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Full-Text Articles in Psychology
Characterizing The Relationship Between Accented Speech Intelligibility And Listening Effort, Mel Mallard
Characterizing The Relationship Between Accented Speech Intelligibility And Listening Effort, Mel Mallard
Arts & Sciences Electronic Theses and Dissertations
Unfamiliar accents can make speech communication difficult, both by reducing speech intelligibility and by increasing the effort listeners must put forth to understand speech. However, these two constructs, while related, are independent: for example, two 100% intelligible utterances may require different amounts of effort to accurately process. To better characterize the relationship between intelligibility and effort, this study presents speakers of four intelligibility levels (one natively-accented English speaker, and three Mandarin-accented English speakers) within a dual-task paradigm (featuring a vibrotactile secondary task) to measure listening effort. We found a negative nonlinear relationship between intelligibility and effort, with the steepest slope …
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 …
Investigating The Relationship Between Gaze Behavior And Audiovisual Benefit Across Various Speech-To-Noise Ratios, Lauren Gaunt
Investigating The Relationship Between Gaze Behavior And Audiovisual Benefit Across Various Speech-To-Noise Ratios, Lauren Gaunt
Arts & Sciences Electronic Theses and Dissertations
Speech perception improves when listeners are able to see as well as hear a talker, compared to listening alone. This phenomenon is commonly referred to as audiovisual (AV) benefit (Sommers et al., 2005). According to the Principle of Inverse Effectiveness (PoIE), the benefit of multimodal (e.g. audiovisual) input should increase as unimodal (e.g. auditory-only) stimulus clarity decreases. However, recent findings contradict the PoIE, indicating that it should be reassessed. One method for investigating the factors that contribute to AV speech benefit is to examine listeners’ gaze behavior with eye tracking. The present study compared young adults’ (N=50) gaze …
Task-Evoked Pupillary Response For Completely Intelligible Accented Speech, Drew Mclaughlin
Task-Evoked Pupillary Response For Completely Intelligible Accented Speech, Drew Mclaughlin
Arts & Sciences Electronic Theses and Dissertations
Speech perception under adverse conditions, such as those caused by noise in the environment or a speaker’s accent, can be cognitively demanding. For second language- (L2-) accented speech, mismatches between the speech patterns of an L2-accented speaker and a listener can result in poorer understanding and reduced intelligibility (i.e., fewer words in the speech stream can be correctly identified). However, it remains unclear whether completely intelligible L2-accented speech imposes greater cognitive load (defined here as the degree to which cognitive resources are recruited at a given moment to meet processing demands) than native speech. In the current study, we used …
Through The Ear, To The Brain: How Cognitive Aging Impacts Veridical And False Hearing In The Presence Of Misleading Context, Eric Failes
Arts & Sciences Electronic Theses and Dissertations
A consistent finding in the literature (Benichov, Cox, Tun, & Wingfield, 2012; Dubno, Ahlstrom, & Horwitz, 2000; Hutchinson, 1989; Nittrouer & Boothroyd, 1990; Pichora-Fuller, Schneider & Daneman, 1995; Rogers, Jacoby, & Sommers, 2012; Sommers & Danielson, 1999; Wingfield, Aberdeen, & Stine, 1991) is that spoken word identification improves for both older and younger adults following the addition of a meaningful semantic context, but the improvements are typically greater for older adults. However, more recent findings (Jacoby, Rogers, Bishara, & Shimizu, 2012; Rogers, Jacoby, & Sommers, 2012) suggest that, especially under less favorable perceptual conditions, the increased benefits of semantic context …