Editorial rules
1. The Journal is the English-language official journal of the Association for the Study of Developmental
Disabilities, and in principle publishes one volume per year as an online journal.
2. Both members and non-members of the Society may submit papers to the journal. However, theCorresponding Author must be a member of the Society and must be the person responsible for thecorrespondence during the submission process.
3. Articles to be published must be unpublished in other journals and not infringe other copyrights.
4. Double submissions must not be made. In addition, papers that should originally be submitted as asingle paper must not be split into multiple papers.
5.The acceptance or rejection of papers and other articles for publication and the order in which they are
published are decided by the Editorial Board.
6.The copyright of the articles and other papers published in this journal belongs to the Japanese Society
for Developmental Disorders. However, the responsibility for the content of the papers rests with theauthors of the papers concerned.
7. Ethically problematic research and representations are not permitted. Historical expressions may beincluded as they are for academic reasons.
8.In addition to papers submitted in English, the Editorial Board may request a Japanese translation of theEnglish abstract (a 400-800 character description in Japanese of the methods, results, conclusions, etc.).
9. All types of papers will be reviewed by two referees, and Japanese may be used to communicate theresults of the review and revision comments.
Rules for submission
1. Screening areas
The journal has review areas on developmental disabilities and related areas of health, welfare,work,education and psychology.
2. Responsibility of the contributor
The contributor alone is responsible for the content of the published article. In experiments involving

humans and animals, care must be taken to ensure that human rights are protected and that there is noabuse of animals. Articles and other materials submitted for publication shall clearly state the statements
made in accordance with these ethical considerations.
3. Type and content of submitted papers
3.1. TypeThe papers accepted for submission are original papers (theoretical or practical research papers), casestudies (original papers dealing with case studies)
Material (articles, research reports and practice reports with material value), Short reports (short original
papers dealing with preliminary research), Reviews and perspectives (research papers summarisinginternal and external research on a specific subject).
3.2. Length of the paper
Original articles, case studies and materials should not exceed 8 printed pages (up to 8 figures andtables).
Reviews and perspectives should not exceed 6 printed pages (up to 6 figures/tables).
Short reports should be no more than 3 pages in print (no more than 3 figures/tables).
The specified length of the paper is the number of printed pages, including cover page (title, authors,abstract, keywords), text, references and figures (one printed page without figures and tables can containapproximately 730 English words).
4. Language of use
The language of the Journal shall be English.
5.1. How to submit a paper
5.1 Submission of submitted papers
5.1.1. non-native English speakers should have their papers checked by a native speaker before
submission.
5.1.2. Submission instructions are provided separately.
6.1. Review of papers
6.1 All papers shall be reviewed by the Editorial Board. The review is also carried out by peer review.
6.2 Receipt and acceptance of papers
The date of receipt of the submission shall be the date of receipt of the paper, and the date of acceptanceshall be the date of adoption after the decision to publish by the Editorial Board. Accepted papers shall be
reviewed and proofread by the Editorial Board.
7. Publication fee.
The publication fee shall be JPY 30,000. An additional fee calculated from the printing costs may belevied from the contributor for papers that exceed the word limit indicated in the submission rules.

8. CopyrightAll copyright (including the rights under Articles 27 and 28 of the Copyright Act) in the articles publishedin the Journal
The responsibility for the content of the article shall, however, rest with the author(s) of the article.
However, the responsibility for the content of the articles shall be borne by the author(s) of the article
concerned.
【Contact information】
Journal of Developmental Disabilities Research [JDDR] Editorial Office
Japanese Association for the Study of Developmental Disabilities
Room 402, Paredool Rikugien Kita, 1-9-10 Nakazato, Kita-ku, Tokyo 114-0015, Japan
E-mail: office@jasd.org
TEL: ＋81-3- 5814-8022

Journal of Developmental Disabilities Research 〔JDDR〕
Edited and published byJapanese Association for the Study of Developmental Disabilities
President/Shinya Miyamoto
Chief Editor/ Soichi Hashimoto

Vice Chief Editor/ Takahiro Watanabe

EDITORIAL BOARD
Y. Enomoto

T. GotoM. Inoue

S. Isawa

M. Kataoka

K. Korenaga

H. Kotani

M. OkaT. Okada

M. Omura

H. Shimoda

A. Takenouchi

T. Tanno

A. Yamaguchi

EDITORIAL COMMITTEE
H. Arai

H. Arikawa

H. Fujino

H. Goma

K. Haishi

T. Hayashi

K. Higuchi

N. Hirasawa

K. HosokawaF. Imaeda

M. Inagaki

S. Ishida

H. Itoh

M. Izumi

Y. KadoY. Kamio

T. Kanazawa

H. Kanbayashi

K. Kanno

N.Kawai

K. Kikuchi

T. Kikuchi

D. Kinoshita

Y. Kitajima

J. Kobayashi

K. Kobayashi

M. Kojima

K. Koreeda

M. Kumoi

Y. Kyobayashi

K. Manabe

K. Maruyama

N. Matsui

T. Miura

T. Morichi

T. Muranaka

N. Nagoshi

T. NagoyaE. Nakagawa

Y. Nakamura

K. Noguchi

K. Odaka

K. Oishi

S. Okamura

S. Okazawa

H. Okuzumi

A. Ozawa

S. Sanada

T. Sanagi

K. SatoH. Sekido

A. Senga

T. Shiga

K. Tajitsu

Y. Tamekawa

H. Shiokawa

Y. Umenaga

M. Ushiyama

I. Wakabayashi

M. Wakui

M. Watanabe

M. Watanabe

T. Yamada

S. Yamanaka

H. Yoshino

M. Yoshitoshi
ENGLISH REVISIONSHINNIHON PRINTING INC
MANAGING EDITORS
R. Kumagai

D. Saito

S. Tanaka

JAPANESE ASSOCIATION FOR STUDY OF DEVELOPMENTAL DISABILITIES
1-9-10-402 , Paredool Rikugien Kita, Nakazato, Kita-ku, Tokyo 114-0015, Japan