Could a Biological Marker Indicate that You Will be Dyslexic?

by Rich on March 1, 2013 · 1 comment

Imagine that you pick up a book to read it, but yet you can’t get very far because the letters are jumping around or are blurry. This is what many children experience once they start reading to learn in school. While the National Institutes of Health estimates that nearly 15% of the population is dyslexic, is there a way to know if that number will grow?

Recently an article was published on, about research being done at Northwestern University to determine if there is a biological marker that tells us if a child is struggling with reading comprehension. Are the findings at this point enough to give us a yes?

What Scientific Research is Telling Us About the Biological Link

Scientific research indicates that the biology of individuals is linked to the development of dyslexia. While the research is being done to unravel the mystery of a “cause for dyslexia”, the biological process hasn’t been fully understood. Albeit there is a biological marker that could indicate that an individual is struggling with reading comprehension, the study hasn’t put all the pieces of the puzzle together yet.

What the researchers have uncovered, is that the biological causes may not actually be directly related. The stunning part is that these researchers believe that the link is trouble with hearing. Nina Kraus, the head author of the research discusses how learning to read is partly auditory. While this is true, it has never been a consideration regarding dyslexia.

Some of the reasoning for this link is related to:

  1. Associating letters on the page with their meaning
  2. Auditory representation of the sounds
  3. How the corresponding letters on the page should sound

The study that was done included a group of 100 school-aged children with various levels of reading ability to be fair. While reading, the children to wear electrodes so that brain waves could be measured as they listened to speech sounds as well as encoded these sounds. The key to how this study is being done?

It’s simply a matter of watching how the nervous system responds to sound. When the brain responds to sound it produces electricity. This means that the electricity is what can be measured and therefore is what tells us what is really happening. Sound waves are transmitted quickly, so the information changes more rapidly than you can imagine.

The study did show that those children that struggled to read had the poorest transmission of sound waves and processing the encoding. This study is interesting, simply because it raises a point that doesn’t typically come up with dyslexia.

If you would like to read the full article and learn more about this study, you can go here to check it out:


{ 1 comment… read it below or add one }

William October 5, 2017 at 1:21 pm

Thank you very much for sharing the information. It really gives me food for thought.


Cancel reply

Leave a Comment

Previous post: