Lost first languages leave impressions in the brain

Credit Scott Sherrill-Mix, flickr. Used under Creative Commons.

Like a footprint in wet concrete, the first language a baby hears makes an impression that lasts for years, regardless of what follows. Later, children even as old as ten who are adopted or immigrate can completely forget their first language. But even if they do not consciously remember their mother tongue, their brains retain its traces, according to a study published this week in PNAS, led by Lara Pierce of McGill University.

Read the full article in Scope.