We investigated the relationship between the phonological and orthographic representations of new words for adult learners. Three groups of native English speakers learned a set of auditorily-presented pseudowords along with pictures indicating their “meanings”. They were later tested on their memory of the words via an auditory word—picture matching test. While all three groups of participants heard the same auditory stimuli and saw the same pictures, the groups differed with respect to the written stimuli that accompanied each item during training. Some participants were presented with written forms for the auditory labels that were consistent with English spelling conventions (e.g., spelled form , auditory form [k m d]), while others saw written forms that were not consistent with English spelling conventions (e.g., spelled form , auditory form [k m d]), and a third group of participants was presented with no written forms. Participants who saw written forms that were not consistent with English spelling conventions showed interference from the words’ spelled forms at test. This finding provides evidence for a relationship between orthographic and phonological representations for newly-learned words.

Recent research indicates that knowledge of words’ spellings can influence knowledge of the phonological forms of second language (L2) words when the first and second languages use the same orthographic symbols. It is yet unknown whether learners can make similar use of unfamiliar orthographic symbols. In this study we investigate whether native English speakers use orthographic tone marks to help them associate lexical tone with new L2 words? Native English speakers with no knowledge of Mandarin were assigned to ‘Tone Marks’ or ‘No Tone Marks’ word learning groups. During a word learning phase, they learned to associate Mandarin nonwords varying in lexical tone with orthographic forms (written in pinyin with/without tone marks) and pictured ‘meanings’. In Experiment 1, participants were asked whether a picture associated with, for example, tone 1 matched an auditory form containing tone 2. Tone Marks participants outperformed No Tone Marks participants, suggesting that the availability of unfamiliar orthographic symbols helped them associate lexical tone with the new words. In Experiment 2, the test involved matching an orthographic representation and an auditory word. Tone Marks participants performed above chance, while No Tone Marks participants did not, indicating that Tone Marks participants learned the correspondences between auditory tones and tone marks to some extent. We conclude that the presence of a novel orthographic feature (in this case, tone marks) can support native English speakers’ ability to associate a novel phonological feature (in this case, lexical tone) with newly-learned lexical items.

Second language (L2) learners must often learn to perceive and produce novel L2 phoneme contrasts. Although both research and intuition suggest that these difficulties can be overcome to some extent with exposure to the L2, it is not known what consequences this kind of learning has for the phonological structure of the L2 lexicon. We present an experiment designed to investigate the lexical representations that learners establish for L2 words that contain novel phonemic contrasts. Specifically, we consider the acquisition of Japanese consonant length contrasts by native speakers of English: Japanese contrasts consonants such as /k/ and /kk/ while English does not. The results indicate that native English speakers do not initially encode consonant length consistently in their lexical representations of Japanese words, as reflected in both listening and production tasks. However, after one year of Japanese experience, the phonological structure of their Japanese lexicon more closely approximates that of native Japanese speakers. We conclude that significant changes to the structure of the L2 lexicon can occur even within the first year of L2 learning.

We provide an exhaustive review of studies in the relatively new domain of research on the influence of orthography on second language (L2) phonological acquisition. While language teachers have long recognized the importance of written input—in addition to spoken input—on learners’ development, until this century there was very little systematic research investigating the relationship between orthography and L2 phonological acquisition. Here, we review studies of the influence of written input on L2 phonological awareness, phoneme perception, the acquisition of phonological processes and syllable structure, and the pronunciation and recognition of words. We elaborate the variables that appear to moderate written input effects: (1) whether or not a novel phonological contrast is systematically represented by the L2 writing system (systematicity); (2) whether some or all of the L2 graphemes are familiar to learners from the L1 (familiarity); (3) for familiar graphemes, whether the native language (L1) and the L2 employ the same grapheme-phoneme correspondences (congruence); and (4) the ability of learners to perceive an auditory contrast that is systematically represented in writing (perceptibility). We conclude by calling for future research on the pedagogical implications of this body of work, which has thus far received very little attention by researchers.