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Audiovisual Speech Processing: Implications For Speech Perception And Language Development, Ryan Andrew Cannistraci Aug 2021

Audiovisual Speech Processing: Implications For Speech Perception And Language Development, Ryan Andrew Cannistraci

Doctoral Dissertations

This dissertation aims to empirically assess the complex, multileveled relationships between audiovisual speech perception and early language development. The majority of extant language development research has justifiably focused on infants’ ability to learn language from auditory input, and indeed, infants are precocious auditory learners (Saffran & Kirkham, 2018). Complementary to auditory speech, however, are the necessarily redundant facial movements used to articulate speech. Outside of language development research, multimodal processing has been theorized to facilitate perceptual learning and cognitive development (Bahrick & Lickliter, 2000), but only a small number of empirical studies have investigated how audiovisual speech perception in infancy …


Testing The Common-Mechanisms Theory Of False Hearing And False Memory: The Roles Of Executive Functioning And Inhibitory Control, Eric Failes Jan 2021

Testing The Common-Mechanisms Theory Of False Hearing And False Memory: The Roles Of Executive Functioning And Inhibitory Control, Eric Failes

Arts & Sciences Electronic Theses and Dissertations

Recent studies have shown that older adults are more susceptible to context-based misperceptions in hearing than are younger adults, a phenomenon that has been referred to as false hearing (Rogers et al., 2012; Sommers et al., 2015). The authors of these studies have noted similarities between false hearing and false memories (Jacoby et al., 2005), suggesting that the two phenomena may arise from similar cognitive mechanisms. The present dissertation project investigated similarities between false hearing and false memories. In Experiment 1, I directly compared susceptibility to false hearing and false memories in younger and older adults. I then investigated two …