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Pages
- Title
- SPATIAL SCHEMA TRANSFERS TO SIMILAR PLACE: A CASE OF DISNEY THEME PARKS.
- Creator
-
Kopel, Daphne, Sims, Valerie, University of Central Florida
- Abstract / Description
-
The intent of this thesis is to explore whether an existing spatial schema assists with learning a similar environment to the existing schema. Spatially experienced and non- experienced participants of Magic Kingdom Park learned a similar park, Disneyland Park, using a virtual environment. Participants learned the virtual environment either passively or actively. Spatially experienced participants outperformed the non-experienced participants on survey and route knowledge assessments, despite...
Show moreThe intent of this thesis is to explore whether an existing spatial schema assists with learning a similar environment to the existing schema. Spatially experienced and non- experienced participants of Magic Kingdom Park learned a similar park, Disneyland Park, using a virtual environment. Participants learned the virtual environment either passively or actively. Spatially experienced participants outperformed the non-experienced participants on survey and route knowledge assessments, despite of the training method used in the virtual environment. The results suggest that the existing schema for a similar place transfers to the new environment regardless of passive or active training.
Show less - Date Issued
- 2014
- Identifier
- CFH0004573, ucf:45153
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004573
- Title
- SACRED CHANGES ON CAMPUS: THE EFFECTS OF HIGHER EDUCATIONAL EXPERIENCE ON RELIGIOSITY AND SPIRITUALITY, AND RESOLVING COGNITIVE DISSONANCE.
- Creator
-
Gaulden, Shawn, Gay, David, University of Central Florida
- Abstract / Description
-
Changes in religious and spiritual trends over the past few decades are contradicting previously held assumptions in academia pertaining to personal religious and spiritual definitions, identities and how these religious and spiritual identities are affected by higher educational attainment. In addition, there is limited research on how students may resolve cognitive dissonance if it develops due to discrepancies between their college experiences and their personal spiritual or religious...
Show moreChanges in religious and spiritual trends over the past few decades are contradicting previously held assumptions in academia pertaining to personal religious and spiritual definitions, identities and how these religious and spiritual identities are affected by higher educational attainment. In addition, there is limited research on how students may resolve cognitive dissonance if it develops due to discrepancies between their college experiences and their personal spiritual or religious convictions. The intent of this thesis is to explore the effects of college experience and higher educational attainment on students' religious and spiritual identities; to explore the growing trend to identify as 'spiritual, but not religious;' and to explore whether any changes in their religious and spiritual identity are as a result of adjustments spurred by cognitive dissonance. This study helps fill in gaps in current literature about the effects of higher education on religious and spiritual identity and their resolutions of cognitive dissonance.
Show less - Date Issued
- 2012
- Identifier
- CFH0004179, ucf:44820
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004179
- Title
- MUSIC AND PALEOLITHIC MAN: THE SOUNDTRACK OF HUMAN COGNITIVE DEVELOPMENT.
- Creator
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Angel, Samantha, Walker, John, University of Central Florida
- Abstract / Description
-
Archaeologists have pored over countless texts of the ancient civilizations, attempting to piece together bygone worlds. However, relatively little work has been done to reconstruct the musical history of these societies, and even less on why their musical histories are important. This paper aims at a synthesis between the ancient Egyptian and classical Greek archaeological records to analyze the importance of music in Paleolithic human cognitive development. Countless musical instruments...
Show moreArchaeologists have pored over countless texts of the ancient civilizations, attempting to piece together bygone worlds. However, relatively little work has been done to reconstruct the musical history of these societies, and even less on why their musical histories are important. This paper aims at a synthesis between the ancient Egyptian and classical Greek archaeological records to analyze the importance of music in Paleolithic human cognitive development. Countless musical instruments have been discovered globally, ranging from pre-Columbian bone flutes in Oaxaca, Mexico to ancient trumpets in Egyptian burials (Barber et al 2009). Apart from their place in a museum, minimal work has been done to ascertain their importance to human society as a whole. This thesis attempts to display the crucial need for more research in this field. The recent decline in support for arts education in favor of 'hard sciences' and mathematics is deeply disturbing; the history of humanity should be important not only to anthropologists and historians, but to members of all disciplines. This lack of interest in 'soft sciences' and the arts may lead to a complete loss of ancient musical history; a loss that would be devastating to history, anthropology and the worlds. The contents of this paper portray both the ancient importance of music, and how it contributed to increased cognitive faculties during hominid development.
Show less - Date Issued
- 2012
- Identifier
- CFH0004182, ucf:44853
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004182
- Title
- ADOLESCENTS' STRESS AND HEALTH: PARENTAL INFLUENCES AND COGNITIVE MEDIATORS.
- Creator
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Donnelly, Reesa, Renk, Kimberly, University of Central Florida
- Abstract / Description
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Research to date indicates that parental and cognitive variables play a role in stress responses and health outcomes. Although researchers are beginning to focus on developmental processes in stress/health outcomes, there is little research examining which parental behaviors are most predictive of stress/health and whether cognitive variables mediate this relationship. As a result, the current study examines the self-reports of 160 late adolescents regarding parental behaviors, cognitive...
Show moreResearch to date indicates that parental and cognitive variables play a role in stress responses and health outcomes. Although researchers are beginning to focus on developmental processes in stress/health outcomes, there is little research examining which parental behaviors are most predictive of stress/health and whether cognitive variables mediate this relationship. As a result, the current study examines the self-reports of 160 late adolescents regarding parental behaviors, cognitive variables, and stress/health outcomes. In addition, blood pressure reactivity to a stressful situation was collected as a physiological measure of stress. The results suggest that, among the parental behaviors that are examined, parental overprotection and poor monitoring are the most predictive variables of adolescents' stress/health. The results indicate that adolescents' cognitions also are significant predictors of their self-reported stress/health. Further, adolescents' cognitions fully mediate the relationship between paternal behaviors and stress/health outcomes and partially mediate the relationship between maternal behaviors and stress/health outcomes. Finally, measures of blood pressure reactivity are not significantly related to study variables or were related in unpredicted directions. Possible explanations for these results are discussed. Overall, future research should examine parental overprotection and poor monitoring as important distal variables in adolescents' stress/health but should examine adolescents' cognitions as a more salient and immediate predictor of adolescents' stress/health.
Show less - Date Issued
- 2008
- Identifier
- CFE0002367, ucf:47778
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002367
- Title
- If a Virtual Tree Falls in a Simulated Forest, is the Sound Restorative? An Examination of the Role of Level of Immersion in the Restorative Capacity of Virtual Nature Environments.
- Creator
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Michaelis, Jessica, Smither, Janan, Mcconnell, Daniel, Beidel, Deborah, Harris, Paul, University of Central Florida
- Abstract / Description
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Stress and cognitive fatigue have become a pervasive problem, especially in Western society. Stress and cognitive fatigue can have deleterious effects not only on performance, but also on one's physical and mental health. This dissertation presents a study in which the aim is to investigate the effects of virtual nature on stress reduction and cognitive restoration. Specifically, this study assessed the effects of Immersion (Non-immersive, Semi-immersive, Fully-immersive) and Exploration ...
Show moreStress and cognitive fatigue have become a pervasive problem, especially in Western society. Stress and cognitive fatigue can have deleterious effects not only on performance, but also on one's physical and mental health. This dissertation presents a study in which the aim is to investigate the effects of virtual nature on stress reduction and cognitive restoration. Specifically, this study assessed the effects of Immersion (Non-immersive, Semi-immersive, Fully-immersive) and Exploration (Passive vs Active) on stress reduction and cognitive restoration. Additionally, restoration from the most effective virtual nature environment was compared to that of taking an active coloring break. Eighty-three university students with normal color vision, depth perception and good visual acuity participated in this study. The overall findings of the study suggest that virtual nature is able to reduce stress and anxiety, generally the more immersive and interactive the better. Moreover, though both the those in the passive VR nature condition and those in the coloring condition reported a reduction in stress, only those in the passive VR nature condition exhibited the physiological changes indicative of stress reduction.
Show less - Date Issued
- 2019
- Identifier
- CFE0007687, ucf:52516
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007687
- Title
- Bootstrapping Cognitive Radio Networks.
- Creator
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Horine, Brent, Turgut, Damla, Wei, Lei, Boloni, Ladislau, Sukthankar, Gita, Garibay, Ivan, University of Central Florida
- Abstract / Description
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Cognitive radio networks promise more efficient spectrum utilization by leveraging degrees of freedom and distributing data collection. The actual realization of these promises is challenged by distributed control, and incomplete, uncertain and possibly conflicting knowledge bases. We consider two problems in bootstrapping, evolving, and managing cognitive radio networks. The first is Link Rendezvous, or how separate radio nodes initially find each other in a spectrum band with many degrees...
Show moreCognitive radio networks promise more efficient spectrum utilization by leveraging degrees of freedom and distributing data collection. The actual realization of these promises is challenged by distributed control, and incomplete, uncertain and possibly conflicting knowledge bases. We consider two problems in bootstrapping, evolving, and managing cognitive radio networks. The first is Link Rendezvous, or how separate radio nodes initially find each other in a spectrum band with many degrees of freedom, and little shared knowledge. The second is how radio nodes can negotiate for spectrum access with incomplete information.To address the first problem, we present our Frequency Parallel Blind Link Rendezvous algorithm. This approach, designed for recent generations of digital front-ends, implicitly shares vague information about spectrum occupancy early in the process, speeding the progress towards a solution. Furthermore, it operates in the frequency domain, facilitating a parallel channel rendezvous. Finally, it operates without a control channel and can rendezvous anywhere in the operating band. We present simulations and analysis on the false alarm rate for both a feature detector and a cross-correlation detector. We compare our results to the conventional frequency hopping sequence rendezvous techniques.To address the second problem, we model the network as a multi-agent system and negotiate by exchanging proposals, augmented with arguments. These arguments include information about priority status and the existence of other nodes. We show in a variety of network topologies that this process leads to solutions not otherwise apparent to individual nodes, and achieves superior network throughput, request satisfaction, and total number of connections, compared to our baselines. The agents independently formulate proposals based upon communication desires, evaluate these proposals based upon capacity constraints, create arguments in response to proposal rejections, and re-evaluate proposals based upon received arguments. We present our negotiation rules, messages, and protocol and demonstrate how they interoperate in a simulation environment.
Show less - Date Issued
- 2012
- Identifier
- CFE0004546, ucf:49240
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004546
- Title
- NONINVASIVE PHYSIOLOGICAL MEASURES AND WORKLOAD TRANSITIONS:AN INVESTIGATION OF THRESHOLDS USING MULTIPLE SYNCHRONIZED SENSORS.
- Creator
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Sciarini, Lee, Nicholson, Denise, University of Central Florida
- Abstract / Description
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The purpose of this study is to determine under what conditions multiple minimally intrusive physiological sensors can be used together and validly applied for use in areas which rely on adaptive systems including adaptive automation and augmented cognition. Specifically, this dissertation investigated the physiological transitions of operator state caused by changes in the level of taskload. Three questions were evaluated including (1) Do differences exist between physiological indicators...
Show moreThe purpose of this study is to determine under what conditions multiple minimally intrusive physiological sensors can be used together and validly applied for use in areas which rely on adaptive systems including adaptive automation and augmented cognition. Specifically, this dissertation investigated the physiological transitions of operator state caused by changes in the level of taskload. Three questions were evaluated including (1) Do differences exist between physiological indicators when examined between levels of difficulty? (2) Are differences of physiological indicators (which may exist) between difficulty levels affected by spatial ability? (3) Which physiological indicators (if any) account for variation in performance on a spatial task with varying difficulty levels? The Modular Cognitive State Gauge model was presented and used to determine which basic physiological sensors (EEG, ECG, EDR and eye-tracking) could validly assess changes in the utilization of two-dimensional spatial resources required to perform a spatial ability dependent task. Thirty-six volunteers (20 female, 16 male) wore minimally invasive physiological sensing devices while executing a challenging computer based puzzle task. Specifically, participants were tested with two measures of spatial ability, received training, a practice session, an experimental trial and completed a subjective workload survey. The results of this experiment confirmed that participants with low spatial ability reported higher subjective workload and performed poorer when compared to those with high spatial ability. Additionally, there were significant changes for a majority of the physiological indicators between two difficulty levels and most importantly three measures (EEG, ECG and eye-tracking) were shown to account for variability in performance on the spatial task.
Show less - Date Issued
- 2009
- Identifier
- CFE0002781, ucf:48108
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002781
- Title
- DOES CHRONIC STRESS ACCELERATE LATE-AGING COGNITIVE DECLINE IN MEMORY AND EXECUTIVE FUNCTIONING?.
- Creator
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Robinson, Diane, Bedwell, Jeffrey, University of Central Florida
- Abstract / Description
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Few studies exist examining the relationship between self-reported stress and cognitive function in healthy nonpsychiatric older adults, and even less studies have examined whether high levels of self-reported stress accelerate the cognitive decline found in normal late-aging populations. A group of older nonpsychiatric adults, ages 54 years and above, were asked to complete three measures assessing their self-perceived stress over the past month, past year, and their lifetime. Sixty-one...
Show moreFew studies exist examining the relationship between self-reported stress and cognitive function in healthy nonpsychiatric older adults, and even less studies have examined whether high levels of self-reported stress accelerate the cognitive decline found in normal late-aging populations. A group of older nonpsychiatric adults, ages 54 years and above, were asked to complete three measures assessing their self-perceived stress over the past month, past year, and their lifetime. Sixty-one adults between the ages of 54 and 88 (52% female) participated in a second phase in which neuropsychological tasks were administered to assess three cognitive domains; memory, learning, and executive functioning. A hierarchical regression examined each of the three domain scores to explore whether self-perceived acute and chronic stress, after covaring for state anxiety, was related to neuropsychological performance. No statistically significant regressions were found, which was predicted for the learning domain, but contrary to the hypotheses for the memory and executive functioning domain. The potential influence of age in this study was explored in a series of ANOVAs examining the interactions between the three stress measures with state anxiety and age on the three cognitive domains. A statistically significant interaction was found between age and perceived lifetime stress when examining the memory domain score. In the young-old participants an increase in stress showed a non-significant relationship with a decrease in memory performance, while in the older-old participants the opposite non-significant tendency was found. The current study also partially replicated an earlier report of a relationship between an increase in recent self-reported stress and a decrease in performance on a specific divided attention task, and extended this finding to include older adults. While the majority of the studyÂÂ's hypotheses were not supported, these preliminary findings provide the field with interesting areas to explore in future studies.
Show less - Date Issued
- 2010
- Identifier
- CFE0003256, ucf:48515
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003256
- Title
- Beyond Compliance: Examining the Role of Motivation in Vigilance Performance.
- Creator
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Dewar, Alexis, Szalma, James, Sims, Valerie, Hancock, Peter, Matthews, Gerald, University of Central Florida
- Abstract / Description
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Vigilance, or sustained attention, is the capacity to attend to information for a prolonged period of time (Davies (&) Parasuraman, 1982; Jerison, 1970; Warm, 1977). Due to limitations of the human nervous system, as well as the environmental context, attention can begin to wane over time. This results in a phenomenon referred to as the vigilance decrement, or a decline in vigilance performance as a function of time. The vigilance decrement can manifest as poorer attention and is thusly...
Show moreVigilance, or sustained attention, is the capacity to attend to information for a prolonged period of time (Davies (&) Parasuraman, 1982; Jerison, 1970; Warm, 1977). Due to limitations of the human nervous system, as well as the environmental context, attention can begin to wane over time. This results in a phenomenon referred to as the vigilance decrement, or a decline in vigilance performance as a function of time. The vigilance decrement can manifest as poorer attention and is thusly associated with poor performance, which is defined behaviorally as more lapses in the detection of critical signals and an increase in response time to these signals during watch. Given this, the present dissertation seeks to systematically examine the impact of two types of motivation (i.e., achievement motivation, autonomous motivation) on vigilance performance across four experiments. The present experiments manipulate information processing type, source complexity, and motivational task demands. Three hundred and ninety-eight participants completed either a cognitive task or sensory task, which were psychophysically equated in previous studies (Szalma (&) Teo, 2012; Teo, Szalma, (&) Schmidt, 2011), with or without motivational instructions, and with either low, medium, or high source complexity. Performance measures, perceived stress and workload, and changes to state motivation and engagement at pre-task and post-task are interpreted across three theories of information processing: resource-depletion theory, mind-wandering theory, and mindlessness theory. The results of each of the four studies are discussed in terms of overall support for the resource-depletionist account. The limitations of the present set of experiments and the future directions for research on motivation and sustained attention are also discussed.
Show less - Date Issued
- 2017
- Identifier
- CFE0006582, ucf:51312
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006582
- Title
- Understanding Human Performance and Social Presence: An Analysis of Vigilance and Social Facilitation.
- Creator
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Claypoole, Victoria, Szalma, James, Mouloua, Mustapha, Sims, Valerie, Hancock, Peter, Joseph, Dana, University of Central Florida
- Abstract / Description
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Social facilitation is characterized by improved performance on simple, or well-known, tasks and impaired performance on complex, or unfamiliar, tasks. Previous research has demonstrated that the use of social presence may improve performance on cognitive-based tasks that are relevant to many organizational contexts, such as vigilance. However, to date, there has not been consolidation of the research regarding the different implementations of social facilitation, or any analysis indicating...
Show moreSocial facilitation is characterized by improved performance on simple, or well-known, tasks and impaired performance on complex, or unfamiliar, tasks. Previous research has demonstrated that the use of social presence may improve performance on cognitive-based tasks that are relevant to many organizational contexts, such as vigilance. However, to date, there has not been consolidation of the research regarding the different implementations of social facilitation, or any analysis indicating which types of social presence are best under varying conditions. The present dissertation describes three experiments that seek to contribute to a taxonomic framework of social facilitation. Experiment One statistically established a difference in task difficulty between twoversions of a cognitive-based vigilance task by utilizing increasing increments of event rate in order to examine the first factor of the taxonomy (i.e., level of difficulty). Experiment Two explored the effects of two novel manipulations of social presence, electronic performance monitoring (i.e., EPM) and co-acting, in order to demonstrate that both novel forms of social presence could improve performance, and were worth examining further. Finally, ExperimentThree replicated and extended the results of Experiments One and Two by examining the interaction effects of levels of task difficulty and social presence through the use of ten conditions. Overall the results indicates that multiple forms of social presence can improve cognitive performance, however, this effect was not moderated by the level of task difficulty, as suggestedby the predominant theories of social facilitation. This suggests that future work should seek to replicate and extend this finding in order to determine if the level of task difficult is indeed a moderating variable of social facilitation. Additionally, the results demonstrated that social presence could be used in organizational settings in order to improve employee performance, while also sometimes reducing the perceived workload associated with the task.
Show less - Date Issued
- 2018
- Identifier
- CFE0006989, ucf:51631
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006989
- Title
- Spectrum Map and its Application in Cognitive Radio Networks.
- Creator
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Debroy, Saptarshi, Chatterjee, Mainak, Bassiouni, Mostafa, Zou, Changchun, Jha, Sumit, Catbas, Necati, University of Central Florida
- Abstract / Description
-
Recent measurements on radio spectrum usage have revealed the abundance of underutilizedbands of spectrum that belong to licensed users. This necessitated the paradigm shift from static to dynamic spectrum access. Cognitive radio based secondary networks thatutilize such unused spectrum holes in the licensed band, have been proposed as a possible solution to the spectrum crisis. The idea is to detect times when a particular licensed band is unused and use it for transmission without causing...
Show moreRecent measurements on radio spectrum usage have revealed the abundance of underutilizedbands of spectrum that belong to licensed users. This necessitated the paradigm shift from static to dynamic spectrum access. Cognitive radio based secondary networks thatutilize such unused spectrum holes in the licensed band, have been proposed as a possible solution to the spectrum crisis. The idea is to detect times when a particular licensed band is unused and use it for transmission without causing interference to the licensed user. We argue that prior knowledge about occupancy of such bands and the corresponding achievable performance metrics can potentially help secondary networks to devise effective strategiesto improve utilization.In this work, we use Shepard's method of interpolation to create a spectrum mapthat provides a spatial distribution of spectrum usage over a region of interest. It is achieved by intelligently fusing the spectrum usage reports shared by the secondary nodes at various locations. The obtained spectrum map is a continuous and differentiable 2-dimension distribution function in space. With the spectrum usage distribution known, we show how different radio spectrum and network performance metrics like channel capacity, secondary network throughput, spectral efficiency, and bit error rate can be estimated. We show the applicability of the spectrum map in solving the intra-cell channel allocation problem incentralized cognitive radio networks, such as IEEE 802.22. We propose a channel allocationscheme where the base station allocates interference free channels to the consumer premise equipments (CPE) using the spectrum map that it creates by fusing the spectrum usage information shared by some CPEs. The most suitable CPEs for information sharing arechosen on a dynamic basis using an iterative clustering algorithm. Next, we present a contention based media access control (MAC) protocol for distributed cognitive radio network. The unlicensed secondary users contend among themselves over a common control channel. Winners of the contention get to access the available channels ensuring high utilization and minimum collision with primary incumbent. Last, we propose a multi-channel, multi-hop routing protocol with secondary transmission power control. The spectrum map, created and maintained by a set of sensors, acts as the basis of finding the best route for every source destination pair. The proposed routing protocol ensures primary receiver protection and maximizes achievable link capacity.Through simulation experiments we show the correctness of the prediction model and how it can be used by secondary networks for strategic positioning of secondary transmitter-receiver pairs and selecting the best candidate channels. The simulation model mimics realistic distribution of TV stations for urban and non-urban areas. Results validate the nature and accuracy of estimation, prediction of performance metrics, and efficiency of the allocation process in an IEEE 802.22 network. Results for the proposed MAC protocol show high channel utilization with primary quality of service degradation within a tolerable limit. Performance evaluation of the proposed routing scheme reveals that it ensures primary receiver protection through secondary power control and maximizes route capacity.
Show less - Date Issued
- 2014
- Identifier
- CFE0005324, ucf:50515
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005324
- Title
- Autobiographical Memory and Theory of Mind in Schizotypy.
- Creator
-
Deptula, Andrew, Bedwell, Jeffrey, Beidel, Deborah, Sims, Valerie, University of Central Florida
- Abstract / Description
-
Individuals with schizophrenia exhibit marked impairments on tasks assessing theory of mind (ToM) and autobiographical memory (AM) qualities, and preliminary research has indicated a positive link between these abilities. This study is the first to systematically explore this relationship in the related personality trait of schizotypy. In a study of 47 undergraduate students (23 males) reporting a wide continuous range of schizotypy, we found that females, but not males, exhibited a negative...
Show moreIndividuals with schizophrenia exhibit marked impairments on tasks assessing theory of mind (ToM) and autobiographical memory (AM) qualities, and preliminary research has indicated a positive link between these abilities. This study is the first to systematically explore this relationship in the related personality trait of schizotypy. In a study of 47 undergraduate students (23 males) reporting a wide continuous range of schizotypy, we found that females, but not males, exhibited a negative correlation between ToM and schizotypy, and an unexpected positive correlation between AM qualities and schizotypy. Factor score analysis within females indicated that disorganized schizotypy was the strongest correlate of both ToM (i.e., affective ToM; ability to infer emotions), and AM qualities (i.e., mental imagery vividness). Finally, independent of schizotypy and sex, ToM was negatively correlated with AM qualities. This negative association between ToM and AM as well as the positive relationship between schizotypy and AM (in females) distinguish findings in schizotypy from those in schizophrenia. Although, the qualities of AM in schizotypy are relatively unexplored in schizotypy, overlapping and AM-related constructs (e.g., mental image vividness, creativity) are enhanced in schizotypy. This phenomenon is theorized to occur due to a reduced latent inhibition process, which also reveals distinct patterns of sexual dimorphism in schizotypy. In sum, the current study found sex to be a critical variable in each hypothesis, demonstrating a unique pattern in females, but not males. It could be that distinct underlying mechanisms account for sex differences on ToM and AM tasks in schizophrenia-related disorders.
Show less - Date Issued
- 2013
- Identifier
- CFE0004671, ucf:49855
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004671
- Title
- AN EXPLORATION OF THE POTENTIALS AND LIMITATIONS OF ADAPTING TRADITIONAL TEXT-BASED NARRATIVE TO INTERACTIVE TECHNOLOGY.
- Creator
-
Jardaneh, Said, Fiore, Stephen, University of Central Florida
- Abstract / Description
-
Narrative is expressed in many forms, yet the reading of narrative through books may be unique in its transformative qualities. The medium of books has existed for thousands of years as a primary means of passing down and internalizing narrative from generation to generation. Are books now a dying medium in the face of ever-advancing technology in an increasingly fast-paced and technologically-dependent society? Technology now incorporates narrative into interactive environments in various...
Show moreNarrative is expressed in many forms, yet the reading of narrative through books may be unique in its transformative qualities. The medium of books has existed for thousands of years as a primary means of passing down and internalizing narrative from generation to generation. Are books now a dying medium in the face of ever-advancing technology in an increasingly fast-paced and technologically-dependent society? Technology now incorporates narrative into interactive environments in various ways often immersing the user in ever more realistic experiential scenarios. Yet, is something potentially lost with these advancements that can only be afforded through the time-tested method of old-fashioned reading? What makes reading so compelling a medium/activity for personal development? Does experience in these interactive environments offer the same transformative intrinsic experience afforded through the tranquil receptive processing, reflective elaboration and insight offered through the reading of books? This thesis seeks to explore these questions by looking at three major factors that must be considered in furthering our understanding of the potentials and limitations of interactive narrative technologies as they compare to narrative delivered via the established medium of books: 1) theories of self, identity/character, cognitive development and behavior (specifically as these relate to traditional text-based narrative), 2) theory and research associated with narrative transportation and transformation, and 3) current and future efforts to adapt narrative to the medium of interactive technology.
Show less - Date Issued
- 2010
- Identifier
- CFE0003037, ucf:48360
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003037
- Title
- More is not always better: Unpacking the cognitive process underlying introspective psychological measurement.
- Creator
-
Lapalme, Matthew, Wang, Wei, Fritzsche, Barbara, Jentsch, Florian, University of Central Florida
- Abstract / Description
-
For decades, psychometricans have measured non-cognitive constructs with little attention paid to the underlying cognitive processes of response. Previous advancement in psychometrics suggests that traditional cognitive oriented approaches may, in fact, yield construct deficiency and spurious results when applied to non-cognitive measurement. This thesis highlights the importance of specifying an ideal point response process for non-cognitive measurement and empirically demonstrates that an...
Show moreFor decades, psychometricans have measured non-cognitive constructs with little attention paid to the underlying cognitive processes of response. Previous advancement in psychometrics suggests that traditional cognitive oriented approaches may, in fact, yield construct deficiency and spurious results when applied to non-cognitive measurement. This thesis highlights the importance of specifying an ideal point response process for non-cognitive measurement and empirically demonstrates that an ideal point response processes undergirds self-reported personality and attitude measurement. Furthermore, this thesis also advances current understanding on the limitations of ideal point assumptions by exploring the moderating effects of various individual differences in motivation and ability.
Show less - Date Issued
- 2015
- Identifier
- CFE0006223, ucf:51074
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006223
- Title
- The Longitudinal Relationship between Moderate Alcohol Use and Cognitive Aging among Older Adults.
- Creator
-
Herring, Danielle, Paulson, Daniel, Renk, Kimberly, Lighthall, Nichole, University of Central Florida
- Abstract / Description
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Cognitive aging appears inconsistent across cognitive domains, indicating that domains may not all decline at the same rate across individuals. Individual trajectories of cognitive aging can vary widely and are affected by numerous lifestyle and health factors. Alcohol use among older adults is known to confer both health risks, typically related to excessive use, and protective effects, often associated with moderate consumption. Moderate alcohol use has been linked with better cognitive...
Show moreCognitive aging appears inconsistent across cognitive domains, indicating that domains may not all decline at the same rate across individuals. Individual trajectories of cognitive aging can vary widely and are affected by numerous lifestyle and health factors. Alcohol use among older adults is known to confer both health risks, typically related to excessive use, and protective effects, often associated with moderate consumption. Moderate alcohol use has been linked with better cognitive functioning as well as a decrease in cardiovascular mortality and systemic inflammation, as compared to heavy or abstinent users. Given that extant research has identified C-reactive protein (CRP) as a mediator between the relationship of moderate alcohol use and cardiovascular disease mortality, this study examined the potential mediating role of CRP between moderate alcohol use and cognitive performance in later life. Therefore, the primary goals of this thesis were to: (1) examine the relationship between moderate alcohol use and cognitive aging over time in a demographically representative, longitudinal survey of Americans over the age of 65, and (2) examine a potential biological mechanisms by which this putative relationship functions. The sample utilized for this study consisted of the ADAMS sample of the Health and Retirement Study (HRS), a longitudinal, cohort-style study on health, retirement, and aging conducted by the University of Michigan and supported by the National Institute of Aging. In order to assess the effect of moderate alcohol use as related to the rate of change in cognitive performance over time, a series of slope-intercept models were run. Logistic regressions and Kaplan-Meier survival analysis were used to examine predictors of dementia risk and time-to-diagnosis. Results indicated that moderate alcohol use was significantly associated with better baseline functioning across cognitive measures (p ?.05), but had no significant effect on rate of change over time. Next, structural equation models were employed to examine the effect of alcohol use on cognitive performance as mediated by CRP within each domain. Ultimately, results from this study did not support the hypothesized models. Following this, a logistic regression and survival analysis were conducted in order to assess the effect of moderate alcohol use on dementia diagnosis. Results of these analyses indicated that moderate users of alcohol develop dementia at lower rates, and later in life, than do abstinent older adults. Lastly, a structural equation model was run to evaluate the effect of alcohol use on dementia diagnosis as mediated by CRP. Primary findings did not support the hypothesized model. Overall, findings from this study suggest that moderate alcohol use is associated with better cognitive functioning among community-dwelling older adults, and these relative benefits appear to persist throughout later life. Moderate alcohol use may also be related to a slower rate and onset of dementia development. Future research should investigate alternate biological mechanisms relating moderate alcohol use and cognitive functioning in later life.
Show less - Date Issued
- 2016
- Identifier
- CFE0006460, ucf:51432
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006460
- Title
- Declarative Memory, Theory of Mind, and Community Functioning in Schizophrenia.
- Creator
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Deptula, Andrew, Bedwell, Jeffrey, Paulson, Daniel, Sims, Valerie, Fiore, Stephen, University of Central Florida
- Abstract / Description
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Cognitive impairments are highly prevalent in individuals with schizophrenia and are now considered hallmark features of the disorder. Over the past decade, considerable evidence has demonstrated the functional significance of social and nonsocial cognitive impairments in individuals with schizophrenia. However, the nature of the relationship between specific domains of social and nonsocial cognition and how they relate to functional outcome in this population is less clear. In particular,...
Show moreCognitive impairments are highly prevalent in individuals with schizophrenia and are now considered hallmark features of the disorder. Over the past decade, considerable evidence has demonstrated the functional significance of social and nonsocial cognitive impairments in individuals with schizophrenia. However, the nature of the relationship between specific domains of social and nonsocial cognition and how they relate to functional outcome in this population is less clear. In particular, declarative memory impairment has been suggested to have critical consequences for the everyday life of individuals with schizophrenia and may play a role in their social integration difficulties. Preliminary evidence also indicates that theory of mind (ToM) may be an important intermediary between nonsocial cognition and functional outcome. The current study aimed to better understand the relationships between declarative memory, ToM, and functional outcome in individuals with schizophrenia.
Show less - Date Issued
- 2016
- Identifier
- CFE0006096, ucf:51207
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006096
- Title
- SOCIAL ANXIETY AND SUBTYPES OF EMPATHY: THE MODERATING INFLUENCE OF BIOLOGICAL SEX.
- Creator
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Berg, Samantha K, Bedwell, Jeffrey, University of Central Florida
- Abstract / Description
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Only a few studies have examined relationships between social anxiety and subtypes of empathy. Findings are mixed. The present study examined social anxiety severity on a continuum and how it related to affective and cognitive empathy in 684 nonpsychiatric adults (77% female). Participants completed an online battery of measures that included: a self-report measure of social anxiety severity (Fear of Negative Evaluation), a self-report measure with subscales for affective and cognitive...
Show moreOnly a few studies have examined relationships between social anxiety and subtypes of empathy. Findings are mixed. The present study examined social anxiety severity on a continuum and how it related to affective and cognitive empathy in 684 nonpsychiatric adults (77% female). Participants completed an online battery of measures that included: a self-report measure of social anxiety severity (Fear of Negative Evaluation), a self-report measure with subscales for affective and cognitive empathy (Interpersonal Reactivity Index), and a behavioral measure of cognitive empathy (Reading the Mind in the Eyes Task; MIE). After statistically covarying for general anxiety severity, biological sex moderated the relationship between social anxiety severity and performance on the MIE task. In women, a higher severity of social anxiety related to better performance on the MIE. This relationship was not statistically significant in men. IRI subscale scores did not show significant main effects or interactions with sex in relation to social anxiety. The findings suggest a possible difference in how each sex experiences and/or develops social anxiety. This has implications for assessment and treatment. Future research should examine these relationships in more diverse psychiatric samples.
Show less - Date Issued
- 2018
- Identifier
- CFH2000449, ucf:45871
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH2000449
- Title
- COMPARING SEXUAL COGNITION AND RISK BY GENDER.
- Creator
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Dauk, Jacquelynne, Wright, Chrysalis, University of Central Florida
- Abstract / Description
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The ways in which sexuality is perceived among members of society has substantial effects in regards to overall health and well-being. The current study investigates not only the nature of sexual cognition but also the differences in cognition in regards to participant genders. More specifically, this study seeks to investigate the differences in sexual attitudes and thoughts among different genders that may lead to different forms of sexual risk. In order to identify these differences,...
Show moreThe ways in which sexuality is perceived among members of society has substantial effects in regards to overall health and well-being. The current study investigates not only the nature of sexual cognition but also the differences in cognition in regards to participant genders. More specifically, this study seeks to investigate the differences in sexual attitudes and thoughts among different genders that may lead to different forms of sexual risk. In order to identify these differences, societal influences such as social roles, parenting styles, and sexual education are all examined in regards to gender. Factors such as age and demographics were also considered. Participants consisted of university students who answered online questionnaires regarding sexuality. Results indicate that there exists a mediational relationship between participant gender, sexual cognition, and sexual risk.
Show less - Date Issued
- 2017
- Identifier
- CFH2000183, ucf:45967
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH2000183
- Title
- USER-CENTERED VIRTUAL ENVIRONMENT ASSESSMENT AND DESIGN FOR COGNITIVE REHABILITATION APPLICATIONS.
- Creator
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Fidopiastis, Cali, Rolland, Jannick, University of Central Florida
- Abstract / Description
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Virtual environment (VE) design for cognitive rehabilitation necessitates a new methodology to ensure the validity of the resulting rehabilitation assessment. We propose that benchmarking the VE system technology utilizing a user-centered approach should precede the VE construction. Further, user performance baselines should be measured throughout testing as a control for adaptive effects that may confound the metrics chosen to evaluate the rehabilitation treatment. To support these claims we...
Show moreVirtual environment (VE) design for cognitive rehabilitation necessitates a new methodology to ensure the validity of the resulting rehabilitation assessment. We propose that benchmarking the VE system technology utilizing a user-centered approach should precede the VE construction. Further, user performance baselines should be measured throughout testing as a control for adaptive effects that may confound the metrics chosen to evaluate the rehabilitation treatment. To support these claims we present data obtained from two modules of a user-centered head-mounted display (HMD) assessment battery, specifically resolution visual acuity and stereoacuity. Resolution visual acuity and stereoacuity assessments provide information about the image quality achieved by an HMD based upon its unique system parameters. When applying a user-centered approach, we were able to quantify limitations in the VE system components (e.g., low microdisplay resolution) and separately point to user characteristics (e.g., changes in dark focus) that may introduce error in the evaluation of VE based rehabilitation protocols. Based on these results, we provide guidelines for calibrating and benchmarking HMDs. In addition, we discuss potential extensions of the assessment to address higher level usability issues. We intend to test the proposed framework within the Human Experience Modeler (HEM), a testbed created at the University of Central Florida to evaluate technologies that may enhance cognitive rehabilitation effectiveness. Preliminary results of a feasibility pilot study conducted with a memory impaired participant showed that the HEM provides the control and repeatability needed to conduct such technology comparisons. Further, the HEM affords the opportunity to integrate new brain imaging technologies (i.e., functional Near Infrared Imaging) to evaluate brain plasticity associated with VE based cognitive rehabilitation.
Show less - Date Issued
- 2006
- Identifier
- CFE0001203, ucf:46946
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001203
- Title
- IMMEDIATE VERSUS DELAYED FEEDBACK IN SIMULATION BASED TRAINING: MATCHING FEEDBACK DELIVERY TIMING TO THE COGNITIVE DEMANDS OF THE TRAINING EXERCISE.
- Creator
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Bolton, Amy, Bowers, Clint, University of Central Florida
- Abstract / Description
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Optimal delivery of instruction is both critical and challenging in dynamic, scenario-based training (SBT) computer simulations such as those used by the military. Tasks that human instructors must perform during these sorts of simulated training exercises can impose a heavy burden on them. Partially due to advances in the state-of-the-art in training technology and partially due to the military's desire to reduce the number of personnel required, it may be possible to support functions...
Show moreOptimal delivery of instruction is both critical and challenging in dynamic, scenario-based training (SBT) computer simulations such as those used by the military. Tasks that human instructors must perform during these sorts of simulated training exercises can impose a heavy burden on them. Partially due to advances in the state-of-the-art in training technology and partially due to the military's desire to reduce the number of personnel required, it may be possible to support functions that overburdened instructors perform by automating much of the SBT process in a computer simulation. Unfortunately though, after more than 50 years of literature documenting research conducted in the area of training interventions, few empirically-supported guidelines have emerged to direct the choice and implementation of effective, automated training interventions. The current study sought to provide empirical guidance for the optimal timing of feedback delivery (i.e., immediate vs. delayed) in a dynamic, SBT computer simulation. The premise of the investigation was that the demand for overall cognitive resources during the training exercise would prescribe the proper timing of feedback delivery. To test the hypotheses, 120 volunteers were randomly assigned to 10 experimental conditions. After familiarization on the experimental testbed, participants completed a total of seven, 10-minute scenarios, which were divided across two training phases. During each training phase participants would receive either immediate or delayed feedback and would perform either high or low cognitive load scenarios. Four subtask measures were recorded during test scenarios as well as subjective reports of mental demand, temporal demand and frustration. Instructional efficiency ratios were computed using both objective performance data and subjective reports of mental demand. A series of planned comparisons were conducted to investigate the training effectiveness of differing scenario cognitive loads (low vs. high), timing of feedback delivery (immediate vs. delayed), and sequencing the timing of feedback delivery and the cognitive load of the scenario. In fact, the data did not support the hypotheses. Therefore, post hoc, exploratory data analyses were performed to determine if there were trends in the data that would inform future investigations. The results for these analyses are discussed with suggested directions for future research.
Show less - Date Issued
- 2006
- Identifier
- CFE0001223, ucf:46935
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001223
