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- Title
- DEINDIVIDUATION OF DRIVERS: IS EVERYONE ELSE A BAD DRIVER?.
- Creator
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MacArthur, Keith, Hancock, Peter, University of Central Florida
- Abstract / Description
-
Deindividuation is a psychological phenomenon that occurs when a given environment reduces the "individuality" or identifiability of a person. These environments may cause a psychological reduction in self-consciousness, potentially leading to violations of sociocultural norms (Festinger, Pepitone, & Newcomb, 1952; Singer, Brush, & Lublin, 1965). The present research sought to empirically test deindividuation theory among automobile drivers utilizing the anonymizing factor of observation....
Show moreDeindividuation is a psychological phenomenon that occurs when a given environment reduces the "individuality" or identifiability of a person. These environments may cause a psychological reduction in self-consciousness, potentially leading to violations of sociocultural norms (Festinger, Pepitone, & Newcomb, 1952; Singer, Brush, & Lublin, 1965). The present research sought to empirically test deindividuation theory among automobile drivers utilizing the anonymizing factor of observation. Participants (N = 31) used a driving simulator and were either in the observed condition or an unobserved condition. Analysis of driving data did not reveal significant results, however self-report data had some interesting trends. Though limited in scope, this research begins to shed light on deindividuation of drivers and may provide a foundation for future research.
Show less - Date Issued
- 2014
- Identifier
- CFH0004644, ucf:45325
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004644
- Title
- LEARNING AFRICAN-AMERICAN HISTORY IN A SYNTHETIC LEARNING ENVIRONMENT.
- Creator
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Greenwood-Ericksen, Adams, Hancock, Peter, University of Central Florida
- Abstract / Description
-
Synthetic Learning Environments (SLEs) represent a hybrid of simulations and games, and in addition to their pedagogical content, rely on elements of story and interactivity to drive engagement with the learning material. The present work examined the differential impact of varying levels of story and interactivity on learning. The 2x2 between subjects design tested learning and retention among 4 different groups of participants, each receiving one of the 4 possible combinations of low and...
Show moreSynthetic Learning Environments (SLEs) represent a hybrid of simulations and games, and in addition to their pedagogical content, rely on elements of story and interactivity to drive engagement with the learning material. The present work examined the differential impact of varying levels of story and interactivity on learning. The 2x2 between subjects design tested learning and retention among 4 different groups of participants, each receiving one of the 4 possible combinations of low and high levels of story and interactivity. Objective assessments of participant performance yielded the unexpected finding that learners using the SLE performed more poorly than any other learning group, including the gold-standard baseline. This result is made even more surprising by the finding that participants rated their enjoyment of and performance in that condition highest among the four conditions in the experiment. This apparent example of metacognitive bias has important implications for understanding how affect, narrative structure, and interactivity impact learning tasks, particularly in synthetic learning environments.
Show less - Date Issued
- 2008
- Identifier
- CFE0002087, ucf:47580
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002087
- Title
- INVESTIGATING THE EFFECTS OF TACTILE STRESS ON A MILITARY TOUNIQUET APPLICATION TASK.
- Creator
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Nayeem, Razia, Hancock, Peter, University of Central Florida
- Abstract / Description
-
In combat, soldiers encounter stress from multiple sources including loss of sleep, extremely high levels of physical and psychological discomfort, extended periods of increased vigilance, and intense danger. Therefore, it is imperative to train such personnel on how to cope with these stressors. One way to do this is to include stressors in different forms of training to acclimate soldiers to the subsequent stress of combat. Due to their advantages, tactile trainers are being investigated...
Show moreIn combat, soldiers encounter stress from multiple sources including loss of sleep, extremely high levels of physical and psychological discomfort, extended periods of increased vigilance, and intense danger. Therefore, it is imperative to train such personnel on how to cope with these stressors. One way to do this is to include stressors in different forms of training to acclimate soldiers to the subsequent stress of combat. Due to their advantages, tactile trainers are being investigated increasingly for the use of training Army medics in this context. The present work examines how vibrating tactile sensors, or tactors, can be used as surrogate sources of stress on an operator performing a simulated medical task. This work also examines how this "optimal" configuration interacts with other types of stress, such as noise and time pressure. The outcome findings support the hypotheses that configurations placed on sensitive body areas are more stressful than those placed on more benign body locations in terms of worse task performance on a tourniquet application task. In terms of application times, the same trends persist in terms of proper application, subjective stress and subjective workload, as well as a secondary monitoring task, in terms of response times, accuracy, and time estimation. Additionally, findings supported hypotheses that the stress responses experienced order tactile stress alone is compounded when other types of stress are employed, both on the primary and secondary tasks. These results have implications for training, such that if stressors are employed in training, performance decrements might be lessened during actual task performance; they can be generalized to not only combat medics, but other military specialties and civilian jobs that incur vibration, auditory stress, and time pressure while engaged in performance.
Show less - Date Issued
- 2008
- Identifier
- CFE0002028, ucf:47612
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002028
- Title
- CROSS-MODAL EFFECTS IN TACTILE AND VISUAL SIGNALING.
- Creator
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Merlo, James, Hancock, Peter, University of Central Florida
- Abstract / Description
-
Using a wearable tactile display three experiments were conducted in which tactile messages were created emulating five standard US Army and Marine arm and hand signals for the military commands, namely: "Attention", "Halt", "Rally", "Move Out", and "Nuclear Biological or Chemical event (NBC)". Response times and accuracy rates were collected for novices responding to visual and tactile representations of these messages, which were displayed either alone or together in congruent or...
Show moreUsing a wearable tactile display three experiments were conducted in which tactile messages were created emulating five standard US Army and Marine arm and hand signals for the military commands, namely: "Attention", "Halt", "Rally", "Move Out", and "Nuclear Biological or Chemical event (NBC)". Response times and accuracy rates were collected for novices responding to visual and tactile representations of these messages, which were displayed either alone or together in congruent or incongruent combinations. Results indicated synergistic effects for concurrent, congruent message presentations showing superior response times when compared to individual presentations in either modality alone. This effect was mediated by participant strategy. Accuracy similarly improved when both the tactile and visual presentation were concurrently displayed as opposed to separately. In a low workload condition, participants could largely attend to a particular modality, with little interference from competing signals. If participants were not given instructions as to which modality to attend to, participants chose that modality which was received first. Lastly, initial learning and subsequent training of intuitive tactile signals occurred rapidly with large gains in performance in short training periods. These results confirm the promise for tactile messages to augment visual messaging in challenging and stressful environments particularly when visual messaging is maybe preferred but is not always feasible or possible.
Show less - Date Issued
- 2008
- Identifier
- CFE0002035, ucf:47598
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002035
- Title
- FRIEND/FOE IDENTIFICATION ACCURACY AND SHOOTING PERFORMANCE: EFFECTS OF PRIOR TASK LOADING AND TIME PRESSURE.
- Creator
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Burke, Kelly, Hancock, Peter, University of Central Florida
- Abstract / Description
-
The current dismounted soldier and the soldier of the future will be loaded' with more information processing tasks while they perform shooting tasks. It is conceivable that some increased level of cognitive tasking may be performed simultaneously with required shooting tasks. The effect of cognitive load on shooting performance has been previously examined (Scribner and Harper, 2001). This study concentrated on the effect of various cognitive workload demands on a friend-foe...
Show moreThe current dismounted soldier and the soldier of the future will be loaded' with more information processing tasks while they perform shooting tasks. It is conceivable that some increased level of cognitive tasking may be performed simultaneously with required shooting tasks. The effect of cognitive load on shooting performance has been previously examined (Scribner and Harper, 2001). This study concentrated on the effect of various cognitive workload demands on a friend-foe discrimination shooting task in a single- and dual-task scenario. In light of this, it is imperative that the soldier not be overburdened mentally, which may result in decreased survivability and lethality. Specifically, this study was designed to examine the ability of the soldier to perform friend-foe target discrimination and shooting accuracy, with varying target exposure times, friendly target signatures, and varying cognitive load demands (working memory recall task). Using the Small Arms Simulator Testbed (SAST) we examined the effects of manipulations of working memory load and sustained information transfer, on shooting performance (as measured by target acquisition and friend/foe discrimination indices). Additionally, we investigated subjective measures of workload and stress. A secondary task, administered aurally, was given to subjects to attend to while they performed shooting (friend/foe discrimination task) scenarios: working memory recall task. Each type of task consisted of three levels of difficulty. Analysis of variance revealed significant differences for the memory recall task during shooting and non-shooting conditions. Furthermore, results showed that workload increased as a function of task demand, with associated decreases in shooting performance.
Show less - Date Issued
- 2007
- Identifier
- CFE0001681, ucf:47212
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001681
- Title
- EFFECTS OF VOLUNTARY CONTROL ON PERFORMANCE RESPONSE UNDER STRESS.
- Creator
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Morris, Christina Shawn, Hancock, Peter A., University of Central Florida
- Abstract / Description
-
Recent stressful environments within military and non-military domains are producing a new challenge for the lab-based study of stress on task performance, one that requires knowledge of underlying cognitive-motivational and goal orientation factors. Results of recent stress on task performance research traditionally employ metaphorical explanations (i.e., resource theory) in order to rapidly apply stimulus-response outcomes to the real world counterparts. This dissertation provides an...
Show moreRecent stressful environments within military and non-military domains are producing a new challenge for the lab-based study of stress on task performance, one that requires knowledge of underlying cognitive-motivational and goal orientation factors. Results of recent stress on task performance research traditionally employ metaphorical explanations (i.e., resource theory) in order to rapidly apply stimulus-response outcomes to the real world counterparts. This dissertation provides an alternative perspective about these metaphorical, or black box, interpretations and reveals how they may be confounded with respect to the intended real world counterpart. To examine how voluntary human control can influence traditional stress/no-stress research findings, traditional as well as exploratory paradigms were presented. Both noise and time pressure conditions produced significant differences between experimental and control groups on visual discrimination. However, when analogous cash payment-contingency conditions were employed, the traditional stress/no-stress findings were not evident. In addition, a second experiment revealed that this trend of differences (and non-differences) held consistently over 30 minutes of interrupted task performance time. This study indicates the importance of developing more diagnostic measures that include assessments of how the differences between participants' and the generalized operators' goals and motivations may alter results in stressful task environments.
Show less - Date Issued
- 2004
- Identifier
- CFE0000019, ucf:46134
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000019
- Title
- TECHNIQUES FOR ASSESSING AND IMPROVING PERFORMANCE IN NAVIGATION AND WAYFINDING USING MOBILE AUGMENTED REALITY.
- Creator
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Goldiez, Brian, Hancock, Peter, University of Central Florida
- Abstract / Description
-
Augmented reality is a field of technology in which the real world is overlaid with additional information from a computer generated display. Enhancements to augmented reality technology presently support limited mobility which is expected to increase in the future to provide much greater real world functionality. This work reports on a set of experiments that investigate performance in search and rescue navigating tasks using augmented reality. Augmentation consisted of a spatially and...
Show moreAugmented reality is a field of technology in which the real world is overlaid with additional information from a computer generated display. Enhancements to augmented reality technology presently support limited mobility which is expected to increase in the future to provide much greater real world functionality. This work reports on a set of experiments that investigate performance in search and rescue navigating tasks using augmented reality. Augmentation consisted of a spatially and temporally registered map of a maze that was overlaid onto a real world maze. Participants were required to traverse the maze, answer spatially oriented questions in the maze, acquire a target object, and exit. Pre and post hoc questionnaires were administered. Time and accuracy data from one hundred twenty participants were collected across six treatments. The between subject treatments, which had an equal number of male and female participants, were a control condition with only a compass, a control condition with a paper map available prior to maze traversal and four experimental conditions consisting of combinations of egocentric and exocentric maps, and a continuously on and on demand map display. Data collected from each participant consisted of time to traverse the maze, percent of the maze covered, estimations of euclidian distance and direction, estimations of cardinal direction, and spatial recall. Data was also collected via pre and post hoc questionnaires. Results indicate that best performance with respect to time was in the control condition with a map. The small size of the maze could have facilitated this result through route memorization. Augmented reality can offer enhancement to performance as navigational tasks become more complex and saturate working memory. Augmented reality showed best performance in accuracy by facilitating participants' coverage of the maze. Exocentric maps generally exhibited better performance than egocentric maps. On demand displays also generally resulted in better performance than continuously on displays. Gender differences also were evident with males exhibiting better performance than females. Participants reporting an initial tendency to not rotate maps exhibited better performance than those reporting a tendency to rotate maps. Enhancements being made to augmented reality and related technologies will result in more features, improved form factor for users, and improved performance in the future. Guidelines provided in this work seek to ensure augmented reality systems continue to progress in enhancing performance
Show less - Date Issued
- 2004
- Identifier
- CFE0000177, ucf:46157
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000177
- Title
- AN HEDONOMIC EVALUATION OF PLEASURABLE HUMAN-TECHNOLOGY EXPERIENCE: THE EFFECT OF EXPOSURE AND AESTHETICS ON THE EXPERIENCE OF FLOW.
- Creator
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Murphy, Lauren, Hancock, Peter, University of Central Florida
- Abstract / Description
-
A framework was developed called the Extended Hedonomic Hierarchy (EHH) that provides a basis for evaluating pleasurable human-system experience. Results from a number of experiments within this framework that evaluated specific dimensions of the framework are reported. The 'Exposure' component of the EHH framework and hedonics of the system were investigated to see how changes would affect other dimensions, such as the occurrence of flow, the mode of interaction, and the needs of the user....
Show moreA framework was developed called the Extended Hedonomic Hierarchy (EHH) that provides a basis for evaluating pleasurable human-system experience. Results from a number of experiments within this framework that evaluated specific dimensions of the framework are reported. The 'Exposure' component of the EHH framework and hedonics of the system were investigated to see how changes would affect other dimensions, such as the occurrence of flow, the mode of interaction, and the needs of the user. Simulations and video games were used to investigate how repeated exposure affects flow, interaction mode, and the user needs. The Kansei Engineering method was used to measure user needs and investigate the effect of different hedonic properties of the system on user needs and flow. Findings reveal that: (a) pleasurable human-system experience increases linearly with repeated exposure to the technology of interest; (b) an habituation effect of flow mediated by day; (c) motivation to satisfy human need for technology is hierarchically structured and contributes to pleasurable human-system experience; (d) interactivity is hierarchically structured and seamless mode of interaction is a behavioral outcome of pleasurable human-system experience; (e) there are individual differences among users that affect the likelihood of experiencing pleasurable human-system interaction; (f) performance is positively correlated to flow and (g) the method of kansei engineering provides data from which informed decisions about design can be made and empirical research can be conducted. Suggestions for (a) making Hedonomics a reality in industry, the workplace, and in the field of Human Factors, (b) future research directions for Hedonomics, and (c) principles and guidelines for the practice of Hedonomics are discussed.
Show less - Date Issued
- 2005
- Identifier
- CFE0000875, ucf:46650
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000875
- Title
- INDIVIDUAL PREFERENCES IN THE USE OF AUTOMATION.
- Creator
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Thropp, Jennifer, Hancock, Peter, University of Central Florida
- Abstract / Description
-
As system automation increases and evolves, the intervention of the supervising operator becomes ever less frequent but ever more crucial. The adaptive automation approach is one in which control of tasks dynamically shifts between humans and machines, being an alternative to traditional static allocation in which task control is assigned during system design and subsequently remains unchanged during operations. It is proposed that adaptive allocation should adjust to the individual operators...
Show moreAs system automation increases and evolves, the intervention of the supervising operator becomes ever less frequent but ever more crucial. The adaptive automation approach is one in which control of tasks dynamically shifts between humans and machines, being an alternative to traditional static allocation in which task control is assigned during system design and subsequently remains unchanged during operations. It is proposed that adaptive allocation should adjust to the individual operators' characteristics in order to improve performance, avoid errors, and enhance safety. The roles of three individual difference variables relevant to adaptive automation are described: attentional control, desirability of control, and trait anxiety. It was hypothesized that these traits contribute to the level of performance for target detection tasks for different levels of difficulty as well as preferences for different levels of automation. The operators' level of attentional control was inversely proportional to automation level preferences, although few objective performance changes were observed. The effects of sensory modality were also assessed, and auditory signal detection was superior to visual signal detection. As a result, the following implications have been proposed: operators generally preferred either low or high automation while neglecting the intermediary level; preferences and needs for automation may not be congruent; and there may be a conservative response bias associated with high attentional control, notably in the auditory modality.
Show less - Date Issued
- 2006
- Identifier
- CFE0001096, ucf:46771
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001096
- Title
- WARNING COMPLIANCE: EFFECTS OF STRESS AND WORKING MEMORY.
- Creator
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Helmick-Rich, Jessica, Hancock, Peter A, University of Central Florida
- Abstract / Description
-
ABSTRACT This study investigated the effects of cross-modality warning presentation and retention in a dual-task paradigm in a simulated military environment under various task-induced stress levels. It was also intended to determine what role working memory played in the mode of warning presentation that resulted in the highest retention and subsequent compliance. An all within participant design was created in order to determine if scores on working memory span tasks predicted performance...
Show moreABSTRACT This study investigated the effects of cross-modality warning presentation and retention in a dual-task paradigm in a simulated military environment under various task-induced stress levels. It was also intended to determine what role working memory played in the mode of warning presentation that resulted in the highest retention and subsequent compliance. An all within participant design was created in order to determine if scores on working memory span tasks predicted performance across the varying forms of warning presentation. Furthermore, task-induced stress levels were varied over the course of the experiment to identify if workload transitions affected performance. Results revealed that when the presentation format and the response format matched (e.g., verbal-verbal), behavioral compliance was greater then when presentation and response format were mismatched (e.g., verbal-pictorial). Thus, it is not necessarily the presentation type that affects compliance, but the combination of presentation and response mode. Analysis also revealed that the pictorial-pictorial warning combination resulted in greater behavioral compliance compared to verbal-verbal or written-written combinations. The format of warning presentation did not affect performance on the operational tasks as predicted. Thus, the visual/spatial operational task, regardless of its complexity was not interrupted in timesharing with intra-modal warning presentations or cross-modal time-sharing. As predicted, task based stress affected the WCCOM task in all experimental procedures. Results further revealed that as task demand increased, performance on the WCCOM task decreased. Task demand did affect the operational tasks, the shooting and the navigation tasks. The shooting task, which was less complex than the navigation task was not affected by lower levels of task demand, but at the greatest level of demand (eight warnings) performance in the operational task, degraded. Degradations in performance on the more complex task, the navigation task, materialized at a moderate level of task demand (four warnings). For subjective ratings, task demand did affect workload ratings. As the task demand increased, the subjective workload ratings also increased, revealing a true association between workload and subjective ratings. The working memory separability hypothesis was supported by the working memory span tasks, but consequently they were not predictive of the warning presentation format.
Show less - Date Issued
- 2005
- Identifier
- CFE0000725, ucf:46624
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000725
- Title
- TIME ESTIMATION AND HAND PREFERENCE.
- Creator
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Rodriguez, Maria, Hancock, Peter, University of Central Florida
- Abstract / Description
-
This work examines the effect of participants' gender and handedness on the perception of short intervals of time. The time estimation task consisted of an empty production procedure with forty trials at each of four intervals of one, three, seven, and twenty seconds. The four target intervals represent a natural logarithmic progression and a series that bracket important temporal thresholds. The order of presentation of those intervals was randomized across participants but yoked across the...
Show moreThis work examines the effect of participants' gender and handedness on the perception of short intervals of time. The time estimation task consisted of an empty production procedure with forty trials at each of four intervals of one, three, seven, and twenty seconds. The four target intervals represent a natural logarithmic progression and a series that bracket important temporal thresholds. The order of presentation of those intervals was randomized across participants but yoked across the sexes in each of the respective dominant hand groups. The two between-subject factors, with two levels each, were sex and handedness. Participants produced forty estimates at each of the required intervals, which was the first within-subject factor, estimated interval being the other. T-tests were conducted on the dependent measures, the time estimates in terms of their variability and their central tendency with respect to the target duration. If handedness plays a significant role in timing, this may indicate differences between hemispheric functioning as a possible causal mechanism. If there is cerebral asymmetry in time perception, namely if one hemisphere is more competent regarding time perception, accuracy in judging duration should be higher for the contralateral hand. The results of the present study indicated that there are no significant differences in performance between right-handed and left-handed participants, or between male and female participants, in the estimation of short intervals of time.
Show less - Date Issued
- 2005
- Identifier
- CFE0000768, ucf:46572
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000768
- Title
- THE EFFECTS OF SECONDARY TASK DEMANDON THE ASSESSMENT OF THREAT.
- Creator
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Ganey, Harriss, Hancock, Peter, University of Central Florida
- Abstract / Description
-
Threat perception is an important issue in today's world. As the line between hostile and non-hostile entities is blurred, it becomes more important for individuals to clearly distinguish between those who would present danger and those who would not. This series of experiments tested whether observers engaged in a dual-task paradigm perceived a greater amount of threat from target stimuli than they did when they were engaged in the threat task alone. The first experiment revealed that...
Show moreThreat perception is an important issue in today's world. As the line between hostile and non-hostile entities is blurred, it becomes more important for individuals to clearly distinguish between those who would present danger and those who would not. This series of experiments tested whether observers engaged in a dual-task paradigm perceived a greater amount of threat from target stimuli than they did when they were engaged in the threat task alone. The first experiment revealed that observers rated targets as more threatening when they were engaged in the additional task than when they only rated the targets themselves. Response time to the targets was also slower when a secondary task was present. This difference was more pronounced when the secondary task was presented via the auditory channel. Participants also rated overall workload higher when performing a secondary task, with the highest ratings being associated with the dual-task auditory condition. In the second experiment, the design crossed sensory modality with the presence or non-presence of threat. Inter-stimulus interval was also manipulated. The presence of threat was associated with faster response times, though when both tasks had threat components, response time was not the fastest. Additionally, when images came first in the stimulus pairs, observers were slower to respond to the first stimulus than when the sounds were presented first. Results supported the conclusion that additional task loading can affect the perception of threat. The modality of the additional task seems to also play a role in threat assessment performance. Results also led to the conclusion that threat-related visual stimuli are more challenging to process than threat-related auditory stimuli. Future research can now investigate how different types of tasks affect the threat perception task. Implications for better training of soldiers and for the design of automated systems are presented.
Show less - Date Issued
- 2006
- Identifier
- CFE0001156, ucf:46864
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0001156
- Title
- THE ROAD RAGE AND AGGRESSIVE DRIVING DICHOTOMY: PERSONALITY AND ATTRIBUTION FACTORS IN DRIVER AGGRESSION.
- Creator
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Schafer, Kathryn, Hancock, Peter, University of Central Florida
- Abstract / Description
-
Aggressive driving is not clearly and consistently defined in the literature, neither in terms of the specific behaviors chosen for inclusion nor the degree to which the emotional state of the driver is taken into account. Principally, the aim of this current research is to determine the extent to which aggressive driving and road rage overlap. This will be accomplished primarily by applying two well-supported dichotomies in aggression research: hostile/instrumental and impulsive/premeditated...
Show moreAggressive driving is not clearly and consistently defined in the literature, neither in terms of the specific behaviors chosen for inclusion nor the degree to which the emotional state of the driver is taken into account. Principally, the aim of this current research is to determine the extent to which aggressive driving and road rage overlap. This will be accomplished primarily by applying two well-supported dichotomies in aggression research: hostile/instrumental and impulsive/premeditated. Relevant personality traits will also be measured to help discern the aggressive driving- road rage overlap and to explore secondary areas of interest, such as sex and age differences in driver aggression.
Show less - Date Issued
- 2015
- Identifier
- CFH0004850, ucf:45445
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004850
- Title
- AN EXAMINATION OF INDIVIDUAL DIFFERENCES IN THE CONTEXT OF PERFORMANCE ON A FEEDBACK V. NO FEEDBACK VIGILANCE TASK.
- Creator
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Walker, Jenny A, Hancock, Peter A., University of Central Florida
- Abstract / Description
-
When a task is boring, repetitive, and takes place over a long period of time, individuals have a propensity to experience a gradual decline in performance known as the vigilance decrement (Mackworth, 1948). This negative trend is consistent across most populations (Davies & Parasuraman, 1982), though slight variations can occur based on the characteristics of the task, as well as characteristics of the human performing it. However, despite the many differences between these tasks, most...
Show moreWhen a task is boring, repetitive, and takes place over a long period of time, individuals have a propensity to experience a gradual decline in performance known as the vigilance decrement (Mackworth, 1948). This negative trend is consistent across most populations (Davies & Parasuraman, 1982), though slight variations can occur based on the characteristics of the task, as well as characteristics of the human performing it. However, despite the many differences between these tasks, most studies are similar in the sense that, more often than not, participants are provided with immediate feedback on their performance throughout most laboratory trials. Yet, in applied settings, feedback is not always feasible. In fact, in many circumstances, if real-time feedback such as this was always available, then the role of the human component of the system may be brought into question. This also may be concerning for validity of laboratory studies which utilize feedback. Therefore, one goal of this experiment, as well as future work, is to continue to assess the importance of feedback by examining differences in performance on a vigilance task during which feedback may or may not be present. In addition to recent work relating to feedback, many current studies have also examined individual differences in the context of vigilance. Interestingly, it has been shown that performance accuracy often correlates to measures of higher order processing abilities including inhibition, which a component of working memory (Smallwood & Schooler, 2006). Additionally, when working memory load is increased, vigilant behavior also declines (Helton & Russell, 2011). Therefore, an additional goal of this study was to determine how performance relates to individual differences in higher order cognitive processing, such as working memory capacity and need for cognition. It was found that feedback does significantly improve performance, which is worth considering as issues relating to vigilance decrements are addressed in applied environments. The individual differences measures did not yield any significant results.
Show less - Date Issued
- 2016
- Identifier
- CFH2000051, ucf:45504
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH2000051
- Title
- RELATIONSHIP BETWEEN FORENSIC EXPOSURE AND FORENSIC KNOWLEDGE.
- Creator
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Alves, Giovanna M, Hancock, Peter A., University of Central Florida
- Abstract / Description
-
It has been shown that popular crime television series can have an impact in the behavior and perception of viewers. Forensic evidence, or evidence that is gathered through scientific methods, is often central to the plot of these shows. Exposure to forensic evidence in these shows has impacted the legal system by changing perceptions and opinions towards evidence presented in courtrooms, a consequence termed the CSI effect. A subset of the CSI effect named the Police Chief's Effect refers to...
Show moreIt has been shown that popular crime television series can have an impact in the behavior and perception of viewers. Forensic evidence, or evidence that is gathered through scientific methods, is often central to the plot of these shows. Exposure to forensic evidence in these shows has impacted the legal system by changing perceptions and opinions towards evidence presented in courtrooms, a consequence termed the CSI effect. A subset of the CSI effect named the Police Chief's Effect refers to the ability of criminals to learn about forensic evidence from these shows. Although understudied, the Police Chief's effect has the potential to increase the difficulty of criminal investigations if criminals are better able to plan their actions and conceal evidence. The intent of this thesis is to explore a relationship between forensic techniques portrayed in television and the forensic knowledge an individual obtains from it. Previous studies have looked at the Police Chief's effect in the context of a non-violent crime, even though most of the television shows highlight crime of a violent nature. The present study evaluates the ability of participants to consider forensic evidence when planning a murder, taking into account their crime show viewing history. The results revealed that the overall number of crime shows, percentage of those episodes and involvement in the shows was not associated with forensic evidence. However, a moderate correlation was found between the number of crime shows watched and forensic evidence in female participants.
Show less - Date Issued
- 2019
- Identifier
- CFH2000507, ucf:45666
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH2000507
- Title
- PRE-SCREEN OF TRAITS THAT LEAD TO POST-TRAUMATIC STRESS DISORDER.
- Creator
-
Lee, Krystal, Hancock, Peter, University of Central Florida
- Abstract / Description
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Post-Traumatic Stress Disorder (PTSD) is a disorder that is affecting many lives and families. Since it is believed that over 50% of Americans will experience a traumatic event and 25% will experience multiple traumatic events, PTSD is an issue that cannot be overlooked. Although PTSD is most commonly associated with war victims, the official definition of PTSD was stated in the DSM-IV as "an extreme traumatic stressor involving direct personal experience or that involves actual or threatened...
Show morePost-Traumatic Stress Disorder (PTSD) is a disorder that is affecting many lives and families. Since it is believed that over 50% of Americans will experience a traumatic event and 25% will experience multiple traumatic events, PTSD is an issue that cannot be overlooked. Although PTSD is most commonly associated with war victims, the official definition of PTSD was stated in the DSM-IV as "an extreme traumatic stressor involving direct personal experience or that involves actual or threatened death or serious injury or other threat to one's physical integrity; or witness to an event that involves death, injury, or a threat to the integrity of another person..." This definition shows that PTSD can be generalized to not only war victims but to anyone who has a traumatic experience.This study shows 82% of the participants are likely to experience PTSD if exposed to a traumatic event. This study provides a pre-screen of traits that likely lead to PTSD, in hopes to raise awareness and provide a potential cure and preventative measure in the future. Current forms of treatment include cognitive therapy; however, there is no solution. The usage of simulations such as Virtual Reality Exposure (VRE) could provide both a treatment but also a preventative measure.
Show less - Date Issued
- 2011
- Identifier
- CFH0003850, ucf:44690
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0003850
- Title
- INVESTIGATION OF VISUAL REQUIREMENTS FOR CHANGE DETECTION.
- Creator
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Niederman, Elisabeth, Hancock, Peter, University of Central Florida
- Abstract / Description
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In this study, participants performed a change detection task. Specifically we examined whether participants had to fixate on a difference between two images before they could detect it. Thirty-six participants performed a change detection task in either a 3 minute or a 1.5 minute condition. We found a significant interaction between task duration and fixation type (whether the participant had fixated on the difference in both, one, or neither image). Participants found a greater number of...
Show moreIn this study, participants performed a change detection task. Specifically we examined whether participants had to fixate on a difference between two images before they could detect it. Thirty-six participants performed a change detection task in either a 3 minute or a 1.5 minute condition. We found a significant interaction between task duration and fixation type (whether the participant had fixated on the difference in both, one, or neither image). Participants found a greater number of differences given more time only when they fixated on the difference in both images. The number of differences which were detected by participants with a fixation on only one image or on neither image did not increase with a corresponding increase in time, indicating that some mechanical error may be involved. This suggests that participants need to fixate on a difference before being able to detect it.
Show less - Date Issued
- 2013
- Identifier
- CFH0004500, ucf:45152
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004500
- Title
- GENERATION AND THE GOOGLE EFFECT: TRANSACTIVE MEMORY SYSTEM PREFERENCE ACROSS AGE.
- Creator
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Siler, Jessica, Hancock, Peter, University of Central Florida
- Abstract / Description
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A transactive memory system (TMS) is a means by which people may store information externally; in such a system the task of remembering is offloaded by remembering where information is located, rather than remembering the information itself. As Sparrow et al. (2011) suggest in the article Google Effects on Memory: Cognitive Consequences of Having Information at Our Fingertips, people are beginning to use the internet and computers as a TMS, and this use is changing the way people encounter...
Show moreA transactive memory system (TMS) is a means by which people may store information externally; in such a system the task of remembering is offloaded by remembering where information is located, rather than remembering the information itself. As Sparrow et al. (2011) suggest in the article Google Effects on Memory: Cognitive Consequences of Having Information at Our Fingertips, people are beginning to use the internet and computers as a TMS, and this use is changing the way people encounter and treat information. The purpose of this thesis is to investigate whether preference for TMS type (either with books or with computers) varies across age groups. An interaction between TMS preference and age was hypothesized. Before the onset of the internet age, information was primarily found in books and other print materials whereas now the internet is more frequently used, thus this shift in thinking and habit across generations was expected to emerge in the data. The study yielded a total of 51 participants, 32 from the young age group (ages 18-24) and 19 from the old (ages 61-81). A modified Stroop task and question blocks (for priming purposes) were employed to examine whether people are prone to think of book- or computer-related sources when in search of information. Also, a "Look up or Learn" tendencies survey was used to better understand how people decide whether certain information should be learned or left to be "looked up" later (Yacci & Rosanski, 2012). The mixed ANOVA did not reveal main effects for question difficulty or TMS type, nor was an interaction with age found. The results were not consistent with those of Sparrow et al. (2011) and did not show significance for TMS preference. Future studies should continue to examine the Google effect and TMS preference, as it bears important applications for a number of fields.
Show less - Date Issued
- 2013
- Identifier
- CFH0004473, ucf:45118
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004473
- Title
- THE INVESTIGATION OF A POTENTIAL LINK BETWEEN CHRONIC TRAUMATIC ENCEPHALOPATHY AND POSTTRAUMATIC STRESS DISORDER.
- Creator
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Driskell, Lucas, Hancock, Peter, University of Central Florida
- Abstract / Description
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With the advancement of protective gear and medical aid, soldiers are now surviving traumatic experiences that were once fatal. As a result, the prevalence of brain injury and posttraumatic stress disorder in military service members has grown. Those who have obtained brain injury are at risk of developing chronic traumatic encephalopathy, a neurodegenerative syndrome. To date, there is no cure, treatment, or diagnostic method (besides autopsy) for chronic traumatic encephalopathy. Because...
Show moreWith the advancement of protective gear and medical aid, soldiers are now surviving traumatic experiences that were once fatal. As a result, the prevalence of brain injury and posttraumatic stress disorder in military service members has grown. Those who have obtained brain injury are at risk of developing chronic traumatic encephalopathy, a neurodegenerative syndrome. To date, there is no cure, treatment, or diagnostic method (besides autopsy) for chronic traumatic encephalopathy. Because chronic traumatic encephalopathy and posttraumatic stress disorder present many of the same symptoms and have the possibility of deriving from the same traumatic experience, an investigation of a potential link is necessary. This study explores the possibility of chronic traumatic encephalopathy being misdiagnosed as posttraumatic stress disorder. This is done by analyzing the frequency of brain injury along with the comorbidity of posttraumatic stress disorder and brain injury. This thesis also proclaims the need for research that attempts to develop diagnostic criterion and treatment methods for chronic traumatic encephalopathy.
Show less - Date Issued
- 2012
- Identifier
- CFH0004295, ucf:44950
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004295
- Title
- SOCIAL NETWORKING AND USERS: THE INTERACTION OF PERSONALITY AND MOTIVATION FOR FACEBOOK POSTING.
- Creator
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Kessler, Theresa, Hancock, Peter, University of Central Florida
- Abstract / Description
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Facebook is the reigning king of Social Networking Sites (SNSs). Due to Facebook's impact on current culture, researchers have been focused on how it interacts with its members on a variety of issues including well-being, personal identity, personality type, and motivation. While the topics of personality type and motivation have been investigated separately, their possible relationship has not been examined until now. Participants consisted of 415 students from the University of Central...
Show moreFacebook is the reigning king of Social Networking Sites (SNSs). Due to Facebook's impact on current culture, researchers have been focused on how it interacts with its members on a variety of issues including well-being, personal identity, personality type, and motivation. While the topics of personality type and motivation have been investigated separately, their possible relationship has not been examined until now. Participants consisted of 415 students from the University of Central Florida were surveyed with an International Personality Item Pool (IPIP), a Facebook Intensity Survey, and a Facebook Motivation Scale. Results showed that the personality traits of agreeableness, conscientiousness, and emotional stability were positively related to intrinsic and extrinsic motivation to make posts on Facebook, extraversion was found to be related to extrinsic motivation to make posts, and intellect was found to have almost no relationship to motivation. In addition, participants who were higher in the traits of agreeableness, conscientiousness, and emotional stability were more likely to be more intensely involved in Facebook than those who were high in extraversion and intellect. Finally, I found that participants who were more intensely involved in Facebook experienced more motivation to make posts on Facebook.
Show less - Date Issued
- 2013
- Identifier
- CFH0004504, ucf:45213
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004504
