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Possibilities of preventing the negative influence of cognitive biases on everyday decision making
Tesařová, Monica ; Stehlík, Luděk (advisor) ; Uhlář, Pavel (referee)
This bachelor thesis deals with possibilities of preventing the influence of cognitive biases on our everyday decision making, especially with the negative effect of the anchoring-and-adjustment heuristic on consumer behavior. The first chapter is concerned with human irrationality in decision making, primarily with cognitive biases. Some of the most significant types of cognitive biases that negatively affect our decision making are presented and various approaches trying to explain their origin and nature are introduced subsequently. It continues with a chapter on possibilities of the prevention of cognitive biases where the theory of debiasing is mentioned and an example of a successful debiasing strategy is presented. The last chapter of the theoretical part focuses in detail on one particular type of cognitive bias that arises from using the anchoring-and-adjustment heuristic. The aim of the empirical part of the thesis is then to propose a strategy that will, at least partially, help reducing the negative impact of this bias on our decision making in everyday situations - particularly from the consumer perspective. Another part of this is also an outline for an experimental study that would help verify the effectiveness of the proposed measures. Keywords: heuristics, cognitive biases,...
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Episodic-like memory changes during aging
Čechová, Kateřina ; Vlček, Kamil (advisor) ; Stehlík, Luděk (referee)
The Diploma thesis is concerned with the human episodic-like memory and its changes during the course of healthy ageing. Episodic memory represents a memory of specific events and their spatiotemporal relations, involving conscious retrieval and mental time travel. As a testable analogy in animals, a concept of episodic-like memory has been suggested and defined as a memory of spatiotemporal location of a certain event in the past ("what-where-when"). Firstly, we focused on a methodological comparison of standard psychological tests of episodic memory and a novel non-verbal computer-based Episodic-Like Memory Test (EMT) with several variants of varying difficulty, capable of discerning the memory for pictures, their sequence and position (Vlček et al., 2009). The second goal of our study was to demonstrate the applicability of the concept of episodic-like memory ("what- where-when") as a model in the testing of human episodic memory. Compared with other tests of episodic memory, EMT test does not depend on the verbalization of content. Contrasting the results obtained from EMT and other standard tests was, therefore, of interest. The results from the EMT test were compared across three age cohorts (N = 58; young, middle-aged, aged) of healthy volunteers. In the spatial domain of episodic-like...
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The effect of Gender on Adolescent's theory of mind
Šalapková, Jana ; Kebza, Vladimír (advisor) ; Stehlík, Luděk (referee)
The main aim of this study is to investigate the effect of gender in adolescent Theory of Mind. The term Theory of Mind (TOM) was introduced more than 30 years ago. Most of the TOM studies investigated Theory of Mind among animals, infants, children and clinical patients. Based on literature review, we know that developmental changes do not stop in childhood but continue through adolescence and into adulthood. Evidently there is a lack of studies on Theory of Mind in adolescents, despite the fact that adolescence is a critical stage for social, emotional and relationship skills. One of the variables important for our research is the effect of gender and gender identity. Gender differences are considered one of the least examined aspects of TOM, and further studies are not specifically aimed to gender-related differences. The tests we employed were Reading Mind in the eyes test (revised version, RMET-R) and Bem Sex-Role Inventory (BSRI). Statistical analysis revealed that older adolescents (17- year old) scored significantly higher than younger (16-year old) on the RMET-R test. There were no significant differences between females and males on the RMET-R test performance results. We found no significant effect of gender identity, feminine traits and familiarity with TOM stimuli in relation to RMET-R...
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Cognitive functioning in everyday life in patients with Borderline personality disorder
Krupníková, Hana ; Stehlík, Luděk (referee) ; Niederlová, Markéta (referee)
This thesis focuses on cognitive function in everyday life with an emotionally unstable personality disorder, border type and builds on the thesis, which was defended in 2011. The theoretical part deals with the cognitive functions that have a selective approach in terms of importance within the research project. Chapters on borderline personality disorder contain an overview of the historical development of diagnosis, the diagnosis and further elaborate on diagnostic models of Kernberg and Millon. Both studies link the topics that deal with cognitive functions in individuals with this disorder. In the empirical part, which describes the research project, approaching test methods used. We try to verify the relationship between diagnosed emotionally unstable personality disorder (IPDE questionnaire) and cognitive functions in everyday life using ANT and questionnaires MFQ, CFFQ and MIA in the research and control group. The relationship of cognitive functions and subjective measured depressive symptoms is studied using the BDI-II and MADRS. The research project is complemented by secondary analysis of our research project and Klára Patlichová research project focused on comparing the results of the attention test ANT. This thesis is enhanced by a qualitative part of case studies. Key words:...
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Comparison of alternative version of The Montreal Cognitive Assessment (MoCA-CZ 2) with its basic version (MoCA-CZ 1).
Fayette, Dan ; Kulišťák, Petr (advisor) ; Stehlík, Luděk (referee)
The thesis discusses screening psychodiagnostics with special attention given to amnestic mild cognitive impairment and Alzheimer's disease. The theoretical part describes the concepts of healthy aging and the disorders of cognitive functions. It provides an overview of the screening methods most frequently used in the Czech Republic and the description of MoCA test. It also briefly outlines the issues of retesting in psychodiagnostics. The objective of the empirical part of the work was to verify the psychometric characteristics of the Czech alternative version MoCA-CZ and to evaluate whether it is possible to use this test in practice. The evaluation also includes a comparison of the new version with the already established standard version of MoCA-CZ test. We assigned standard and alternative versions of MoCA-CZ in a 2-month interval to 59 healthy volunteers, 35 patients with mild cognitive impairment and 41 patients with dementia resulting from Alzheimer's disease. We found a strong correlation between alternative and standard version of MoCA-CZ test. We confirmed statistically significant differences in the average scores between individual research groups in both versions of the test. We proved that the alternative version MoCA-CZ 2 is reliable. And we demonstrated that the administration and...
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The use of psycho psychophysiological methods in objectivization of mental workload
Kloudová, Gabriela ; Stehlík, Luděk (referee) ; Niederlová, Markéta (referee)
This thesis is focused on possible methods of objectivization of mental workload that are on psychophysiological basis and can be used in area of military pilots. The theoretical part is based on definition of the term mental workload, its related theories, the strategies of coping with stressful situations and possible methods of objectivization of mental workload. This part also provides an overview of demanding tasks occuring during flight activity and specifics of the job of military pilots. The research is based on theoretical models and previous researches and the aim is to analyze possibilities of testing the mental workload using psychophysiological methods. This hypothesis was empirically verified by experimental study conducted in tactical flight simulator designed for a training on fighter planes. The mental workload was investigated by physiological data and psychological questionnaires. The results are showing significant difference between resting heart rate and a heart rate during flight situation so we can assume that physiological parameters are good indicator of mental workload. Further analysis refers to the most stressful and most difficult situations that appeared during tactical combat mission. There was a significant correlation between personality, resting heart rate and...
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Subjective speed of time flow
Slavíková, Lenka ; Bahbouh, Radvan (advisor) ; Stehlík, Luděk (referee)
The following thesis deals with psychological time, duration of time and primarily the subjective speed of time. In the theoretical part the theories of time perception and the theories of time acceleration with age are presented. In the empirical part a hypothesis about the acceleration of subjective time with age is tested. In contrast to popularly held view that time passes faster with increasing age, empirical data do not support this assumption. A questionnaire mapping the impressions of the speed of time was administered to a sample of 101 respondents from three age groups (adolescents, adults and seniors). The newly developed Subjective time speed inventory (ISRČ) and Zimbardo time perspective inventory (ZTPI) were also included. Most respondents agree with the statement that time seems to pass faster now than before and that time seems to pass fast. Testing the main research hypothesis about the acceleration of time with age, however, finds no significant differences in perceived speed of time along with age (Kruskal-Wallis test). Significant difference in relation to age was found only in the speed measurement by means of ISRČ (Kruskal-Wallis test). Adolescents achieved significantly higher raw score than adults and seniors by means of ISRČ (Mann-Whitney U test). This result implies that...
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Support of child cognitive development in home and school environment with focus on mnemonics
Kytka, Igor ; Morávková Krejčová, Lenka (advisor) ; Stehlík, Luděk (referee)
This thesis entitled Support of child cognitive development in home and school environment with focus on mnemonics outlines the theories of the cognitive development of preschool and school age. Also includes a summary of characteristics of these age periods. This thesis also includes the presentation of selected approaches to cognitive development, such as conceptual learning, or Learning Power, both from a theoretical as well as practical perspective. The practical part of this work is based on the application of training Loci technique and determining their impact on improving cognitive functions in children at primary school, aged 6-12 years. Keywords: cognitive development, cognitive functions, mnemonics, programs for enhancing cognitive functions, preschool age, school age, education, learning
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Memory for nonverbal material in patients with mild cognitive impairment
Sedláková, Kateřina ; Kulišťák, Petr (advisor) ; Stehlík, Luděk (referee)
Patients with amnestic type of mild cognitive impairment (aMCI) are diagnosed mainly on the basis of performance in verbal memory tests. This thesis deals with the use of a nonverbal test called the Brief Visuospatial Memory Test-Revised (BVMT-R) for the diagnosis of mild cognitive impairment (MCI). This research compared the performance of patients with clinical diagnosis of MCI (N=79) using the BVMT-R with the performance of these patients using the Auditory Verbal Learning Test (AVLT), the AVLT being a validated instrument for differentiating aMCI patients from healthy control patients. Both tests follow a similar design paradigm, but they differ in the type of stimuli measured: the BVMT-R tests memory for nonverbal material and the AVLT tests for verbal material. Results showed that there is a moderate correlation between scores (total score, delayed recall score) of the BVMT-R and equivalent scores of the AVLT. Further analyses of performance of MCI patients in both tests (in total scores and delayed recall scores) identified that there was a proportion of patients tested using the BVMT-R with memory impairment that did not show any memory impairment using the AVLT. Our findings indicate a favorable diagnostic potential of BVMT-R in the diagnostics of mild cognitive impairment. Keywords:...
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The relationship between subjective perception of cognitive impairment and objective neuropsychological performance
Marková, Hana ; Kulišťák, Petr (advisor) ; Stehlík, Luděk (referee)
This diploma thesis deals with the topic of Subjective memory complaints (SMC) in elderly population in relation to early diagnostics of Alzheimer's Disease (AD). The term of SMC describes patients with subjective perception of cognitive impairment which is not objectivized during a complex neuropsychological assessment. The character of their subjective complaints has not been thoroughly examined, despite their increased risk to develop cognitive impairment, most likely due to AD (Reisberg, et al., 2008). The aim of this cross-sectional study was to verify the clinical significance of the concept of SMC and to characterize subjective complaints in SMC in comparison to patients with cognitive deficit at the stage of amnestic mild cognitive impairment (aMCI) and in comparison to cognitively healthy elderly (HE). SMC and aMCI patients did not differ in the amount of subjective complaints, but SMC patients reported significantly more complaints compared to HE. The difference in the amount of complaints reported by the patients themselves and by their informants was found neither in aMCI, nor in SMC patients. There were identified questions which may distinguish between SMC and aMCI patients, and questions which may distinguish between SMC patients and HE; that means questions able to distinguish...
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