There’s an unpredictable neural trickster living inside each of us, taking up residence in the dendrites and synapses that weave their way through the right side of our brain. It’s been living there since before we were transformed from embryos into fetuses – between weeks seven and eight in utero. By then, great learning has already begun and the primary driver of learning and brain development turns out to be … sound! (One reason hearing is one of the first senses to develop and the last to leave us?). Especially powerful is the sound of mother’s voice, which we begin paying close attention to during this important time. The growth that begins unfolding, driven powerfully by mother’s voice initially, almost immediately begins making a preponderance of connections on the right side of our brain.

Many months later, as we begin to acquire language, this lopsided neural development and…