Links between perception and production were investigated for two adult native speakers of Korean who participated in electropalatographic (EPG) treatment designed to teach phonological and articulatory contrasts between English /s/ - /[esh]/, /z/ - /[voiced palato-alveolar affricate]/, and /l/ - /[alveolar approximant]/. Participants were successful in learning to produce the English contrasts. Perception of English consonants was tested pre- and post-treatment. Post-treatment perception improved somewhat for treated consonants but not for untreated consonants, although perception was not directly trained. (Contains 4 tables and 5 figures.)