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Social and Behavioral Sciences Commons

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2013

Dissertations and Theses

Cognitive Psychology

Articles 1 - 7 of 7

Full-Text Articles in Social and Behavioral Sciences

The Effects Of Acute Psychosocial Stress On Cognitive Performance, Anne I.S. Gray Jul 2013

The Effects Of Acute Psychosocial Stress On Cognitive Performance, Anne I.S. Gray

Dissertations and Theses

The purpose of this study was to examine the effects of acute psychosocial stress on cognitive performance. Psychosocial stress evolves from the perceived presence of a social evaluative threat and results in the activation of the home hypothalamic-pituitary-adrenal axis. As part of this reaction the stress hormone cortisol is secreted into the blood stream, ultimately crossing the blood-brain barrier, where it can have profound effects on various aspects of cognition. A review of the literature reveals that that attention, working memory, spatial judgment and cognitive processing efficiency are particularly susceptible to stress induced changes in performance level. A test battery ...


Time Perception During Retrospective And Prospective Paradigms With A Distraction, Kristi L. Lontz Jul 2013

Time Perception During Retrospective And Prospective Paradigms With A Distraction, Kristi L. Lontz

Dissertations and Theses

Time duration estimates can play an intricate part of one's daily life. This study examined the time duration judgments in two paradigms, when participants were aware they were being timed (prospective) and when they were unaware they were being timed (retrospective). Furthermore, this study investigated the effect of an external stimulus, when an auditory stimulus was used, to determine the effect, if any, between both of these paradigms. To ensure the participants were engaged in a task, a simulation was used that required several tasks to be completed. To ensure the participants were engaged in the simulation, the performance ...


The Effects Of Sensor Performance As Modeled By Signal Detection Theory On The Performance Of Reinforcement Learning In A Target Acquisition Task, Nate Quirion Jul 2013

The Effects Of Sensor Performance As Modeled By Signal Detection Theory On The Performance Of Reinforcement Learning In A Target Acquisition Task, Nate Quirion

Dissertations and Theses

Unmanned Aerial Systems (UASs) today are fulfilling more roles than ever before. There is a general push to have these systems feature more advanced autonomous capabilities in the near future. To achieve autonomous behavior requires some unique approaches to control and decision making. More advanced versions of these approaches are able to adapt their own behavior and examine their past experiences to increase their future mission performance. To achieve adaptive behavior and decision making capabilities this study used Reinforcement Learning algorithms. In this research the effects of sensor performance, as modeled through Signal Detection Theory (SDT), on the ability of ...


Investigation Of Videogame Flow: Effects Of Expertise And Challenge, Jolie G. Gascon Jul 2013

Investigation Of Videogame Flow: Effects Of Expertise And Challenge, Jolie G. Gascon

Dissertations and Theses

The number of participants in this expertise and videogame flow test totaled 80 from multiple target locations. Participants engaged in various levels of the videogame SuperMario Bros. Twenty experts and twenty novices experienced the easier level of World 1-2 while the other twenty experts and novices were exposed to the more difficult level World 6-1. After gameplay, participants completed a modified survey measuring flow. This survey, along with overall percentage game score, was analyzed. A significant interaction was found between game level (challenge level) and skill levels in perceived immersion, with significant main effects for expertise in perceived skill, for ...


A Naturalistic Study Of Long-Term Working Memory Capacity For Meaningful Visual And Auditory Stimuli, Joseph M. Jaworski Apr 2013

A Naturalistic Study Of Long-Term Working Memory Capacity For Meaningful Visual And Auditory Stimuli, Joseph M. Jaworski

Dissertations and Theses

The purpose of this study was to explore long-term working memory in experts in an information-rich, dynamic domain. Of particular interest were strategies experts use to enhance long-term working memory capacity when working with verbal versus aural information. Three air traffic control instructors participated in four complex air traffic control scenarios, two radar scenarios in which information was presented visually and two non-radar scenarios in which information presentation was purely aural. Participants recalled traffic situation information at two points during and at the end of each scenario. Recall data for each scenario type were assessed in terms of evidence about ...


Spatial Cognition Differences Between Men And Women In Spatial Cue Environments During Flight Simulation, Heidi Crystal Kim Apr 2013

Spatial Cognition Differences Between Men And Women In Spatial Cue Environments During Flight Simulation, Heidi Crystal Kim

Dissertations and Theses

Ground reference maneuvers are an important component of pilot training. In order to perform these maneuvers, pilots rely on cues from the environment to determine where their aircraft is in relation to objects on the ground. This process requires a high degree of spatial cognition, which refers to the cognitive processes used to orient oneself in space. Two factors that can influence spatial cognition in the context of aviation ground reference maneuvers are the availability of spatial cues and the biological sex of the pilot. Research suggests spatial cues aid in the identification of potentially dangerous objects. In the context ...


Pre-Exposure Training As A Means To Reduce Vection Induced Symptoms Of Motion Sickness, Nicholas James Stapleton Mar 2013

Pre-Exposure Training As A Means To Reduce Vection Induced Symptoms Of Motion Sickness, Nicholas James Stapleton

Dissertations and Theses

The focus of this study was designed to empirically examine the effect of inducing mild motion sickness as an ameliorative to a more severe motion sickness exposure. Twenty-seven participants were selected for this study based upon their susceptibility to motion sickness, that is, only people who were determined to be motion susceptible were tested. All participants were exposed to a motion sickness-inducing environment. Eighteen participants were trained to adapt to motion sickness by exposure to a milder motion sickness-inducing environment, ending either 6 hours or 24 hours prior to the more severe motion test environment.

Participants during the pre-exposure experimental ...