The study of perceptual learning as

The study of perceptual learning as phonetic retuning began with two seminal articles, both published in 2003 The two articles took different approaches but came to the same conclusion: Contextual knowledge (specifically, lexical information in Norris et al., 2003, and visual information in Bertelson et al., 2003) guides perceptual learning. We will examine studies based on Norris et al.’s lexical manipulation first, followed by studies based on Bertelson et al.’s audiovisual approach.