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 40 8049 7513 4309 3921 256 13246

Joseph J. Ryan publications per year

The chart shows the history of publications by Joseph J. Ryan between 1973 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Joseph J. Ryan published across 53 years, from 1973 to 2025, averaging 5.3 papers a year. Output peaked at 14 publications in 1994. 5 of the 282 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1973 to 2025. Vertical axis: number of publications, 0 to 14. Peak 14 publications in 1994. 1973: 2 publications 1974: 0 publications 1975: 0 publications 1976: 1 publication 1977: 1 publication 1978: 0 publications 1979: 1 publication 1980: 1 publication 1981: 5 publications 1982: 5 publications 1983: 10 publications 1984: 10 publications 1985: 7 publications 1986: 4 publications 1987: 2 publications 1988: 5 publications 1989: 3 publications 1990: 6 publications 1991: 9 publications 1992: 12 publications 1993: 6 publications 1994: 14 publications 1995: 6 publications 1996: 10 publications 1997: 9 publications 1998: 9 publications 1999: 8 publications 2000: 9 publications 2001: 9 publications 2002: 3 publications 2003: 5 publications 2004: 8 publications 2005: 3 publications 2006: 7 publications 2007: 6 publications 2008: 10 publications 2009: 12 publications 2010: 8 publications 2011: 0 publications 2012: 6 publications 2013: 4 publications 2014: 2 publications 2015: 5 publications 2016: 1 publication 2017: 1 publication 2018: 3 publications 2019: 1 publication 2020: 5 publications 2021: 6 publications 2022: 9 publications 2023: 8 publications 2024: 4 publications 2025: 1 publication
1973 2025

282 publications in total across all disciplines

View publications per year as a table
Joseph J. Ryan: publications per year, 1973 to 2025
Year Publications
1973 2
1974 0
1975 0
1976 1
1977 1
1978 0
1979 1
1980 1
1981 5
1982 5
1983 10
1984 10
1985 7
1986 4
1987 2
1988 5
1989 3
1990 6
1991 9
1992 12
1993 6
1994 14
1995 6
1996 10
1997 9
1998 9
1999 8
2000 9
2001 9
2002 3
2003 5
2004 8
2005 3
2006 7
2007 6
2008 10
2009 12
2010 8
2011 0
2012 6
2013 4
2014 2
2015 5
2016 1
2017 1
2018 3
2019 1
2020 5
2021 6
2022 9
2023 8
2024 4
2025 1
Total 282
Download as CSV

Joseph J. Ryan publications per year - data summary

  • Joseph J. Ryan, a Psychology scholar from University of Central Missouri, has 282 publications recorded across 53 years, from 1973 to 2025.
  • The oldest publication on record dates to 1973 and the most recent to 2025.
  • The most productive year is 1994, with 14 publications.
  • The least productive years with any output are 1976, 1977, 1979, 1980 and others, with 1 publication each.
  • 4 of the 53 years in the span carry no publications at all (1974, 1975, 1978 and 2011).
  • The rate of publication averages 5.3 papers per year over the whole span, or 5.8 per year counting only the 49 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 28 publications, 10% of the career total.
  • Split into equal eras - 1973-1990: 63 publications (3.5 per year); 1991-2008: 143 publications (7.9 per year); 2009-2025: 76 publications (4.5 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Joseph J. Ryan 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 Joseph J. Ryan 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, 251–260 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: 256 publications — 82nd percentile

82% 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
181–190 397
191–200 343
201–210 328
211–220 313
221–230 283
231–240 226
241–250 196
251–260 201 256
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

Joseph J. Ryan 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.
  • Joseph J. Ryan, a Psychology scholar from University of Central Missouri, records 256 publications - the 82nd percentile of the discipline.
  • 82% of ranked Psychology scientists score the same or lower than Joseph J. Ryan, and about 18% score higher.
  • The median of the discipline falls in the 151–160 publications range, and Joseph J. Ryan 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).

Joseph J. Ryan 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 Joseph J. Ryan 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, 40–41 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: 40 D-Index — 30th percentile

30% 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 40
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
Download as CSV

Joseph J. Ryan 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.
  • Joseph J. Ryan, a Psychology scholar from University of Central Missouri, records 40 D-Index - the 30th percentile of the discipline.
  • 30% of ranked Psychology scientists score the same or lower than Joseph J. Ryan, and about 70% score higher.
  • The median of the discipline falls in the 48–49 D-Index range, and Joseph J. Ryan 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).

Research.com Recognitions

  • 1994 - Fellow of the American Psychological Association (APA)

Overview

Joseph J. Ryan is affiliated with the University of Central Missouri in the United States. Their research spans primarily the fields of medicine and psychology, with a key focus on experimental and cognitive psychology, psychiatry and mental health, and clinical psychology. Additional areas of study include safety research and pulmonary and respiratory medicine.

The scientist's work covers several main topics, including dementia and cognitive impairment research, cognitive abilities and testing, cognitive functions and memory, child abuse and trauma, pharmaceutical studies and practices, respiratory and cough-related research, and multiple sclerosis research studies.

Joseph J. Ryan has published multiple papers over recent years. Some of the notable papers include:

  • "Wechsler memory scale-fourth edition (WMS-IV) in the neuropsychological evaluation of patients diagnosed with probable Alzheimer's disease," 2023, Applied Neuropsychology Adult
  • "Validity of the Wechsler Abbreviated Scale of Intelligence, Second Edition (WASI-II) as an Indicator of Neurological Disease/Injury: A Pilot Study," 2021, Brain Injury

Other papers in the broader dataset, although not authored by Ryan, indicate relevant research trends in their field:

  • "Discrimination in Multiphase Systems: Evidence from Child Protection," 2024, The Quarterly Journal of Economics
  • "The impact of drug palatability on prescribing and dispensing of antibiotic formulations for paediatric patients: a cross-sectional survey of general practitioners and pharmacists," 2023, Family Practice
  • "Memory Performance and Quantitative Neuroimaging Software in Mild Cognitive Impairment: A Concurrent Validity Study," 2020, Journal of the International Neuropsychological Society

Frequent co-authors collaborating with Ryan include:

  • Samuel T. Gontkovsky
  • David S. Kreiner
  • Gordon Teichner
  • E. Jason Baron
  • Joseph Doyle

The most common publication venues for Ryan's work are:

  • Applied Neuropsychology Adult
  • SSRN Electronic Journal
  • Journal of Psychoeducational Assessment
  • Goldschmidt Abstracts
  • arXiv (Cornell University)

Joseph J. Ryan was recognized as a Fellow of the American Psychological Association (APA) in 1994, which reflects a notable standing within the psychological research community.

Best Publications

  • Wechsler Adult Intelligence Scale-III

    Joseph J. Ryan;Shane J. Lopez

  • Physical Activity Across the Curriculum (PAAC): A randomized controlled trial to promote physical activity and diminish overweight and obesity in elementary school children

    Joseph E. Donnelly;Jerry L. Greene;Cheryl A. Gibson;Bryan K. Smith

  • Scoring Reliability on the Wechsler Adult Intelligence Scale-Third Edition (WAIS-III):

    Joseph J. Ryan;Summer D. Schnakenberg-Ott

  • Rey auditory-verbal learning test performance of patients with and without memory impairment

    Samuel J. Rosenberg;Joseph J. Ryan;Aurelio Prifitera

  • Age effects on Wechsler Adult Intelligence Scale-III subtests.

    Joseph J Ryan;Jerome M Sattler;Shane J Lopez

  • Physical activity across the curriculum: Year one process evaluation results

    Cheryl A Gibson;Bryan K Smith;Katrina D DuBose;J Leon Greene

  • Validity of the narcissistic personality inventory (NPI) in a psychiatric sample

    Aurelio Prifitera;Joseph J. Ryan

  • Dissociative Symptoms in a Substance Abuse Population

    G. E. Dunn;A. M. Paolo;Joseph J. Ryan;J. Van Fleet

  • A screening procedure for estimating premorbid intelligence in the elderly

    Joseph J. Ryan;Anthony M. Paolo

  • Subclinical hypothyroidism, mood, and cognition in older adults: a review

    Russell T. Joffe;Russell T. Joffe;Elizabeth N. Pearce;James V. Hennessey;Joseph J. Ryan

  • Validity, reliability, and standard errors of measurement for two seven-subtest short forms of the Wechsler Adult Intelligence Scale—III.

    Joseph J. Ryan;L. Charles Ward

  • Evaluation of seven-subtest short forms of the Wechsler Adult Intelligence Scale-III in a referred sample

    Bradley N Axelrod;Joseph J Ryan;L.Charles Ward

  • Standardization of the Wechsler Adult Intelligence Scale—Revised for persons 75 years and older.

    Joseph J. Ryan;Anthony M. Paolo;Terry M. Brungardt

  • Trauma Symptoms in Substance Abusers With and Without Histories of Childhood Abuse

    Gary E. Dunn;Joseph J. Ryan;Cynthia E. Dunn

  • California verbal learning test: Normative data for the elderly

    Anthony M. Paolo;Alexander I. Tröster;Joseph J. Ryan

  • Alternate form reliability and equivalency of the Rey Auditory Verbal Learning Test.

    Joseph J. Ryan;Michael E. Geisser;David M. Randall;Randy J. Georgemiller

  • Exploratory Factor Analysis of the Wechsler Abbreviated Scale of Intelligence (WASI) in Adult Standardization and Clinical Samples

    Joseph J. Ryan;Christine A. Carruthers;Lori J. Miller;Gary T. Souheaver

  • Factor analysis of the Rey auditory-verbal learning test

    J. J. Ryan;S. J. Rosenberg;W. Mittenberg

  • Administration Time Estimates for WAIS-III Subtests, Scales, and Short Forms in a Clinical Sample

    Joseph J. Ryan;Shane J. Lopez;Tamara R. Werth

  • Neuropsychological patterns in uremia.

    Gary T. Souheaver;Joseph J. Ryan;Alan S. Dewolfe

Frequent Co-Authors

Shane J. Lopez
Shane J. Lopez University of Kansas
Bradley N. Axelrod
Bradley N. Axelrod United States Department of Veterans Affairs
Alexander I. Tröster
Alexander I. Tröster Barrow Neurological Institute
Charles J. Golden
Charles J. Golden Nova Southeastern University
Russell T. Joffe
Russell T. Joffe Rutgers, The State University of New Jersey
Philip Schatz
Philip Schatz Saint Joseph's University
Leslie Atkinson
Leslie Atkinson Toronto Metropolitan University
Robert S. Stern
Robert S. Stern Beth Israel Deaconess Medical Center
William C. Koller
William C. Koller University of Miami
Robert Goldman
Robert Goldman Sunovion (United States)

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

Exploring a future in psychology unlocks diverse online degree options and career opportunities, including roles like Marriage and Family Therapist (MFT). Aspiring MFTs should be aware that certification and education requirements can vary greatly between states and even cities.

For example, those considering practicing in Baltimore must review the Baltimore mft certification requirements to ensure they meet state and local guidelines. Similarly, students planning to work in Idaho should familiarize themselves with the Boise mft education requirements for licensure eligibility.

If Boston is your destination, understanding how to become an mft in Boston is essential for navigating local credentialing processes. Likewise, meeting mft requirements in Buffalo is critical for successful practice in that region.

Overall, pursuing an online psychology degree gives you flexibility, but always research the specific regulations and training needed for your preferred location and career path.

Best Scientists Citing Joseph J. Ryan

Trending Scientists

Recently Published Articles