The challenge of defining maturity when the brain never stops changing

(Cell Press) Neuroscientists don't know when your brain is a legal adult. While the law has to draw a line between adolescence and maturity, ranging globally from 10 to the early 20s, different parts of the brain mature at different rates, rather than growing up entirely overnight. In an Opinion published in Neuron, Harvard psychologist Leah Somerville argues that using current neuroscience tools to define when a brain 'reaches maturity' is much trickier than it may seem.

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