Third International Conference on Spoken Language Processing (ICSLP 94)
Lexical involvement in tasks which require phonetic decisions depends upon attentional factors. Attention can be manipulated by varying task demands. Tasks such as phonetic categorization may focus attention on acoustic-phonetic information but tasks such as rhyme decision may encourage use of the lexicon. An experiment is presented in which listeners made rhyme decisions about words and nonwords ending in ambiguous fricatives. Lexical effects were found, even though the materials had previously been used in a categorization experiment where no reliable effects were observed. The results suggest that the demands of the rhyme task do encourage lexical involvement. Attentional shifts due to task demands are more readily accounted for by autonomous than by interactive models of spoken word recognition.
Bibliographic reference. McQueen, James M. (1994): "Do ambiguous fricatives rhyme? lexical involvement in phonetic decision-making depends on task demands", In ICSLP-1994, 1139-1142.