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Washington University in St. Louis

Theses/Dissertations

2009

Cognitive

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Using Repeated Testing And Variable Encoding To Promote Transfer Of Learning, Andrew Butler Jan 2009

Using Repeated Testing And Variable Encoding To Promote Transfer Of Learning, Andrew Butler

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Within the literature on transfer of learning, relatively few studies have investigated how the conditions of initial learning can be arranged to increase the likelihood of successful transfer. The present research investigated whether test-enhanced learning can be used to promote transfer. More specifically, four experiments examined how repeated testing and repeated studying affected retention and transfer of facts and concepts. Subjects studied prose passages and then either repeatedly re-studied or took tests on the material. One week later, they took a final test that either had the same questions: Experiment 1), new inferential questions within the same knowledge domain: Experiments …


Training And Transfer Of Attentional Control In Older Adulthood, Anna Mackay-Brandt Jan 2009

Training And Transfer Of Attentional Control In Older Adulthood, Anna Mackay-Brandt

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Recent research in cognitive aging has brought renewed interest to a decades old question. Can cognitive skills be trained, and if so, how widely does that trained skill transfer? Previous research has demonstrated that older adults are able to improve their performance on laboratory cognitive tests and in some cases these benefits can transfer to other similar tests: e.g. Kramer et al., 2004). A few cases have demonstrated transfer to more distal outcomes: Willis et al., 2006). This area of research is still in an early stage, and reports are mixed with regard to the efficacy of cognitive training. These …


The Role Of Knowledge Accessibility In Episodic Future Thought, Karl Szpunar Jan 2009

The Role Of Knowledge Accessibility In Episodic Future Thought, Karl Szpunar

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The capacity to think about specific events that one might encounter in the future--episodic future thought--involves the flexible: re)organization of knowledge. However, little is known about the cognitive mechanisms that guide this process. The reported studies demonstrate evidence for the role of knowledge accessibility as one such mechanism. First, comparisons were drawn between episodic future thought and other cognitive tasks that similarly require participants to produce open-ended responses and for which the role of knowledge accessibility is well established. Second, three experiments: N = 270) provided direct tests of whether accessible knowledge becomes incorporated into episodic future thought. In Experiments …


Associative Memory Processes In Schizophrenia, Aaron Bonner-Jackson Jan 2009

Associative Memory Processes In Schizophrenia, Aaron Bonner-Jackson

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Individuals with schizophrenia demonstrate cognitive deficits in a number of domains, including episodic memory: EM). Memory for both individual items and associations between items is impaired in schizophrenia, with some indication of a more severe deficit in associative memory. Furthermore, such memory impairments have been consistently linked with abnormalities in brain activation during both encoding and retrieval. However, certain experimental manipulations at the encoding and retrieval stages of EM significantly benefit memory performance in schizophrenia, suggesting that a strategic processing deficit may underlie memory impairment in schizophrenia. Additionally, the provision of beneficial encoding strategies increases encoding-related brain activity in key …


Age Differences In Prospective Memory: An Examination Of The Role Of Fluctuations In Executive Control, Shannon Robertson Jan 2009

Age Differences In Prospective Memory: An Examination Of The Role Of Fluctuations In Executive Control, Shannon Robertson

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Prospective memory: ProM)-remembering to carry out intended actions at appropriate times-is a cognitive function that relies on controlled or automatic processing to various degrees. Age differences in ProM are most likely to be observed on tasks that rely heavily on controlled processes. This is consistent with certain frontal lobe theories of cognitive aging that also make predictions regarding age differences in performance variability on speeded components of ProM tasks that vary in the extent to which controlled processes are required. This study consisted of two experiments designed to test those predictions. In the first experiment, the degree to which controlled …


Source Memory In Social Contexts, Bianca Basten Jan 2009

Source Memory In Social Contexts, Bianca Basten

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Source memory is memory for where, when, how, and from whom information was received. Current source memory literature focuses mainly on memory for incidental information: i.e., where, when, how) rather than source identity: i.e., who). This dissertation addressed the role of source memory in social contexts and memory for source identity. Four experiments were designed to investigate the effects of information valence, target familiarity, and source congruence. 120 participants viewed a series of negative and positive statements about two targets provided by four sources and were later asked to identify the source of the information. Targets were considered positive and …