Board of Directors

Anja Herde (Germany) – Chair

Anja was elected to the ISA Board in 2013 and continues to serve on the board as Chair from 2019.

Currently I am the spokes person of the ISA-Team of the German Stuttering Association called BVSS (Bundesvereinigung Stottern und Selbsthilfe e.V.). I studied business administration at an university of Berlin and specialized in human resources and Corporate Social Responsibility. Furthermore I took my trainer degree and my master in democratic school development as I wanted to work more in the field of education in the non profit sector. Now I am working as a project leader for an educational organisation in Berlin.

I started stammering with the age of 4. From both parent sights I got the “gift” of stammering – my father himself and my mothers two brothers. Although stammering was not unusual in my family it was hard for me dealing with it in my private life because when I spoke to family members it was worse than everywhere else and the understanding was not so high as I wished for. With my friends or in school I had no dramatic complications as I could hide my stammering really well. Except with reading and doing speeches in school – here it was difficult to change the words. So after 1-2 group therapies as a child which did not help at all I started to surge again for possibilities to change my stammering when I started my studies – I thought: Now I could not escape from stammering anymore. In 2004 a speech therapist recommended me the self-help group in Berlin and so I started to be active in the self-help right away. Since than I played open cards with my stammer, made great experience, started to gain self confidence in doing speeches etc. although my stammer did not disappear and I got new great friends, which I do not want to miss in my life anymore. I have been the chair of the Berlin self-help organization, organised the German congress for people how stammer and got involved in different projects of the BVSS. All in all I am really thankful for the self-help organizations around the world which work on raising the awareness of people who stammer. I decided to step into the work of the International Stuttering Association to support this great movement and I would like to make my contribution to that.

Arni Birgisson (Iceland) – Treasurer

Arni was elected to the ISA Board in 2018 and continues on the board from 2019 as Treasurer.

Arni lives in Iceland and has been board member of Málbjörg, the Icelandic Stuttering Association since 1999. Both as regular Board member, Treasurer and Chairman.  He is also the Congress Convenor for the 13th ISA World Congress in Iceland 2019.

He has stuttered since childhood and is really grateful for the stuttering community he is involved in.  Since 1999 he has attended over 20 international stuttering related conferences and congresses.

Arni has BSc degree in Business Administration and MSc degree in Finance and has been working in the Financial Industry for last 10 years.  He is married and has two daughters.

Sybren Bouwsma (The Netherlands)

Sybren was elected to the ISA Board in 2019.

Born and raised in the Netherlands, but with a worldwide interest. I have been stuttering since I started to speak. I am grateful for the opportunity to serve the Stuttering Community (and the General public!) as a member of the Board of Directors of the International Stuttering Association (ISA) on behalf of the Dutch Stuttering Association ‘Demosthenes’. I have been an active member of ‘Demosthenes’ since 2001 in different positions: Vice-president, editor of the national magazine for people who stutter, initiator of a working group for young people who stutter, member of a regional self-help group, and  currently I organize different workshops and weekends.

I have attended several ELSA-youth meetings, and was present at several world conferences (Croatia (2007), Argentina (2011), The Netherlands (2013), Iceland (2019). Since 2015 I organize European Youth Exchanges for Young People who stutter. supported by a grant from Erasmus+. I am currently also involved in a European project on creating a manuals related to (dealing with) stuttering for teachers, trainers and others who work with young people (the same project as  Sigríður is involved in).

I have a background in Public Administration and Ethics and have worked in Social Research for more then 10 years. In 2016 I graduated as Outdoor Life Coach and have my own organisation Orange Raven. I work as a nature and online coach and stutter whisperer and give workshops on topics related to (building up) self-esteem, social contacts and non-judgmental listening.

Rodney Gabel (USA)

Rodney was elected to the ISA Board in 2019.

I am really thankful to be serving on the Board of Directors for the International Stuttering Association, on behalf of the National Stuttering Association. I am a professional who has worked to better the experience of people who stutter and their families for the past 25 years. I have been a person who stutters for over 45 years. My first experience with the stuttering community was in 1990 when I joined the National Stuttering Project (now the National Stuttering Association). Since the mid-1990s, have been involved in chapter leadership and service to the National Stuttering Association in the USA. Currently, I am the chapter leader of the Toledo, Ohio (USA) chapter. I am also married and the father of two girls. I come from a lineage of people who stutter.

I am a Speech-Language Pathologist and Board-Certified Specialist in Fluency Disorders. I am also Professor at the University of Toledo, where I teach courses in stuttering, conduct research, and I am an active presenter at national and international conferences. I also operate The Gabel Center for Stuttering Therapy, a clinic in the Toledo Area. I also deliver educational programs for Speech-Language Pathologists through my clinic.

Dina Lilian (South Africa)

Dina was elected to the ISA Board in 2019.

Dina qualified as a Speech Therapist and Audiologist at the University of the Witwatersrand in Johannesburg, South Africa and subsequently completed a Masters Degree. She re-established Speakeasy, the Self Help Group for People Who Stutter, in 2001. She is also the South African representative for the ISA (International Stuttering Association), ICA (International Cluttering Association) and IFA (International Fluency Association). 

Dina has stuttered since childhood and attended therapy with numerous Speech Therapists until she was able to manage her stutter. Thanks to her experience with stuttering and subsequent career as a Speech Therapist, she has been fortunate to attend and been invited to speak at numerous international / national conferences and workshops. Dina also contributes to radio shows on the topic of fluency and has written a number of  articles on the topic of stuttering. She works part-time at the University of the Witwatersrand and also has a Private Practice.

Doug Scott (USA)

Doug was elected to the ISA Board in 2019.

Born and reared in Houston, Texas USA.  I am grateful for the opportunity to continue serving the Stuttering Community as a member of the Board of Directors of the International Stuttering Association (ISA) on behalf of the National Stuttering Association (NSA).

Currently, I am one of the hosts of Stutter Social, a global online video chat forum for people who stutter.   In 1985, I was a part of a small group of people in Houston who formed a stuttering self-help support group which later became affiliated with NSP/NSA.  I have been involved in the stuttering community for 34 years as NSA Chapter leader, NSA conventions coordinator, and currently NSA First Timers Ambassador.

I am married and father to two sons ages 27 and 25.   A graduate of The University of Texas at Austin with a BBA degree in Business/Engineering Management.  Employed for nearly 30 years at Vallourec and Mannesmann Corp., a french and german owned global pipe and steel company,  working in Information Technology and General Accounting, as a Systems Administrator, and Accounts Receivable Associate.

I began stuttering at age 7 and quickly advanced to a moderate/severe stutterer.  My mother was very supportive of me as she had a brother who was a very severe stutterer and her mother, my grandmother,  was a mild stutterer.   Stuttering had a profound and controlling hold on my life until 1988 when I entered Precision Fluency Shaping Program therapy.  PFSP along with my involvement with the NSA enabled me to accept and manage my stutter and live my best life as an adult.  My major focus and passion is to help primarily adults who stutter become who they want to be and live their best life!

Dieudonne Nsabimana (Rwanda)

Dieudonne was elected to the ISA Board in 2019.
He can be contacted on

I am thankful and honored to serve on the ISA Board of Directors. I am Rwandan and am chair of an umbrella organization of people who stutter in Rwanda. And a person who stutters. I am also the Founder & Coordinator of the African Stuttering Centre a non-profit organization based in Rwanda to help people who stutter.