⭐⭐⭐⭐⭐ “Like reading a diary of my parenting life.”


The PDA Effect — Ethan Knight

A first-person story about growing up with PDA

Written by Ethan Knight at 18, The PDA Effect shares his experiences of growing up with PDA — from education and everyday demands to friendships, communication and becoming more independent.

A personal account. Ethan’s experiences. His words.

 

Ethan didn't learn to read until he was ten years old. At eighteen, he published his first book. 

Amazon UK & Australia #1 Bestseller

Edición en español

The PDA Effect

The PDA Effect is Ethan Knight's first-person account of growing up with Pathological Demand Avoidance (PDA).

Drawing on his own experiences, Ethan writes about everyday demands, education, communication, friendships, decision-making and finding ways to communicate what he needs. 


This is a personal account based on Ethan's lived experience, not medical or clinical advice. 

Inside THE BOOK

  • Experiences of growing up with PDA
  • Ethan's experiences of communication, decision-making and friendships 
  • Everyday experiences of navigating demands and expectations 
  • Finding ways to communicate what he needs 
  • Reflections on becoming more independent

Who Might Enjoy This Book

  •  Parents and carers who want to understand PDA through a young person's experience 
  • Teachers and SENCOs interested in Ethan's first-person perspective 
  • Autistic teens and adults who recognise parts of their own experience 
  • Friends, relatives and family members wanting to better understand PDA

Editions 

  • Notes pages after each chapter 
  • Standard paperback 
  • Large-print paperback 
  • eBook 
  • Bundle options with The Secrets of My Spectrum

Why Readers Connect With It

  •  Written by Ethan from his own experience 
  • Honest, personal and easy to read 
  • Real stories rather than clinical terminology 
  • A perspective on PDA from someone who lives with it 
  • Helps readers see everyday experiences from Ethan's point of view

⭐⭐⭐⭐⭐

"Great insights about living with PDA and ways to help"

Loved this book, easy to read and so much I could relate to in terms of how I think our PDAer experiences life. I highly recommend this and think it would be great for anyone trying to understand themselves or the PDA profile - the writing is clear and not too wordy, meaning it could be good for younger tweens and teens, and for siblings of PDAers.

Steph Curtis  (Author of PDA in the Family)

 

⭐⭐⭐⭐⭐

"A Masterclass"

 Brian, Autism Support Community 

eBook 

£4.95 

  • Instant delivery via BookFunnel. 
  • Read on any device. 
  • No subscription required. 

All profits go to the author.


Bundle deals available when you add more books to cart.

Signed Paperback 

£8.95

Bundle deals available when you add more books to cart.

 All profits go to the author 


Ships from the UK

Signed Large Print 

£9.95

 Ideal for readers who prefer larger, clearer text. 

 All profits go to the author 


Bundle deals available when you add more books to cart.


Ships from the UK

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 Written by Ethan's older brother, Callum Knight, at just 16 years old, this Amazon #1 bestseller is a memoir of growing up with a different way of seeing the world. 

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Kids Books

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Book details

The PDA Effect

ISBN (Paperback):   978-1917514170 

Page count: 113  

Publication date: May 2025


 This book is available at the British Library