Human brain development is shaped by early experience, particularly during sensitive periods. Language exposure plays a central role in neural wiring, executive control, memory, and long-term cognitive outcomes. However, literacy is typically introduced at school age, after key developmental windows have begun to decline. Despite extensive research on early language exposure and later literacy, literacy acquisition beginning at the onset of speech (~2 years) has not been directly examined. We propose that literacy timing may influence neurocognitive development. Integrating findings across neuroscience, bilingualism, neuroepigenetics, and related fields, we introduce the T–W–C–M–A framework (Timing, Wiring, Control, Memory, Amplifier). This model describes how early symbolic exposure may align with sensitive periods, strengthen neural circuits, enhance executive control, stabilize memory, and produce cumulative developmental amplification. This work advances a testable framework for examining how literacy timing may shape cognitive development.
Zvi Almog (2026) studied this question.