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Thomas Brown Obituary

Dr. Thomas E. Brown, Ph.D. (1942-2025) passed away at home on August 18, 2025, at the age of 83. Born in Minneapolis on June 25, 1942, Tom graduated from Knox College in 1964, earned a Master of Divinity from Yale Divinity School in 1968, and a Ph.D. in Clinical Psychology from Yale University in 1976.
A pioneering voice in understanding Attention-Deficit/Hyperactivity Disorder (ADHD), Dr. Brown helped reframe it as a disorder of executive function. He created the widely used Brown Executive Function/Attention Scales and authored seven influential books, including Smart but Stuck and A New Understanding of ADHD, which continue to guide patients, families, and professionals worldwide.
Tom married "Bobbie" Brown in 1967. They raised their children, Liza and David, in Hamden, Connecticut, where Tom served as consulting psychologist at Hamden Hall Country Day School and later taught for decades at Yale, including as Associate Director of the Yale Clinic for Attention. In 2017, after Bobbie's passing, he moved to Los Angeles to be near family and founded the Brown Clinic for ADHD in Manhattan Beach with his colleague Ryan Kennedy.
A gifted speaker, Tom lectured in more than 50 countries. His 28-minute video for Understood.org, viewed over 11 million times, made complex science accessible to millions. He published over 30 peer-reviewed articles, was an elected Fellow of the American Psychological Association, received Knox College's Distinguished Alumni Award, and in 2024 was honored with CHADD's Lifetime Achievement Award.
Dr. Brown is survived by his daughter, Elizabeth "Liza" Somilleda, and her husband, Abel, of Hawthorne, California; his son, David Brown, and his wife, Jen, of Hancock Park, California; his beloved sister, Nancy Gebhard, of Centennial, Colorado; and his grandchildren, Noah and Simone Somilleda, and Ford Brown-born June 25, 2025, on Tom's 83rd birthday.
In tribute, CHADD, the nation's leading nonprofit for ADHD, has renamed its Young Scientist Award the Dr. Thomas E. Brown Pioneer Award. Donations in his memory may be made to CHADD (https://chadd.org/honoring-thomas-e-brown-phd/).
Published by The New Zealand Herald on Sep. 16, 2025.

Memories and Condolences
for Thomas Brown

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Jen Brown

October 14, 2025

Tom was an amazing man - a truly kind, empathetic person, who strived to make the world a better place. And he did. He will be sorely missed.

Robert M Halkitis

October 13, 2025

Please accept my sincere condolences. As a special education teacher and someone diagnosed with ADHD in adulthood, I have followed and cited Dr. Brown´s work. His clarity and compassion shaped my classroom and gave me hope. I´m deeply grateful for his legacy.

Elizabeth Brosnan

October 12, 2025

I heard today thought the article in the WSJ that Dr. Thomas Brown had passed away over a month ago. I was so sad to hear that. I had found Dr. Brown through doing a lot of research research on ADHD and I made an appointment for my son to meet w him. My son was not able to meet w him so I met w him knowing that I struggled as well w symptoms of ADHD and we met while he was practicing in California. I recall sending the ADHD 28 min primed so many people that felt they or a love one struggled. I would say to them this will change your life. He explained it all so well. It is w Dr. Brown that I learned about the Neurons being boosted and how ADHD medication works. Thank you God for Dr. Brown. He diagnosed me w ADHD so I was able to get the help I needed. Elizabeth

Dana Steinham

October 9, 2025

Dr. Brown has been an immense influence in my life - first, when I was seeking to understand my own ADHD, and then later, when I decided to become a therapist helping others with ADHD. I have loaned his book to more people than I can recall, and the response is unanimous: his perspective is eye-opening, mind-expanding, and for people with / close to others who have ADHD, life-changing. I am so sad to hear Dr. Brown passed before I could meet him and shake his hand. I will try my lifelong best to honor his legacy in my own work.

David Brown

September 29, 2025

Maryam Koshak

September 23, 2025

thank you for helping me understand who i am. i was honored to be diagnosed by this legend a few years back! i will never forget how supportive and understanding he was. may his great soul rest in peace. i will always keep him in my prayers.

Tanguy BODIN-HULLIN

September 22, 2025

Parmi ses travaux, Thomas Brown a écrit un livre de grande qualité pour les professionnels du TDAH, ce livre a été traduit en français (par Marc-Antoine Crocq et Alexis Boehrer) et il m'a été d'une très grande utilité pour comprendre en détail l'impact du dysfonctionnement exécutif dans le TDAH.
Je suis triste aujourd'hui et regrette la disparition de cet homme qui était pour moi une référence, un grand chercheur qui par son travail a permis d'améliorer la connaissance de ce trouble complexe qu'est le TDAH, et ainsi d'aider nombre de personnes à obtenir un bon diagnostic et une aide plus appropriée.

Manoj, Dublin, Ireland

September 21, 2025

I never met you. But I will recognise your voice from the numerous podcasts you made! You helped me widen my knowledge of ADHD. For this I am eternally grateful to you and through me my patients as well. May you rest in peace and know that there is a whole world of people that you have touched. Thank you.

Dee

September 21, 2025

I was fortunate to meet and hear Dr Brown talk a couple times. I was very sad to learn of his passing. May He Rest In Peace. He will now live on through so many who knew him and knew of him through his writing, as well as theough the memories and stories his family has of him. Thank you Dr Brown for your dedication and Love for so many

Hayley

September 20, 2025

Sad news to hear of Dr Browns passing. I had the pleasure of speaking to him in 2023 and this helped me immensely. A kind and knowledgeable man. Condolences to his family, friends and colleagues. Rest in Peace.

Laurie kassel

September 18, 2025

Very sad news. I met Dr. Brown and was very impressed with him. Dr. Brown had a wealth of knowledge regarding ADD/ADHD. Most importantly I noticed his excellent ability to communicate with anyone. Very kind and thoughtful man.

Tanya Keto

September 18, 2025

Dr. Brown, thank you for your contributions to understanding myself and my child as an ADHD´er, and for the role you played in guiding my career so I can do the same for other parents and children. You have left an indelible mark on the world, and we cherish you for it.

Pia B. Flores

September 18, 2025

Had the opportunity to listen to his talks through CHADD. It was very enlightening. Thank you for all the things that you did specially for us parents with children in a spectrum.

Kenneth Horvatic

September 18, 2025

My love to all who loved Dr Brown with me. He helped me so much as a doctor. And I was just trying to call him to give him some new insight. It´s disappointing that I am too late and yet it´s a wonderful miracle that I got here at all. Thank you, Dr. Brown.

Single Memorial Tree

The Cawthon Family

Planted Trees

Debra Ann Afarian

September 17, 2025

I was blessed to have been introduced to Dr. Tom Brown when he moved here to the West Coast. He was so generous with his time and knowledge driving from LA to Orange County a number of times to speak to our community on Adult ADHD, he made a profound impact on me. I learned so much from him. My prayers for his family. His legacy will live on. May he rest in eternal peace.

Bridget

September 16, 2025

Two years ago, Dr. Brown provided me critical diagnoses and answers after other professionals in the field dismissed my concerns. His work, care, and diligence saved my life, and I will forever remember him and be grateful to him.

Alexander Diers

September 16, 2025

May his family find comfort in many beatiful memories.

Karen myers

September 15, 2025

Liza and David
What a loving memorial to your dad. He was so accomplished in so many areas. I will always cherish the summers he spent with us in Washington. I love the organization you chose for donations. Being an elementary teacher for 33 years I wish I had read some of his books. Sending you our love and are keeping you both in our thought.

Michael Willers

September 15, 2025

I knew Tom as a neighbor and friend in Hamden, Connecticut, and as a pediatrician and I knew him as a premier clinician in ADHD. He´ll be greatly missed by innumerable people, for his kindness, intelligence, dedication, and just being all-around an excellent human being.

Robert Schroeder

September 15, 2025

Linae and I have lost a true and valued friend, a friend not only to us but to the greater Hamden Hall community. One cannot overstate his contributions to our school- to our faculty, to our students and to the administration- and much of it was done quietly and without fanfare .
I was fortunate to bear witness to this wise and wonderful man, and his legacy survives in countless young men and women that he counseled. We were lucky to have known him .

Jean Webb

September 15, 2025

I was glad to have been a student of Tom Brown in pastoral counseling at Yale Divinity School in the late 70s. He made a short, but profound impact on me. My prayers for his family. May he rest in peace.

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Memorial Events
for Thomas Brown

To offer your sympathy during this difficult time, you can now have memorial trees planted in a National Forest in memory of your loved one.