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Öğe Decision-making under stress: Executive functions, analytical intelligence, somatic markers, and personality traits in young adults(Routledge Journals, Taylor & Francis Ltd, 2024) Yilmaz, Selin; Kafadar, HaticeThe main goal of the study was to scrutinize mediating and moderating mechanisms identified in line with the predictions of Somatic Marker Hypothesis (SMH) and Dual Process Theory of the effect of acute stress on decision making. The sample group of the research comprised of 61 (31 females, 30 males) healthy university students aged between 18 and 23 (x = 21, SD = 1.28). Data measurement tools were Skin Conductance Response Measurement, Iowa Gambling Test, Wisconsin Card Sorting Test, Wechsler Memory Scale-III Spatial Span Subtest, Stroop Test TBAG Form, Wechsler Adult Intelligence Matrix Reasoning Subtest, Stress Rating Scale, The State-Trait Anxiety Inventory, Big Five Personality Traits Scale, Ways of Coping Inventory, Beck Depression Inventory. The findings indicated that acute stress gives rise to decision-making failures by suppressing the SCR emphasized in SMH and mental processes defined in System 2. Furthermore, neuroticism had a moderating role in the relationship between stress and decision-making. Accordingly, the abovementioned theories cannot separately be sufficient to explain decision-making under stress; but, the predictions of these theories can complement each other to thoroughly make out the physiological and cognitive mechanisms of decision-making.Öğe Investigating the relationship between decision-making processes and cognitive processes, personality traits, and affect via the structural equation model in young adults(Routledge Journals, Taylor & Francis Ltd, 2020) Yilmaz, Selin; Kafadar, HaticeThe purpose of this study was to examine the relationship between decision making and set-shifting, working memory, planning, selective attention, personality and affect, and to investigate these relations with the help of the structural equation model (SEM). A total of 100 participants, 59 female and 41 male, participated in the study. The mean age of the participants was 20.42 years (SD = 1.37). Decision making, set-shifting, selective attention, planning, working memory, personality, and affect were measured via the Iowa Gambling Test (IGT), Wisconsin Card Sorting Test, Stroop Test TBAG Version, Tower of London Test, Wechsler Memory Scale-III Letter-Number Sequencing Subtest, Basic Personality Traits Inventory (BPTI), and Positive and Negative Affect Scale (PANAS), respectively, all of which were administered individually. Results of the correlation analyses revealed that various IGT scores were correlated with the four neuropsychological tests as well as the PANAS negative-affect subscale and the BPTI openness to experience factor. Furthermore, the first SEM analysis indicated that the independent latent variables of working memory, set-shifting and planning were significant in predicting the decision making. Finally, the second model of the Block Net Scores revealed the independent latent variables of set-shifting and planning as being significant in decision-making prediction.Öğe Investigation the relationship between big five personality dimensions and executive functions via structural equation model(Istanbul Universitesi, 2018) Yilmaz, Selin; Kafadar, HaticeObjective: The aim of this study was to clarify the link between five factor personality traits and executive functions. Method: A total of 100 healthy participants, 59 female and 41 male, participated in the study. The data was analyzed performing Pearson moment correlation coefficients and Structural Equation Model (SEM). Results: Three models were constituted and the first model revealed a significant relationship between personality characteristics and executive functions. The second and the third models indicated that personality-executive functions relations are based on the correlation between openness to experience and shifting executive function measured by Wisconsin Card Sorting Test (WCST). Results indicated that there is a significant positive relationship between openness to experience and WCST perseverative scores. In addition, there was no correlation between openness to experience and fluid intelligence. Conclusion: According to the results of this study, it can be suggested that high openness may be characterized by high perseverative thinking rather than intellect. © 2018, Istanbul Universitesi. All rights reserved.Öğe Relationship between decision making and fluid intelligence in young adults: The mediator role of set-shifting, planning, problem solving and working memory(Istanbul Universitesi, 2019) Yılmaz, Selin; Kafadar, HaticeObjective: In the literature, the studies investigating the relationship between fluid intelligence and decision-making have yielded contradictory results. The main aim of the study was to examine the mediating role of set-shifting, planning and problem solving and working memory in the association between fluid intelligence and decision making. Method: Overall, 100 healthy participants (59 female and 41 male), took part in the study. The mean age of the participants was 20.42 years (SD = 1.37). Decision making, fluid intelligence, set-shifting, planning and problem solving and working memory were measured via the Iowa Gambling Test (IGT), Raven Standard Progressive Matrices Test (RSPM), Wisconsin Card Sorting Test (WCST), Tower of London Test (TOLDX), Wechsler Memory Scale-III Letter-Number Sequencing Subtest (LNS) respectively, all of which were administered individually. Results: The data were analyzed via Structural Equation Model (SEM). The mediation model showed that set-shifting, planning and problem solving and working memory capacity have a mediator role in the association between fluid intelligence and decision-making. Conclusion: This study is important to understand the sources of the relationship between decision-making and fluid intelligence. The results show that set-shifting, planning and problem solving and working memory increase with the increase of fluid intelligence, and it also supports increase in decision-making performance. © 2019, Istanbul Universitesi. All rights reserved.
