Hirokage Ushijima

457 total citations
22 papers, 349 citations indexed

About

Hirokage Ushijima is a scholar working on Clinical Psychology, Psychiatry and Mental health and Experimental and Cognitive Psychology. According to data from OpenAlex, Hirokage Ushijima has authored 22 papers receiving a total of 349 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Clinical Psychology, 6 papers in Psychiatry and Mental health and 5 papers in Experimental and Cognitive Psychology. Recurrent topics in Hirokage Ushijima's work include Migration, Health and Trauma (11 papers), Posttraumatic Stress Disorder Research (10 papers) and Attention Deficit Hyperactivity Disorder (5 papers). Hirokage Ushijima is often cited by papers focused on Migration, Health and Trauma (11 papers), Posttraumatic Stress Disorder Research (10 papers) and Attention Deficit Hyperactivity Disorder (5 papers). Hirokage Ushijima collaborates with scholars based in Japan, United States and Philippines. Hirokage Ushijima's co-authors include Masahide Usami, Kazuhiko Saito, Yoshitaka Iwadare, Kyota Watanabe, Masaki Kodaira, Tetsuya Tanaka, Hiromi Tanaka, Manabu Ikeda, Masateru Matsushita and Daimei Sasayama and has published in prestigious journals such as PLoS ONE, The Journal of Pediatrics and Journal of Affective Disorders.

In The Last Decade

Hirokage Ushijima

22 papers receiving 342 citations

Peers

Hirokage Ushijima

ECP

EMS

PMH

Kyota Watanabe Japan

Yoshitaka Iwadare Japan

Masaki Kodaira Japan

Eizaburo Tanaka Japan

Akiko Kanehara Japan

Jessica Keyser United States

Frederick J. Humphrey United States

Lisa King Canada

Lana Ruvolo Grasser United States

Ari Lowell United States

Kyota Watanabe Japan

Hirokage Ushijima

270 ×1.2

59 ×0.9

ECP

46 ×0.9

EMS

67 ×1.3

59 ×1.3

PMH

Citations per year, relative to Hirokage Ushijima Hirokage Ushijima (= 1×) peers Kyota Watanabe

Countries citing papers authored by Hirokage Ushijima

Since Specialization

Citations

This map shows the geographic impact of Hirokage Ushijima's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Hirokage Ushijima with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hirokage Ushijima more than expected).

Fields of papers citing papers by Hirokage Ushijima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hirokage Ushijima. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Hirokage Ushijima. The network helps show where Hirokage Ushijima may publish in the future.

Co-authorship network of co-authors of Hirokage Ushijima

This figure shows the co-authorship network connecting the top 25 collaborators of Hirokage Ushijima. A scholar is included among the top collaborators of Hirokage Ushijima based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Hirokage Ushijima. Hirokage Ushijima is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Ushijima, Hirokage, et al.. (2020). <p>No Associations of Psychological Symptoms and Suicide Risk with Disaster Experiences in Junior High School Students 5 Years After the 2011 Great East Japan Earthquake and Tsunami</p>. Neuropsychiatric Disease and Treatment. Volume 16. 2377–2387. 6 indexed citations

Usami, Masahide, Crystal Amiel M. Estrada, Ernesto R. Gregorio, et al.. (2018). Addressing challenges in children’s mental health in disaster-affected areas in Japan and the Philippines – highlights of the training program by the National Center for Global Health and Medicine. BMC Proceedings. 12(S14). 65–65. 12 indexed citations

Usami, Masahide, Yoshitaka Iwadare, Kyota Watanabe, et al.. (2016). Long-Term Fluctuations in Traumatic Symptoms of High School Girls Who Survived from the 2011 Japan Tsunami: Series of Questionnaire-Based Cross-Sectional Surveys. Child Psychiatry & Human Development. 47(6). 1002–1008. 6 indexed citations

Usami, Masahide, Daimei Sasayama, Takashi Okada, et al.. (2015). Concerns Expressed by Parents of Children with Pervasive Developmental Disorders for Different Time Periods of the Day: A Case–Control Study. PLoS ONE. 10(4). e0124692–e0124692. 5 indexed citations

Usami, Masahide, Yoshitaka Iwadare, Kyota Watanabe, et al.. (2015). A case-control study of the difficulties in daily functioning experienced by children with depressive disorder. Journal of Affective Disorders. 179. 167–174. 7 indexed citations

Usami, Masahide, Yoshitaka Iwadare, Kyota Watanabe, et al.. (2014). Analysis of Changes in Traumatic Symptoms and Daily Life Activity of Children Affected by the 2011 Japan Earthquake and Tsunami over Time. PLoS ONE. 9(2). e88885–e88885. 20 indexed citations

Jono, Tadashi, et al.. (2014). Effects of testosterone therapy on bipolar disorder with Klinefelter syndrome. General Hospital Psychiatry. 37(2). 192.e1–192.e2. 6 indexed citations

Usami, Masahide, Yoshitaka Iwadare, Kyota Watanabe, et al.. (2014). Prosocial Behaviors during School Activities among Child Survivors after the 2011 Earthquake and Tsunami in Japan: A Retrospective Observational Study. PLoS ONE. 9(11). e113709–e113709. 13 indexed citations

Matsushita, Masateru, Asuka Koyama, Hirokage Ushijima, et al.. (2014). Sleep duration and its association with sleepiness and depression in “ronin-sei” preparatory school students. Asian Journal of Psychiatry. 9. 61–66. 16 indexed citations

10.

Usami, Masahide, Yoshitaka Iwadare, Kyota Watanabe, et al.. (2014). Decrease in the Traumatic Symptoms Observed in Child Survivors within Three Years of the 2011 Japan Earthquake and Tsunami. PLoS ONE. 9(10). e110898–e110898. 12 indexed citations

11.

Iwadare, Yoshitaka, Masahide Usami, Yuriko Suzuki, et al.. (2014). Posttraumatic Symptoms in Elementary and Junior High School Children after the 2011 Japan Earthquake and Tsunami: Symptom Severity and Recovery Vary by Age and Sex. The Journal of Pediatrics. 164(4). 917–921.e1. 31 indexed citations

12.

Usami, Masahide, Yoshitaka Iwadare, Masaki Kodaira, et al.. (2014). Did Parents and Teachers Struggle with Child Survivors 20 Months after the 2011 Earthquake and Tsunami in Japan? A Retrospective Observational Study. PLoS ONE. 9(5). e96459–e96459. 12 indexed citations

13.

Koyama, Asuka, Masateru Matsushita, Hirokage Ushijima, Tadashi Jono, & Manabu Ikeda. (2014). Association between depression, examination‐related stressors, and sense of coherence: The ronin‐sei study. Psychiatry and Clinical Neurosciences. 68(6). 441–447. 15 indexed citations

14.

Usami, Masahide, Takashi Okada, Daimei Sasayama, et al.. (2013). What Time Periods of the Day Are Concerning for Parents of Children with Attention Deficit Hyperactivity Disorder?. PLoS ONE. 8(11). e79806–e79806. 11 indexed citations

15.

Usami, Masahide, Yoshitaka Iwadare, Masaki Kodaira, et al.. (2013). Sleep Duration among Children 8 Months after the 2011 Japan Earthquake and Tsunami. PLoS ONE. 8(5). e65398–e65398. 29 indexed citations

16.

Mikami, Akira, Masateru Matsushita, Hiroyoshi Adachi, et al.. (2013). Sense of coherence, health problems, and presenteeism in Japanese university students. Asian Journal of Psychiatry. 6(5). 369–372. 18 indexed citations

17.

Sasayama, Daimei, Yoshitaka Iwadare, Hirokage Ushijima, et al.. (2013). Dysfunction of orbitofrontal and dorsolateral prefrontal cortices in children and adolescents with high-functioning pervasive developmental disorders. Annals of General Psychiatry. 12(1). 31–31. 11 indexed citations

18.

Ushijima, Hirokage, Masahide Usami, Kazuhiko Saito, Masaki Kodaira, & Manabu Ikeda. (2012). Time course of the development of depressive mood and oppositional defiant behavior among boys with attention deficit hyperactivity disorder: Differences between subtypes. Psychiatry and Clinical Neurosciences. 66(4). 285–291. 6 indexed citations

19.

Iwadare, Yoshitaka, Hirokage Ushijima, Motoichiro Kato, et al.. (2012). Poor performance on the Iowa gambling task in children with obsessive-compulsive disorder. Annals of General Psychiatry. 11(1). 25–25. 23 indexed citations

20.

Usami, Masahide, Yoshitaka Iwadare, Masaki Kodaira, et al.. (2012). Relationships between Traumatic Symptoms and Environmental Damage Conditions among Children 8 Months after the 2011 Japan Earthquake and Tsunami. PLoS ONE. 7(11). e50721–e50721. 50 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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