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2018 World Congress

Welcome to the 2018 Joint World Congress

One World, Many Voices: Science and Community is the Inaugural Joint World Congress of the International Cluttering Association (ICA), International Fluency Association (IFA) and International Stuttering Association (ISA), with local host organizations the Japan Society of Stuttering and Other Fluency Disorders and the Japanese Stuttering Genyukai Organization. This event will be held in Hiroshima, Japan, from the 13th to the 16th of July, 2018.

This exciting new collaboration between the three international organizations, and their Japanese hosts, aims to create an event that will allow everyone – people who stutter and clutter, their families and friends, clinicians, and researchers - to feel welcome, included and valued.

The Inaugural Joint World Congress will be a ground-breaking initiative where historically diverse groups are cooperating effectively to explore experiences of, feelings about, and attitudes towards stuttering and cluttering. We want people who stutter or clutter to feel safe and surrounded by friends. We want those who work clinically to have opportunities to share and update their skills. We want to give researchers an opportunity to present high-quality research in a stimulating environment, while simultaneously giving those who explore innovative and new approaches to living with stuttering and cluttering a chance to share their experiences and ideas.

The benefit of this cooperation will be entirely mutual and shared by people who stutter, people who clutter, clinicians, and researchers.

Please join us in Hiroshima, 13th to 16th of July, 2018!



Delegate fees will be published on the website as soon as they have been finalized. It is likely that there will be a number of bursaries available to facilitate congress attendance. Please see below for more information. 

Application has been made to support student and junior faculty World Congress travel and accommodation to the US National Institute on Deafness and Other Communication Disorders (NIDCD). Its recent review was very favorable. Although no firm commitments can be made until NIDCD Council meets in late January 2018, we are optimistic, given its very positive review score,  that a bursary to support student and junior faculty attendance at the World Congress will be made available in early spring. This award would also sponsor a separate series of educational seminars) to aid younger researchers in grant preparation and manuscript publication. Once funding is confirmed, applications for travel support will be made available and review will occur quickly to ensure best support for junior researcher attendance at the World Congress. Awardees will also be granted a waiver of the congress registration fee.

The International Fluency Association (IFA) is also offering its members who are in financial need the opportunity to apply for bursaries to assist with the costs of congress registration and travel. The IFA bursary scheme will be open for applications from full IFA members, who have had a presentation accepted for inclusion in the congress programme, and who are planning to attend the four days of the congress. Further details of the application and review process will be made available in due course.

The other organisations involved in the collaboration are currently considering the possibility of offering similar schemes for their members. Information will be published on the congress website as it becomes available.


Registration is coming soon! The registration system will open at the end of February. Thank you for your patience.


Information regarding delegate fees will soon be published on this page.




In preparation for the 2018 World Congress the IFA is implementing Japanese translations of some pages on the site. Choosing Japanese below to see these translations.

Not all pages are translated, but you can use Google translate to see a machine translation using the switch below

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