In Reader, Come Home, Maryanne Wolf explores the impact of digital media on the reading brain via a neuroscientific approach. Modern neuroscience confirms that literacy is a cultural invention, not a biological inheritance. The brain learns to read by repurposing existing neural networks in a process French cognitive neuroscientist Stanislas Dehaene calls “neuronal recycling.” According to Dehaene and Laurent Cohen, “cultural inventions invade evolutionarily older brain circuits and inherit many of their structural constraints” (Dehaene, Stanislas, and Laurent Cohen. “Cultural Recycling of Cortical Maps.” Neuron, 25 Oct. 2007). This process indicates that brains conditioned to consume information solely via digital media may lose the ability to process print media. 

Wolf grounds her analysis in this concept, asserting that “human beings were never born to read” and that neuroplasticity allows a novel reading circuit to emerge (1). According to Harvard Medical School literature, “a number of brain regions are involved in reading and comprehension,” including the temporal lobe, the Broca’s area, and the angular and supramarginal gyrus; and cohesion between these areas is essential to developing reading skills (Edwards, Scott. “Reading and the Brain.” Harvard Medical School, 2016). Stanford neuroscientists also report “that reading ability in young children is related to the growth of the brain’s white matter tracts” (Edwards). Strong signals between the brain’s tracts are essential to developing strong reading skills. Wolf leans on such data to argue that brain development might be interrupted by premature introduction of digital media in young children. 

Developing brain circuitry and a smooth channel of information from the back to the front of the brain depends on experience; repeated exposure builds automaticity, while different writing systems—such as character-based scripts versus alphabetic ones—place distinct demands on its components. Wolf contends that the brain’s malleability is precisely why pedagogy matters. Explicit instruction strengthens foundational visual-phonological connections, creating a robust base for the deep-reading processes of inference and analysis. This framework underpins her argument for a biliterate pathway, where print-based learning first builds the core circuit before digital tools are used to reinforce specific skills.