Basic research to elucidate the mechanisms of stuttering and other fluency disorders
Development of evidence-based language and communication intervention and assessment tools
Social surveys to improve understanding and awareness of stuttering
Psychological support such as self-help or parental supports

• Iimura, D., Ishida, O. (2026). Characteristics of interoceptive heartbeat accuracy, sensibility, and awareness in adults who stutter. Acta Psychologica, 265, 106705.
  https://doi.org/10.1016/j.actpsy.2026.106705
• Iimura, D., Tsujita, N., Hagihara, H. (2026). Prospects for clinical reports on selective mutism conducted in Japan: A scoping review . Japanese Psychological Research, 68, 2, 369-390.
  https://doi.org/10.1111/jpr.12476
• Iimura, D., Tsujita, N., Aoki, M., Hagihara, H. (2025). Meta-analysis of behavioral treatments for selective mutism: Findings from Selective Mutism Questionnaire (SMQ) and School Speech Questionnaire (SSQ). Child and Adolescent Psychiatry and Mental Health, 19, 40.
  https://doi.org/10.1186/s13034-025-00891-8
• Iimura, D., Sakai, N., Miyamoto, S. (2025). An exploratory investigation of the association between severities of the adverse impact of stuttering and co-occurring disorders. Speech, Language, and Hearing,  28(1), 2371661.
  https://doi.org/10.1080/2050571X.2024.2371661
• Iimura, D., Ishida, O. (2023). Comparing the beliefs regarding biological or psychological causalities toward stereotyped perception of people who stutter. Frontiers in Psychology, 14, 1279169.
  https://doi.org/10.3389/fpsyg.2023.1279169
• Iimura, D., & Ishida, O. (2023). The influence of self-help/support group experience on people who stutter: A systematic review. Speech, Language, and Hearing, 26, 289-298.
  https://doi.org/10.1080/2050571X.202 2.2139954
• Iimura, D., Takahashi, S., Fukazawa, N., Morita, N., Oe, T., & Miyamoto, S. (2023). Effect of linguistic factors on the occurrence of stuttering-like disfluency among Japanese-speaking preschool children who stutter. Clinical Linguistics & Phonetics, 37(1), 1-16.
  https://doi.org/10.1080/02699206.2021.2001048
• Iimura, D., Koyama, Y., Kondo, H., Toyomura, A., & Boyle, M. (2022). Development of a short Japanese version of the Self-Stigma of Stuttering Scale (4S-J-16): Translation and evaluation of validity and reliability. Journal of Fluency Disorders, 73, 105917.
  https://doi.org/10.1016/j.jfludis.2022.105917
• Iimura, D., Kakuta, K., Oe, T., Kobayashi, H., Sakai, N., & Miyamoto, S. (2022). Treatment for school-aged children who stutter: A systematic review of Japanese literature. Language, Speech, and Hearing Services in Schools, 53, 561-583.
  https://pubs.asha.org/doi/10.1044/2021_LSHSS-21-00044
• Iimura, D., & Miyamoto, S. (2022). The influence of stuttering and co-occurring disorders on job difficulties among adults who stutter. Speech, Language, and Hearing, 25(2), 234-244.
  https://doi.org/10.1080/2050571X.2020.1852494
• Iimura, D., & Miyamoto, S. (2021). Public attitudes toward people who stutter in the workplace: a questionnaire survey of Japanese employees. Journal of Communication Disorders, 89, 106072.
  https://doi.org/10.1016/j.jcomdis.2020.106072
• Iimura, D., Ishida, O., Takahashi, S., Yokoi, H. & Miyamoto, S. (2021).
  A questionnaire survey about support requests from school-aged children and adolescents who stutter. Language, Speech, and Hearing Services in Schools, 52(2), 717-727.
  https://doi.org/10.1044/2020_LSHSS-20-00069
• Iimura, D., & Miyamoto, S. (2021). The assessment of possible cluttering in Japanese adults who stutter: Analyzing the ratio of disfluencies. Perspectives of the ASHA Special Interest Groups – Global Issues in Communication Sciences and Related Disorders, 6(5), 1273-1280.
  https://doi.org/10.1044/2021_PERSP-21-00018
• Iimura, D., Asakura, N., Sasaoka, T., Inui, T. (2020). Assessing sensorimotor integration in adults who stutter by a behavioral task using perceptual adaptation of frequency-altered auditory feedback. Acoustical Science and Technology, 41(5), 780-783.
  https://doi.org/10.1250/ast.41.780
• Iimura, D., Asakura, N., Sasaoka, T., Inui, T. (2019). Abnormal sensorimotor integration in adults who stutter: a behavioral study by adaptation of delayed auditory feedback. Frontiers in Psychology, 10, 2440.
  https://doi.org/10.3389/fpsyg.2019.02440
• Iimura, D., Yada, Y., Imaizumi, K., Takeuchi, T., Miyawaki, M., & Van Borsel, J. (2018). Public awareness and knowledge of stuttering in Japan. Journal of Communication Disorders, 72, 136-145.
  https://doi.org/10.1016/j.jcomdis.2018.02.002
• Iimura, D., Uehara, S., Yamamoto, S., Aihara, T., & Kushiro, K. (2016). Does excessive attention to speech contribute in stuttering?: A preliminary study with a reading comprehension task. Perspectives of the ASHA Special Interest Groups, 1(4), 5-15.　
  https://doi.org/10.1044/persp1.SIG4.5  

Japan Society of Stuttering and Other Fluency Disorders
Japanese Association of Communication Disorders
The Japan Society of Logopedics and Phoniatrics
Japanese Association of Speech-Language-Hearing Therapists
The Japanese Society of Hearing and Language Disorders
The Japanese Association of Special Education
The Japanese Society of Social Psychology
Japan Academy of Learning Disabilities

Member of the Working Group on Clinical Guidelines for Infant Stuttering, Japan Society of Stuttering and Other Fluency Disorders
Director, Japan Society of Stuttering and Other Fluency Disorders
Editorial Board, Journal of Communication Disorders

https://researchmap.jp/d-iimura?lang=en
https://trios.tsukuba.ac.jp/en/researcher/0000004765 (Univ. of Tsukuba Researchers Information)