Journal of the Asia-Japan Research Institute of Ritsumeikan University

ONLINE ISSN:2435-0184 PRINT ISSN:2435-2435-0192 Vol.1, July 2019 Vol.2, October 2020 Vol.3, October 2021 Vol.4, November 2022 Vol.5, October 2023 Vol.6, October 2024 Vol.7, October 2025 Vol. 8, 2026

Vol.8 Contents
Cover page, Editorial information
Table of Content
Editor's Preface		Yasushi KOSUGI	ⅰ
［Research Articles］
Content No.	Title	Author(s)	Number of Pages
11	Longitudinal Stability of Temperament Development from Infancy to Toddlerhood and Implications for Emotional and Behavioral Development: An Empirical Study of a Longitudinal Survey	Jietao LIAN, Yi SUN, Yuko YATO	21
12	Repositioning the Individual in Co-Creation and Ecosystem Research: Through the Lens of Open Innovation 2.0	Takako YAMADA	19
13	Political Affiliation and the Politics of Immigration in Japan: A Quantitative Analysis of National Diet Records	Maximilien Xavier REHM, Richard D. P. EAST	17
[Brief Research Report and Field Work Report]
Content No.	Title	Author(s)	Number of Pages
41	Field Study Report on Japanese Language Education in Vietnamese Sending Organizations	Fumie MICHIGAMI, Ayaka HIRANO, NGUYEN Thi Hong Yen	7