Fumi Seki, Gen Takagi, Kohei Koiwa, Naoto Nihonmatsu, Koubun Wakashima. Typology of Conditional Self-acceptance in Association with Positivity and Stress Response. International Journal of Brief Therapy and Family Science. 2023. 13. 1. 6-14
Koubun Wakashima, Saeko Kamoshida, Naoto Nihonmatsu. Revision of the Three Steps Model. International Journal of Brief Therapy and Family Science. 2023. 13. 1. 1-5
Nihonmatsu, N, Hiraizumi, T, Takagi, G, Sakamoto, K, Ishitobi, A. Brief Coaching for Supporting Transitions in Employment. Interactional Journal of Brief therapy and Family science. 2020. 10. 2. 14-21
Nihonmatsu, N, Okuyama, S, Kobayashi, D, Takagi, G, Sakamoto, K, Hagidai, M, Wakashima, K. Trends of Family Research in Japan. Newsletter of the International Academiy of Family Psychology. 2020. 33. 13-18