognitive Psychology, and Neurology.

Their work covers several main research topics, with significant attention given to Functional Brain Connectivity Studies, Schizophrenia research and treatment, COVID-19 and Mental Health, Mental Health Research Topics in general, Attention Deficit Hyperactivity Disorder, Long-Term Effects of COVID-19, and Neural dynamics and brain function.

Nikolaos Smyrnis has published in various academic venues, frequently contributing to:

  • Frontiers in Psychiatry
  • Experimental and Therapeutic Medicine
  • European Psychiatry
  • Scientific Reports
  • Psychiatry Research

Recent published papers include:

  • Medical education challenges and innovations during COVID-19 pandemic, 2021, Postgraduate Medical Journal
  • Neurological manifestations of long-COVID syndrome: a narrative review, 2022, Therapeutic Advances in Chronic Disease
  • COVID-19 and its consequences on mental health (Review), 2021, Experimental and Therapeutic Medicine
  • Long COVID and neuropsychiatric manifestations (Review), 2022, Experimental and Therapeutic Medicine
  • Minimal reporting guideline for research involving eye tracking (2023 edition), 2023, Behavior Research Methods

The scientist collaborates regularly with various coauthors, including Christoph Klein, Panagiotis Ferentinos, Athanasios Douzenis, Monica Biscaldi, and Nikolaos Kelekis, reflecting an interdisciplinary and collaborative approach in their research.

Best Publications

  • Genome-wide association meta-analysis in 269,867 individuals identifies new genetic and functional links to intelligence

    Jeanne E Savage;Philip R Jansen;Philip R Jansen;Sven Stringer;Kyoko Watanabe

  • Study of 300,486 individuals identifies 148 independent genetic loci influencing general cognitive function

    Gail Davies;Max Lam;Sarah E. Harris;Joey W. Trampush

  • The motor cortex and the coding of force.

    Apostolos P. Georgopoulos;James Ashe;Nikolaos Smyrnis;Masato Taira

  • GWAS meta-analysis reveals novel loci and genetic correlates for general cognitive function: a report from the COGENT consortium

    Joey W Trampush;M L Z Yang;J Yu;E. Knowles

  • Medical education challenges and innovations during COVID-19 pandemic.

    Michail Papapanou;Eleni Routsi;Konstantinos Tsamakis;Lampros Fotis

  • Factorial Composition of Self-Rated Schizotypal Traits Among Young Males Undergoing Military Training

    Nicholas C. Stefanis;Nikolaos Smyrnis;Dimitrios Avramopoulos;Ioannis Evdokimidis

  • An internationally standardised antisaccade protocol

    Chrystalina Antoniades;Ulrich Ettinger;Bertrand Gaymard;Iain Gilchrist

  • Motor cortical activity in a memorized delay task.

    Nikolaos Smyrnis;Nikolaos Smyrnis;Masato Taira;Masato Taira;James Ashe;James Ashe;Apostolos P. Georgopoulos;Apostolos P. Georgopoulos

  • Impact of schizophrenia candidate genes on schizotypy and cognitive endophenotypes at the population level

    N.C. Stefanis;T.A. Trikalinos;D. Avramopoulos;N. Smyrnis

  • COVID-19 and its consequences on mental health (Review)

    Konstantinos Tsamakis;Dimitrios Tsiptsios;Andreas Ouranidis;Christoph Mueller

  • Variation in catechol-o-methyltransferase val158 met genotype associated with schizotypy but not cognition: A population study in 543 young men

    Nicholas C. Stefanis;Nicholas C. Stefanis;Jim Van Os;Dimitrios Avramopoulos;Nikolaos Smyrnis;Nikolaos Smyrnis

  • Higher scores of self reported schizotypy in healthy young males carrying the COMT high activity allele.

    D. Avramopoulos;N. C. Stefanis;I. Hantoumi;N. Smyrnis;N. Smyrnis

  • Motor cortical activity preceding a memorized movement trajectory with an orthogonal bend

    James Ashe;Masato Taira;Nikolaos Smyrnis;Giuseppe Pellizzer

  • On the relations between single cell activity in the motor cortex and the direction and magnitude of three-dimensional static isometric force

    Masato Taira;Jyl Boline;Jyl Boline;Nikolaos Smyrnis;Nikolaos Smyrnis;Apostolos P. Georgopoulos

  • Large-Scale Cognitive GWAS Meta-Analysis Reveals Tissue-Specific Neural Expression and Potential Nootropic Drug Targets

    Max Lam;Joey W. Trampush;Jin Yu;Emma Knowles

  • Pleiotropic meta-analysis of cognition, education, and schizophrenia differentiates roles of early neurodevelopmental and adult synaptic pathways

    Max Lam;W. David Hill;Joey W. Trampush;Jin Yu

  • Screening Human Embryos for Polygenic Traits Has Limited Utility.

    Ehud Karavani;Or Zuk;Danny Zeevi;Nir Barzilai

  • The antisaccade task in a sample of 2,006 young males. II. Effects of task parameters.

    Smyrnis N;Evdokimidis I;Stefanis Nc;Constantinidis Ts

  • COMT Val158Met moderation of stress-induced psychosis

    Nicholas C. Stefanis;Cécile Henquet;Dimitrios Avramopoulos;Nikolaos Smyrnis;Nikolaos Smyrnis

  • Effect of COMT Val158Met polymorphism on the Continuous Performance Test, Identical Pairs Version: tuning rather than improving performance.

    Nicholas C. Stefanis;Jim van Os;Dimitrios Avramopoulos;Nikolaos Smyrnis

  • Frontal lobe dysfunction in amyotrophic lateral sclerosis.

    I Evdokimidis;T.S Constantinidis;P Gourtzelidis;N Smyrnis

Frequent Co-Authors

Ioannis Evdokimidis
Ioannis Evdokimidis Eginition Hospital
Dimitrios Avramopoulos
Dimitrios Avramopoulos Johns Hopkins University School of Medicine
Katherine E. Burdick
Katherine E. Burdick Brigham and Women's Hospital
Christoph Klein
Christoph Klein University of Freiburg
Todd Lencz
Todd Lencz Feinstein Institute for Medical Research
Panos Roussos
Panos Roussos Icahn School of Medicine at Mount Sinai
Aarno Palotie
Aarno Palotie University of Helsinki
Ole A. Andreassen
Ole A. Andreassen Oslo University Hospital
Srdjan Djurovic
Srdjan Djurovic Oslo University Hospital
Ingrid Melle
Ingrid Melle University of Oslo

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