A recent study by the University of São Paulo shows that adults with formal reading education engage a distinct right-side brain region when processing unfamiliar spoken sounds, a phenomenon not seen in functionally illiterate adults.
- Formal reading education activates a specific right brain region for sound processing.
- Functionally illiterate adults show reduced ability to detect unfamiliar spoken sequences.
- Reading trains phonological awareness essential for analyzing sounds without meaning.
What happened
Researchers at the University of São Paulo conducted a study involving three groups of adults: highly educated young adults, highly educated older adults, and functionally illiterate older adults. Participants completed listening tasks where they identified target words in their native language and in an unfamiliar language. Brain scans revealed that those with reading education activated the right inferior frontal gyrus during the unfamiliar language task, unlike the functionally illiterate group.
Performance differences were clear. While all groups performed similarly when listening in their native language, their ability to catch target sounds in Japanese—a language no participant spoke—varied widely. The most educated young adults spotted about 75% of targets, older educated adults 48%, and functionally illiterate adults only 17%. This demonstrated a strong link between reading proficiency and the capacity to process unfamiliar sounds.
Why it feels good
Learning to read equips individuals with phonological awareness, the skill to break down and consciously manipulate the sounds that make up language. This ability goes beyond everyday speaking and lends an additional, purposeful layer to processing spoken language, especially when the meaning is unknown.
The study suggests that reading instruction trains the brain to engage a specific right-side region that helps analyze unfamiliar sounds more deeply. This finding highlights the positive, brain-building impact of literacy, showing that reading education enhances auditory skills and cognitive flexibility in ways natural language use alone does not.
What to enjoy or watch next
For anyone interested in brain science or literacy education, this study opens exciting avenues for exploring how targeted learning experiences reshape brain function. Future research might examine literacy’s effects in different languages or among children learning to read, to deepen understanding of neural development.
Meanwhile, educators and lifelong learners can take inspiration from these findings to appreciate how reading not only brings the joy of stories but also cultivates unique cognitive tools that enhance how we perceive and understand the world through sound.