Date of Award
Master of Arts
Wendy S. Francis
Prior research has shown that repetition facilitates speech recognition in difficult listening environments, as indicated by more accurate reporting and lower subjective noise ratings. Both effects were found even when sentences were read at encoding, suggesting that the top-down processing involved comes from a modality-general level of representation (Gleason & Francis, 2021). We investigated whether this top-down processing comes from the semantic or lemma level of language representation. Bilingual participants listened to sentences in English and Spanish. At test, these sentences and new sentences were presented auditorily in English with background noise. After listening to each sentence, participants reported the final word and rated the noise level. In the English encoding condition, results replicated previous priming effects in repetition accuracy and noise ratings. However, these repetition effects did not transfer across language conditions, which suggests that the top-down processing originates at the lemma level and not the semantic level.
Received from ProQuest
Gleason, Liam, "Sources of Top-Down Processing in Recognition of Repeated Speech in Noise" (2022). Open Access Theses & Dissertations. 3680.