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dc.contributor.advisorLeising, Kenneth J.
dc.contributor.authorRuprecht, Chad Martinen_US
dc.date.accessioned2014-07-22T18:48:44Z
dc.date.available2014-07-22T18:48:44Z
dc.date.created2012en_US
dc.date.issued2012en_US
dc.identifierUMI thesisen_US
dc.identifieretd-05232013-091157en_US
dc.identifierumi-10364en_US
dc.identifiercat-001996975en_US
dc.identifier.urihttps://repository.tcu.edu/handle/116099117/4429
dc.description.abstractThe overexpectation effect (OXE) is the finding that following compound training with two asymptotic elements, X and A, animals respond less during tests of X or A alone compared to animals that did not receive such a compound treatment. During Pavlovian conditioning, the temporal relationship between a conditioned stimulus (CS) and an unconditioned stimulus (US) modulates both the nature (e.g., timing) and magnitude of the conditioned response (Catania, 1970; Roberts 1981). In three experiments, we used a conditioned magazine approach paradigm to evaluate the role of timing in the OXE. We hypothesized that the response decrement seen following overexpectation would manifest as temporally specific drops in magazine approach behavior during tests of X. In Phase 1, rats were given separate trials in which X (40 s in duration) and A (10 s in duration) signaled the arrival of a common US (e.g., sucrose). The delivery the US, moreover, occurred either 30s (Experiment 1), 15 s (Experiment 2) or 5 s (Experiment 3) after the onset of X. In Phase 2, we embedded A into X such that both elements signaled the same sucrose delivery, and consequently, the rats expected twice the sucrose. Tests of X revealed that rats responded less during the time periods in which sucrose was previously overexpected, as compared to rats that received only training trials of X alone in Phase 2 (Experiment 1 and 3) or trials with a novel element, C, embedded in X (Experiment 2). These are the first studies demonstrating a temporally specific OXE.en_US
dc.format.mediumFormat: Onlineen_US
dc.publisherFort Worth, Tex. : Texas Christian University,en_US
dc.relation.ispartofTCU Master Thesisen_US
dc.relation.requiresMode of access: World Wide Web.en_US
dc.relation.requiresSystem requirements: Adobe Acrobat reader.en_US
dc.titleExploring temporal properties of the overexpectation effecten_US
dc.typeTexten_US
etd.degree.departmentDepartment of Psychology
etd.degree.levelMaster
local.collegeCollege of Science and Engineering
local.departmentPsychology
local.academicunitDepartment of Psychology
dc.type.genreThesis
local.subjectareaPsychology
etd.degree.nameMaster of Science


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