Toddlers' speech perception

I was interviewed by ABC Science online yesterday about an interesting new study that has examined adults, 2- and 4-year-olds' abilities to change their vowel productions based on how they perceived their own speech output. The participants were asked to say "bed"; however, their speech was manipulated so that they heard themselves saying "bad". The adults and 4-year-olds changed their articulation of the vowel in accordance with the feedback, the 2-year-olds did not. More details are here