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Psychometric analysis of newly developed virtual reality application
Hurych, Jan ; Hocko Fajnerová, Iveta (advisor) ; Děchtěrenko, Filip (referee)
The thesis deals with the determination of psychometric properties of the scores of the newly developed application "Flies". This application is a serious virtual reality game for cognitive screening. The theoretical part first explains the concept of virtual reality in the context of psychological testing and then presents the advantages and disadvantages of this revolutionary technology. Relevant psychological functions are also mentioned, especially attention, which are important for performing well in the VR application Flies. In the last section, the theory related to ascertaining validity and reliability is presented. The development of this application, including two pilot studies, is described in the practical section. Reliability was ascertained using Bland Altman graphs of Limits of Agreement and correlation coefficients in a test-retest scenario. Evidence for the validity of the application is based primarily on the correlation of the application results with the age of the participants and the patterns of convergence and divergence with other relevant methods. The application scores show relatively low stability between the first administration and the retest, thus test-retest reliability was not proven. However, application validity was proven in a different study with a larger number...
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Psychological aspects of evidence assessment
Hurych, Jan ; Kosek, Jan (advisor) ; Agha, Petr (referee)
Psychological aspects of evidence evaluation: Abstract The diploma thesis focuses on the topic of judging and decision-making within the process of evidence evaluation. Its main goal is to identify and describe cognitive illusions which can have a negative impact on the process of evidence evaluation. The mutual position of psychology and law in also considered within introductory chapters. The decision making of the judges is initially described by theoretical models. Three cognitive illusions that are essential for evidence evaluation are described in the following chapter. It is anchoring heuristic, hindsight bias and confirmation bias. Eventually risks, which these cognitive illusions represent for evidence evaluation, are described and forms of countermeasures are discussed. One chapter of the thesis is devoted to the description of ego depletion, which could pose another limit for the process of evidence evaluation. Ego depletion describes decline of self-control in cases which demand conscious effort. The judges are probably in a risk of ego depletion. This phenomenon can lead to higher vulnerability towards cognitive illusions and stronger tendency to maintain status quo. Possible countermeasures are described and discussed on one hand against anchoring, hindsight and confirmation bias and on the...
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Decision making under condition of sleep deprivation
Hurych, Jan ; Niederlová, Markéta (advisor) ; Polák, Jakub (referee)
The paper concerns itself with the question, which risks are associated with the lack of sleep especially with the ability to make decisions. It analyses a number of processes, which can have an effect on the process of decision-making: vigilance, attention, memory, emotions, divergent and flexible thinking, executive functions and at least but not last also the ability to communicate clearly. Some benefits and risks of routinely available countermeasures are also discussed. The sleep deprivation is associated with a significant number of negative consequences, which can affect the processes mentioned above, thus it can have a detrimental impact on decision-making itself. The commonly available countermeasures are not effective in compensating for all of these consequences, only the sleep in sufficient quality and quantity is. Keywords: Sleep, deprivation, decision making, cognitive functions
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Analysis of gaming community using Soft System Methodology
Hurych, Jan ; Sigmund, Tomáš (advisor) ; Malinová, Ludmila (referee)
This diploma thesis aims to analyse virtual gaming community and it's problems in case of community belonging to EU server of the game called World of Tanks. To solve these problems, Soft System Methodology by P. Checkland, is used. The thesis includes analysis of significance of gaming communities for the gaming industry as a whole. Gaming community is then defined as a soft system. There are 3 problems analysed in the practical part of the thesis using newer version of SSM. One iteration of learning cycle of this methodology is used to solve every single one of the presented problems. Problems are chosen by players using questionnaire. At the end, application of the SSM is evaluated for the domain of gaming communities in general and problems with its application are presented.
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