| Discipline name | D-Index | World Ranking | Current World Ranking | National Ranking | Current National Ranking | Publications | Citations |
|---|---|---|---|---|---|---|---|
| Social Sciences and Humanities | 50 | 2795 | 2554 | 35 | 34 | 236 | 9078 |
The chart shows the history of publications by Ka-Fai Chung between 1984 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ka-Fai Chung published across 42 years, from 1984 to 2025, averaging 6.3 papers a year. Output peaked at 20 publications in 2018. 19 of the 263 publications appeared in the last two years.
263 publications in total across all disciplines
| Year | Publications |
|---|---|
| 1984 | 1 |
| 1985 | 0 |
| 1986 | 0 |
| 1987 | 0 |
| 1988 | 0 |
| 1989 | 0 |
| 1990 | 0 |
| 1991 | 0 |
| 1992 | 2 |
| 1993 | 0 |
| 1994 | 1 |
| 1995 | 1 |
| 1996 | 7 |
| 1997 | 6 |
| 1998 | 5 |
| 1999 | 8 |
| 2000 | 10 |
| 2001 | 3 |
| 2002 | 6 |
| 2003 | 5 |
| 2004 | 5 |
| 2005 | 5 |
| 2006 | 4 |
| 2007 | 2 |
| 2008 | 5 |
| 2009 | 3 |
| 2010 | 9 |
| 2011 | 9 |
| 2012 | 15 |
| 2013 | 3 |
| 2014 | 15 |
| 2015 | 18 |
| 2016 | 16 |
| 2017 | 19 |
| 2018 | 20 |
| 2019 | 9 |
| 2020 | 8 |
| 2021 | 13 |
| 2022 | 6 |
| 2023 | 5 |
| 2024 | 6 |
| 2025 | 13 |
| Total | 263 |
The chart shows the distribution of publications by all Research.com ranked scientists in the field of Social Sciences and Humanities in 2026. The highlighted bar marks where Ka-Fai Chung sits on this spectrum.
This scientist: 236 publications — 75th percentile
75% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 570 publications or more.
| Publications | Scientists | This scientist |
|---|---|---|
| 44–53 | 28 | |
| 54–63 | 61 | |
| 64–73 | 161 | |
| 74–83 | 225 | |
| 84–93 | 301 | |
| 94–103 | 390 | |
| 104–113 | 406 | |
| 114–123 | 474 | |
| 124–133 | 453 | |
| 134–143 | 434 | |
| 144–153 | 407 | |
| 154–163 | 411 | |
| 164–173 | 391 | |
| 174–183 | 313 | |
| 184–193 | 319 | |
| 194–203 | 304 | |
| 204–213 | 285 | |
| 214–223 | 246 | |
| 224–233 | 213 | |
| 234–243 | 170 | 236 |
| 244–253 | 167 | |
| 254–263 | 162 | |
| 264–273 | 138 | |
| 274–283 | 138 | |
| 284–293 | 113 | |
| 294–303 | 106 | |
| 304–313 | 95 | |
| 314–323 | 101 | |
| 324–333 | 81 | |
| 334–343 | 69 | |
| 344–353 | 56 | |
| 354–363 | 36 | |
| 364–373 | 42 | |
| 374–383 | 41 | |
| 384–393 | 44 | |
| 394–403 | 27 | |
| 404–413 | 30 | |
| 414–423 | 20 | |
| 424–433 | 29 | |
| 434–443 | 29 | |
| 444–453 | 25 | |
| 454–463 | 19 | |
| 464–473 | 21 | |
| 474–483 | 11 | |
| 484–493 | 17 | |
| 494–503 | 7 | |
| 504–513 | 6 | |
| 514–523 | 12 | |
| 524–533 | 10 | |
| 534–543 | 7 | |
| 544–553 | 6 | |
| 554–563 | 12 | |
| 564–569 | 8 | |
| 570+ | 100 |
The chart shows the D-index (discipline H-index) distribution of Social Sciences and Humanities scientists ranked by Research.com in 2026. The highlighted bar marks where Ka-Fai Chung sits on this spectrum.
This scientist: 50 D-Index — 66th percentile
66% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 100 D-Index or more.
| D-Index | Scientists | This scientist |
|---|---|---|
| 30 | 177 | |
| 31 | 210 | |
| 32 | 222 | |
| 33 | 188 | |
| 34 | 181 | |
| 35 | 243 | |
| 36 | 261 | |
| 37 | 272 | |
| 38 | 278 | |
| 39 | 300 | |
| 40 | 297 | |
| 41 | 308 | |
| 42 | 313 | |
| 43 | 300 | |
| 44 | 269 | |
| 45 | 260 | |
| 46 | 228 | |
| 47 | 251 | |
| 48 | 203 | |
| 49 | 186 | |
| 50 | 187 | 50 |
| 51 | 166 | |
| 52 | 138 | |
| 53 | 141 | |
| 54 | 131 | |
| 55 | 137 | |
| 56 | 109 | |
| 57 | 129 | |
| 58 | 95 | |
| 59 | 105 | |
| 60 | 106 | |
| 61 | 86 | |
| 62 | 94 | |
| 63 | 77 | |
| 64 | 79 | |
| 65 | 59 | |
| 66 | 68 | |
| 67 | 51 | |
| 68 | 49 | |
| 69 | 40 | |
| 70 | 43 | |
| 71 | 40 | |
| 72 | 50 | |
| 73 | 46 | |
| 74 | 43 | |
| 75 | 45 | |
| 76 | 45 | |
| 77 | 30 | |
| 78 | 25 | |
| 79 | 31 | |
| 80 | 29 | |
| 81 | 18 | |
| 82 | 21 | |
| 83 | 26 | |
| 84 | 15 | |
| 85 | 15 | |
| 86 | 19 | |
| 87 | 19 | |
| 88 | 12 | |
| 89 | 7 | |
| 90 | 19 | |
| 91 | 20 | |
| 92 | 13 | |
| 93 | 9 | |
| 94 | 13 | |
| 95 | 8 | |
| 96 | 7 | |
| 97 | 6 | |
| 98 | 6 | |
| 99 | 6 | |
| 100+ | 97 |
Ka-Fai Chung is affiliated with the University of Hong Kong in China. Their research primarily focuses on psychology, neuroscience, and medicine, with particular specialization in experimental and cognitive psychology, clinical psychology, and cognitive neuroscience. Their work also extends to social psychology and psychiatry and mental health.
The scientist has contributed extensively to topics related to sleep and related disorders, covering areas such as sleep and wakefulness research, circadian rhythm and melatonin, and tryptophan and brain disorders. Additional research interests include mental health research and the impact of COVID-19 on mental health, as well as eating disorders and behaviors.
Recent papers authored or coauthored by Ka-Fai Chung include the following:
Their frequent coauthors include Wing-Fai Yeung, Fiona Yan-Yee Ho, Branda Yee-Man Yu, Vincent Wing-Hei Wong, and Heidi Ka Ying Lo.
Ka-Fai Chung often publishes research findings in specialized academic journals. Venues with multiple publications include the Journal of Affective Disorders, Sleep Medicine, International Journal of Environmental Research and Public Health, and Journal of Consulting and Clinical Psychology. The scientist has also published work in JAMA Network Open.
Mary S.M. Ip;Bing Lam;Ian J. Lauder;Kenneth W.T. Tsang
Ka Fai Chung;Katherine Ka Ki Kan;Wing Fai Yeung
Ka-Fai Chung;Miao-Miao Cheung
Daniel K.L. Cheuk;Wing Fai Yeung;K. F. Chung;Virginia Wong
Ka Fai Chung;Chit Tat Lee;Wing Fai Yeung;Man Sum Chan
Tommy H. Ng;Ka Fai Chung;Fiona Yan Yee Ho;Wing Fai Yeung
Fiona Yan-Yee Ho;Ka-Fai Chung;Wing-Fai Yeung;Tommy H. Ng
Ka Fai Chung;Wing Fai Yeung;Fiona Yan Yee Ho;Kam Ping Yung
Wing Fai Yeung;Ka Fai Chung;Shi Ping Zhang;Tuan Gee Yap
K.F Chung
Wing Fai Yeung;Ka Fai Chung;Maggie Man Ki Poon;Fiona Yan Yee Ho
Man-Sum Chan;Ka-Fai Chung;Kam-Ping Yung;Wing-Fai Yeung
Ka Fai Chung
K.F. Chung;Eric Y.H. Chen;Catherine S.M. Liu
Jessie Sm M. Chan;Rainbow Th H. Ho;Ka-Fai Chung;Chong-Wen Wang
Wing Fai Yeung;Ka Fai Chung;Maggie Man-Ki Poon;Fiona Yan-Yee Ho
K. F. Chung;M. C. Wong
Parco M. Siu;Angus P. Yu;Bjorn T. Tam;Edwin C. Chin
Wing-Fai Yeung;Ka-Fai Chung;Kwok-Chu Tso;Shi-Ping Zhang
Wing-Fai Yeung;Ka-Fai Chung;Kam-Ping Yung;Tommy Ho-Yee Ng
Wing Fai Yeung;Ka Fai Chung;Yau Kwong Leung;Shi Ping Zhang
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