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Syntax And Semantics Of Perceptual Representation, James K. Quilty-Dunn
Syntax And Semantics Of Perceptual Representation, James K. Quilty-Dunn
Dissertations, Theses, and Capstone Projects
This dissertation is a defense of perceptual pluralism, the thesis that perceptual systems deliver multiple types of representations including those used in thought. In particular, it argues that perceptual systems output iconic (i.e., image-like, analog) representations as well as discursive (i.e., language-like, digital) states. A central thesis is that perceptual representations of objects are propositional and composed of concepts. It also develops a compositional syntax of iconic representation called the coordination model, according to which icons are sets of primitive parts, each of which determines values along multiple analog feature dimensions simultaneously. The dissertation supports the conclusion that perceptual …
The Impact Of Spirituality And Trauma On Appraisals Of Psychotic-Like Experiences, Kathleen Isaac
The Impact Of Spirituality And Trauma On Appraisals Of Psychotic-Like Experiences, Kathleen Isaac
Dissertations, Theses, and Capstone Projects
Background: A substantial portion of the general population (2.5% to 31.4% internationally) reports psychotic-like experiences, which are paranormal, psychic or bizarre perceptual experiences such as voice hearing, or holding strong beliefs (i.e. superstitions) that are neither experienced as pathological nor indicative of a psychotic disorder. Cognitive models of psychosis suggest that the cognitive appraisal (i.e. personal interpretation) of the experience may help distinguish non-clinical psychotic-like experiences from clinical psychotic symptoms. This dissertation attempted to add to cognitive models by assessing whether cultural and personal factors such as spirituality and trauma inform the appraisals of anomalous experiences. This study used a …