Every Tuesday, we open up one lesson of the Dyslexia Trainer Certification Program here on the blog, all 48 of them, one week at a time. Whether you are a teacher, a parent, or an education professional, this series shows you exactly what certified dyslexia trainers learn, and how the program works from the inside.
This week: Exploring Dyslexia: Definition, Genetics, and the Gift Within
Dyslexia has been studied for more than a century, and for decades it was misunderstood. Today, research confirms that it is a hereditary difference in how the brain processes symbols, sounds, and sensory information, passed on through the genes. This lesson traces that story and introduces the mindset behind modern dyslexia training: instead of asking what is wrong with a child, we ask how this child perceives the world and how we can support exactly that.
What this lesson is about
Understanding dyslexia begins with understanding its story, a story shaped by more than a century of research, debate, misconceptions, breakthroughs, and evolving perspectives. From the first neurological case descriptions in the late 1800s to the complex genetic studies of today, dyslexia has traveled a long path through medicine, psychology, education, and neuroscience. Each field contributed pieces of knowledge, yet no single discipline could fully explain why intelligent children struggled so profoundly with reading, writing, or spelling. As a result, dyslexia was misinterpreted for decades, labeled as a disease, an attention problem, a social issue, or even a lack of intelligence. Only slowly did a clearer picture emerge.

In recent decades, scientific progress has finally confirmed what early researchers sensed intuitively: that dyslexia is a hereditary difference in how the brain processes symbols, sounds, and sensory information. This understanding marks a powerful shift away from the deficit-based view of the past and toward an educational, perceptual, and student-centered approach. Instead of asking “What is wrong with the child?” we ask, “How does this child perceive the world, and how can we support that?” This mindset is at the heart of modern dyslexia training.

For certified dyslexia trainers, this historical and scientific foundation matters deeply. You will meet parents who are confused by conflicting information, educators who still view dyslexia through outdated lenses, and children who blame themselves for challenges they never caused. By understanding where our knowledge comes from, what science now confirms, and why misconceptions still persist, you can guide families with clarity, confidence, and compassion. This lesson equips you with the grounding you need to speak about dyslexia not merely as a condition, but as a perceptual learning difference, one that requires understanding, respect, and targeted support.

What you will learn in Lesson 2
- How more than a century of research shaped what we know about dyslexia
- What genetics tells us: heredity, chromosomes, and information processing
- Why the deficit-based view is outdated, and what replaces it
- The strengths-based mindset behind modern dyslexia training
About the Dyslexia Trainer Certification Program
Since 1997, more than 17,000 dyslexia trainers in 64 countries have been certified. The certification gives you more than knowledge: all the tools you need to actually work with dyslexic children are included as well. Worksheets, training programs, assessment materials, everything ready to use in your practice. You get the whole package.
The program is accredited by the American Dyslexia Association (ADA) and follows the training standards of the International Federation of Dyslexia and Dyscalculia Associations (IFDDA).
Catch up and start free
Lesson 1 is free for everyone. Register in a minute and see the program from the inside: dyslexiacertificate.com
You can find all published lessons of this series under the tag Lesson Series.













