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Cognition and Perception Commons

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Full-Text Articles in Cognition and Perception

Attention Modulates Erp Indices Of The Precedence Effect, Benjamin H. Zobel Nov 2014

Attention Modulates Erp Indices Of The Precedence Effect, Benjamin H. Zobel

Masters Theses

When presented with two identical sounds from different locations separated by a short onset asynchrony, listeners report hearing a single source at the location of the lead sound, a phenomenon called the precedence effect (Wallach et al., 1949; Haas, 1951). When the onset asynchrony is above echo threshold, listeners report hearing the lead and lag sounds as separate sources with distinct locations. Event-related potential (ERP) studies have shown that perception of separate sound sources is accompanied by an object-related negativity (ORN) 100-250 ms after onset and a late posterior positivity (LP) 300-500 ms after onset (Sanders et al., 2008; Sanders …


Why We Disagree: Morality And Social Categorization, Nathan Christopher Carnes Aug 2014

Why We Disagree: Morality And Social Categorization, Nathan Christopher Carnes

Masters Theses

Recent research has identified important functional differences between Prescriptive morality (based in approach motivation) and Proscriptive morality (based in avoidance motivation). The purpose of the present research was to understand the consequences of these moralities applied at the group level for social categorization, especially in response to threat. I measured social categorization with a novel method in which participants categorized same-race and cross-race morphed faces. Social Justice (which is Prescriptive morality applied to the group) was associated with more inclusive social categorization under conditions of threat compared to a control condition. Social Order (which is Proscriptive morality applied to the …


Neural Correlates Of Face Processing: Perceptual Narrowing And Categorization, Katherine Claire Dixon Aug 2014

Neural Correlates Of Face Processing: Perceptual Narrowing And Categorization, Katherine Claire Dixon

Masters Theses

Perceptual narrowing is a developmental process that occurs between 6 and 9 months of age, during which infants transition from having more general perceptual abilities to more specific abilities. An example of this would be the other-species effect, in which infants experience a decline in the ability to individuate other species’ faces. It has been suggested that an infant’s growing ability to categorize could lead to a decline in their ability to discern individuals within other-species groups (Scott & Monesson, 2009), and that this difference is related to processing styles. In this study, 9-month-old infants were tested on their subordinate-level …