Online Symposium of The International Hikikomori Research Consortium


We are pleased to announce that Online Symposium of The International Hikikomori Research Consortium will be held on 6 February 2021.
Hikikomori, a form of pathological social withdrawal, has been highlighted in Japan since the 1990s. Now, in Japan, the Japan Cabinet Office estimated the number of individuals with hikikomori more than one million, however there is still no fundamental solution to this issue. Our international research has revealed that the hikikomori phenomenon is now spreading all over the world. Furthermore, there are concerns that the global epidemic of COVID-19 will increase the number of hikikomori. Traditionally, hikikomori has been viewed in some fields such as psychiatry, psychology, and sociology mainly in Japan. Until now, there are few evidence-based treatments for hikikomori.
In order to overcome many issues associated with hikikomori, experts from various fields around the world will gather to discuss the topics. We will also talk about the hikikomori-related issues in the COVID-19 era. We hope that professionals interested in supporting and studying hikikomori will join us.

Date  :
Saturday, February 6, 2021 14:00-19:10 JST (6:00-11:10 CET)
Venue  :
Web hosting
Eligibility  :
Professionals who are involved in supports and/or research focusing on hikikomori and hikikomori-related problems.
Participation fee  :
Capacity  :
The first 40 people
Application deadline  :
Thursday, January 14, 2021


6 February 2021
14:00-19:10 JST (6:00-11:10 CET)

Opening Remarks

14:00-14:10 JST (6:00-6:10 CET)

Welcome Speech

Tomohiro Nakao
(Professor, Department of Neuropsychiatry, Graduate School of Medical Sciences, Kyushu University, Japan)

Session I

14:10-15:30 JST (6:10-7:30 CET)

Hikikomori (1)


Multidimensional Assessment of Hikikomori

Takahiro A. KATO (Kyushu University, Japan)

Hikikomori Around the Globe

Alan R. Teo (Oregon Health and Science University, USA)

Hikikomori in Korea

Tae Young Choi (Catholic University of Daegu, South Korea)

Internet addiction and hikikomori

Masaru Tateno (Tokiwa Hospital, Japan)

Young Investigators’
Short Talk

Hikikomori in social media:
analysis of Twitter contents in Japanese and Western languages

Victor Pereira-Sanchez (Department of Child and Adolescent Psychiatry, NYU Grossman School of Medicine, USA)


Naotaka Shinfuku (Kobe University/Seinan University, Japan)

Chaired by:
Takahiro A. Kato & Alan R. Teo

Session II

15:50-17:20 JST (7:50-9:20 CET)

Hikikomori (2)


Psychology of Motivation and Hikikomori: The Self-Determination Perspective

Ayumi Tanaka (Doshisha University, Japan)

Online Social Capital Accumulation and Its Related Factors:
A Comparative Study between Ordinary Youth and Hidden Youth

Gloria Hong Yee Chan (City University of Hong Kong, Hong Kong)

School refusal among children and adolescents

Masahide Usami (Kohnodai Hospital, Japan)

Young Investigators’
Short Talks

Autism Spectrum Conditions in Hikikomori

Ryoko Katsuki (Kyushu University, Japan)

Hikikomori and self: the developmental perspective

Alison Fang-Wei Wu (Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK)

Socially isolated children - Hikikomori, Loneliness or Autism?:
Experiences at a specialist ASD referral service in the UK

Marcus P. J. Tan (South London and Maudsley NHS Foundation Trust, UK)


Norman Sartorius (Association for the Improvement of Mental Health Programs, Switzerland)

Chaired by:
Tae Young Choi & Masaru Tateno

Session III

7:40-19:00 JST (9:40-11:00 CET)

Hikikomori Support System
and Interventions


Hikikomori in Hong Kong: Challenges and Gaps in the New Normal

Paul Wai-Ching Wong (University of Hong Kong, Hong Kong)

FUKUOKA Model: Cooperation with YOKAYOKA ROOM, Fukuoka/Chikugo SAPOSUTE, WAKAMADO

Michiko Asami (NPO JACFA, Japan)

An integrated social-mental health model:
Outreach to school age children and youth presenting with early hidden youth phenomenon

John Wong Chee Meng (National University of Singapore and National University hospital, Singapore)

CBT-based Intervention for Hikikomori

Motohiro Sakai (University of Miyazaki, Japan)

Young Investigators’
Short Talk

Hikikomori intervention program for family members based on MHFA

Hiroaki Kubo (Kyushu University, Japan)


Jair Mari (Universidade Federal de Sao Paulo, Brasil)

Chaired by:
Paul Wai-Ching Wong & Motohiro Sakai

Closing Remarks

19:00-19:10 JST (11:00-11:10 CET)

Takahiro A. Kato (Kyushu University, Japan)

If you have any questions, please feel free to contact the secretariat.
We look forward to seeing you at the Symposium.


Takahiro A. Kato, MD, PhD
The International Hikikomori Research Consortium
Department of Psychiatry, Graduate School of Medicine, Kyushu University
Depression/Hikikomori Research Clinic, Kyushu University Hospital

Contact email adress :