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Articles 31 - 37 of 37
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Performance Implications Of Alternative Color-Codesin Airport X-Ray Baggage Screening, Matthew Hilscher
Performance Implications Of Alternative Color-Codesin Airport X-Ray Baggage Screening, Matthew Hilscher
Electronic Theses and Dissertations
This research investigated both cognitive and affective influences of alternative color combinations in a search task paradigm. The effects of re-mapping the existing, comparatively arbitrarily color codes of baggage X-ray images, were explored. Alternative color-codes were evaluated for improving the economy of visual search in X-ray baggage screening. Using a 2 x 2 between-groups design, the perceptual aspects of color-codes varying in degree of visual agreeability (accordant or discordant) and color contrast (high or low) were examined in terms of effectiveness (detection accuracy) and efficiency (reaction time). Three hypotheses were put forth; two postulated main effects for color contrast and …
The Role Of Domain Expertise And Judgment In Dealing With Unexpected Events, Janeen Kochan
The Role Of Domain Expertise And Judgment In Dealing With Unexpected Events, Janeen Kochan
Electronic Theses and Dissertations
Unexpected events, particularly those creating surprise, interrupt ongoing mental and behavioral processes, creating an increased potential for unwanted outcomes to the situation. Human reactions to unexpected events vary. One can hypothesize a number of reasons for this variation, including level of domain expertise, previous experience with similar events, emotional connotation, and the contextual surround of the event. Whereas interrupting ongoing activities and focusing attention temporarily on a surprising event may be a useful evolutionary response to a threatening situation, the same process may be maladaptive in today's highly dynamic world. The purpose of this study was to investigate how different …
Classroom Observations Of Attention-Deficit/Hyperactivity Disorder: Patterns And Characteristics Of Attention Over Time, Thomas M. Timko Jr.
Classroom Observations Of Attention-Deficit/Hyperactivity Disorder: Patterns And Characteristics Of Attention Over Time, Thomas M. Timko Jr.
Electronic Theses and Dissertations
Investigated differences in attentional processes between children diagnosed with Attention-Deficit/Hyperactivity Disorder (ADHD) and their classroom peers. Models of attention gleaned from laboratory experiments provided a theoretical structure for hypothesizing between-group attentional differences. Seventy-five children with ADHD and 36 normal control children were observed in their regular classrooms over a 1-week time interval. Explication of between-group differences revealed that children with ADHD were approximately 21% less attentive on average. Both groups exhibited an accelerating-decelerating pattern of attention over time, however, children with ADHD cycled at a rate twice that of same-aged peers. Six variables derived from observed attention were examined for …
Acculturation, Social Acceptance, And Adjustment Of Early Adolescents, Jenny Klein
Acculturation, Social Acceptance, And Adjustment Of Early Adolescents, Jenny Klein
Electronic Theses and Dissertations
A majority of research regarding disruptive behavior disorders in youth has focused primarily upon Caucasian children and adolescents. As a result, more investigation of the unique characteristics of youth from ethnically diverse backgrounds, particularly those from Hispanic American and African American backgrounds, is needed (Balls Organista, Organista, & Kurasaki, 2003). This study investigated the relationships between several characteristics (e.g., ethnic identity, socioeconomic status, social acceptance, and emotional and behavioral symptoms) of early adolescents belonging to diverse ethnic groups. Results suggested that socioeconomic status and degree of early adolescents' social acceptance were important factors in predicting the development of internalizing and …
Investigating The Effects Of 3-D Spatialized Auditory Cues On The Development Of Situation Awareness For Teams, Laura Milham
Investigating The Effects Of 3-D Spatialized Auditory Cues On The Development Of Situation Awareness For Teams, Laura Milham
Electronic Theses and Dissertations
This dissertation investigated the effects of spatialized auditory cues on the development of situation awareness for teams. Based on extant research, it was hypothesized that 3-D spatialized auditory cues can be utilized by teams to develop knowledge about team member location in addition to supporting the usage of team behaviors for developing and maintaining situation awareness. Accordingly, the study examined how situation awareness would be differentially influenced by varying the type of auditory cues incorporated into virtual environment (VE) team training scenarios within the context of a MOUT team task. In general, the results of this study provided partial support …
Resource Allocation Using Touch And Audition, David Mortimer
Resource Allocation Using Touch And Audition, David Mortimer
Electronic Theses and Dissertations
When people multi-task with inputs that demand attention, processing, andencoding, sensory interference is possible at almost any level. Multiple Resource Theory (MRT) suggests that such interference may be avoided by drawing from separate pools of resources available when using different sensory channels, memory processes, and even different response modes. Thus, there should be advantages in dividing tasks among different sensory channels to tap independent pools of attentional resources. For example, people are better with two tasks using the eye and ear, than when using two auditory or two visual inputs. The majority of the research on MRT involves visual to …
As Two Become One : The Lived Experience Of A Twinless Twin, Jody Ness
As Two Become One : The Lived Experience Of A Twinless Twin, Jody Ness
Electronic Theses and Dissertations
Twins enter life as a pair and are often viewed so in later life. After the death of a co-twin, twins feel like they have lost part of themselves, leaving them alone, often without professional help. No nursing research has provided insight into the experience of a twin who has lost their co-twin. The purpose of this research was to explore and describe the lived experience of a twin who has lost their co-twin. The aim was to generate an understanding of the unique bond and sense of loss experienced by twinless twins. Phenomenology and Attachment Theory were utilized to …