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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Psychology 36 9314 8706 4925 4486 85 13705

Seppo E. Iso-Ahola publications per year

The chart shows the history of publications by Seppo E. Iso-Ahola between 1975 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Seppo E. Iso-Ahola published across 50 years, from 1975 to 2024, averaging 1.7 papers a year. Output peaked at 11 publications in 1980. 4 of the 85 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1975 to 2024. Vertical axis: number of publications, 0 to 11. Peak 11 publications in 1980. 1975: 1 publication 1976: 4 publications 1977: 4 publications 1978: 1 publication 1979: 4 publications 1980: 11 publications 1981: 1 publication 1982: 4 publications 1983: 1 publication 1984: 1 publication 1985: 2 publications 1986: 3 publications 1987: 2 publications 1988: 3 publications 1989: 2 publications 1990: 1 publication 1991: 2 publications 1992: 0 publications 1993: 1 publication 1994: 1 publication 1995: 2 publications 1996: 1 publication 1997: 0 publications 1998: 2 publications 1999: 0 publications 2000: 2 publications 2001: 0 publications 2002: 0 publications 2003: 0 publications 2004: 0 publications 2005: 0 publications 2006: 4 publications 2007: 0 publications 2008: 1 publication 2009: 3 publications 2010: 0 publications 2011: 0 publications 2012: 0 publications 2013: 3 publications 2014: 2 publications 2015: 2 publications 2016: 3 publications 2017: 3 publications 2018: 0 publications 2019: 0 publications 2020: 2 publications 2021: 1 publication 2022: 1 publication 2023: 2 publications 2024: 2 publications
1975 2024

85 publications in total across all disciplines

View publications per year as a table
Seppo E. Iso-Ahola: publications per year, 1975 to 2024
Year Publications
1975 1
1976 4
1977 4
1978 1
1979 4
1980 11
1981 1
1982 4
1983 1
1984 1
1985 2
1986 3
1987 2
1988 3
1989 2
1990 1
1991 2
1992 0
1993 1
1994 1
1995 2
1996 1
1997 0
1998 2
1999 0
2000 2
2001 0
2002 0
2003 0
2004 0
2005 0
2006 4
2007 0
2008 1
2009 3
2010 0
2011 0
2012 0
2013 3
2014 2
2015 2
2016 3
2017 3
2018 0
2019 0
2020 2
2021 1
2022 1
2023 2
2024 2
Total 85
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Seppo E. Iso-Ahola publications per year - data summary

  • Seppo E. Iso-Ahola, a Psychology scholar from University of Maryland, College Park, has 85 publications recorded across 50 years, from 1975 to 2024.
  • The oldest publication on record dates to 1975 and the most recent to 2024.
  • The most productive year is 1980, with 11 publications.
  • The least productive years with any output are 1975, 1978, 1981, 1983 and others, with 1 publication each.
  • 14 of the 50 years in the span carry no publications at all (1992, 1997, 1999, 2001 and others).
  • The rate of publication averages 1.7 papers per year over the whole span, or 2.4 per year counting only the 36 years with at least one publication.
  • The last 5 years on the chart (2020-2024) hold 8 publications, 9% of the career total.
  • Split into equal eras - 1975-1991: 47 publications (2.8 per year); 1992-2008: 14 publications (0.8 per year); 2009-2024: 24 publications (1.5 per year).
  • Comparing the opening and closing eras, the overall trend of publication is declining.

Seppo E. Iso-Ahola 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 Seppo E. Iso-Ahola 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, 81–90 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: 85 publications — 11th percentile

11% 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 85
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
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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Seppo E. Iso-Ahola 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.
  • Seppo E. Iso-Ahola, a Psychology scholar from University of Maryland, College Park, records 85 publications - the 11th percentile of the discipline.
  • 11% of ranked Psychology scientists score the same or lower than Seppo E. Iso-Ahola, and about 89% score higher.
  • The median of the discipline falls in the 151–160 publications range, and Seppo E. Iso-Ahola 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).

Seppo E. Iso-Ahola 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 Seppo E. Iso-Ahola 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, 36–37 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: 36 D-Index — 19th percentile

19% 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 36
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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Seppo E. Iso-Ahola 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.
  • Seppo E. Iso-Ahola, a Psychology scholar from University of Maryland, College Park, records 36 D-Index - the 19th percentile of the discipline.
  • 19% of ranked Psychology scientists score the same or lower than Seppo E. Iso-Ahola, and about 81% score higher.
  • The median of the discipline falls in the 48–49 D-Index range, and Seppo E. Iso-Ahola 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

Seppo E. Iso-Ahola is affiliated with the University of Maryland, College Park in the United States. Their research primarily focuses on psychology, with contributions spanning several subfields including social psychology, general decision sciences, sociology and political science, atomic and molecular physics and optics, as well as developmental and educational psychology.

Iso-Ahola's work covers diverse topics such as decision-making and behavioral economics, recreation and leisure management, sport and mega-event impacts, psychological well-being and life satisfaction, quantum mechanics, paranormal experiences and beliefs, and sport psychology and performance.

Their recent publications include:

  • "Leisure and meaning in life" (2023) published in Frontiers in Psychology
  • "Replication and the Establishment of Scientific Truth" (2020) published in Frontiers in Psychology
  • "Toward a theory of conscious-nonconscious processing and getting hard (and easy) things done in everyday life." (2021) published in Psychology of Consciousness Theory Research and Practice
  • "A theory of the skill-performance relationship" (2024) published in Frontiers in Psychology
  • "Science of psychological phenomena and their testing." (2024) published in American Psychologist

Iso-Ahola frequently publishes in Frontiers in Psychology, with four articles appearing there, as well as contributions to American Psychologist, Psychology of Consciousness Theory Research and Practice, and Medical Research Archives.

The scientist collaborates with other researchers in the field, including Roy F. Baumeister.

Best Publications

  • Toward a social psychological theory of tourism motivation: A rejoinder

    Seppo E. Iso-Ahola

  • The Social Psychology of Leisure and Recreation

    Seppo E. Iso-Ahola

  • Psychological nature of leisure and tourism experience

    Roger C. Mannell;Seppo E. Iso-Ahola

  • Leisure and health: the role of social support and self-determination.

    Denis Coleman;Seppo E. Iso-Ahola

  • Sightseeing tourists' motivation and satisfaction

    Elizabeth L. Dunn Ross;Seppo E. Iso-Ahola

  • Leisure-Related Social Support and Self-Determination as Buffers of Stress-Illness Relationship

    Seppo E. Iso-Ahola;Chun J. Park

  • Perceptions of Boredom in Leisure: Conceptualization, Reliability and Validity of the Leisure Boredom Scale

    Seppo E. Iso-Ahola;Ellen Weissinger

  • Adolescent substance abuse and leisure boredom.

    Seppo E. Iso-Ahola;Edward D. Crowley

  • Towards a social psychology of recreational travel.

    Seppo E. Iso-Ahola

  • Starting, Ceasing, and Replacing Leisure Activities over the Life-Span

    Seppo E. Iso-Ahola;Edgar Jackson;Elaine Dunn

  • The dynamics of leisure motivation: the effects of outcome on leisure needs.

    Seppo E. Iso-Ahola;Jon R. Allen

  • Basic dimensions of definitions of leisure.

    Seppo E. Iso-Ahola

  • Leisure and Boredom

    Seppo E. Iso-Ahola;Ellen Weissinger

  • Social and psychological constraints on leisure.

    S. E. Iso-Ahola;R. C. Mannell;M.G. Wade

  • Psychology of Sports: A Social Psychological Approach

    Seppo E. Iso-Ahola;Bradley Douglas Hatfield

  • A psychological analysis of leisure and health

    Seppo E. Iso-Ahola

  • Enhancing a sense of independence and psychological well-being among the elderly: A field experiment.

    Mark S. Searle;Michael J. Mahon;Seppo E. Iso-Ahola;Heather Adam

  • Social psychological perspectives on leisure and recreation

    Seppo E. Iso-Ahola

  • A theory of substitutability of leisure behavior.

    Seppo E. Iso‐Ahola

  • Psychological Momentum: Why Success Breeds Success:

    Seppo E. Iso-Ahola;Charles O. Dotson

  • Toward a Theory of Exercise Motivation.

    Seppo E. Iso-Ahola;Brian St. Clair

Frequent Co-Authors

Bradley D. Hatfield
Bradley D. Hatfield University of Maryland, College Park
Roger C. Mannell
Roger C. Mannell University of Waterloo
Douglas A. Kleiber
Douglas A. Kleiber University of Georgia
Heather J. Adam
Heather J. Adam University of Manitoba
Alan R. Graefe
Alan R. Graefe Pennsylvania State University
Edgar L. Jackson
Edgar L. Jackson University of Alberta

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