• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.1067-1070
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• 2011

현재 뇌에 대한 연구는 지속적으로 연구되고 있는 분야 중에 하나이다. 뇌파나 뇌의 활동들을 분석할 수 있는 장비들이 개발되면서 더욱 활발하게 연구되어지고 있다. 기중 뇌의 기능에 대한 연구들도 화발하게 연구되고 있는 분야 중에 하나이다. 뇌의 기능은 보고, 듣고, 말하고, 생각하는 등의 모든 행위들과 연관되어있다. 또한 그러한 기능들은 인지능력이라고 하기도 한다. 인지능력은 인지적, 정신적인 요구가 필요하다. 이러한 것을 인지부하라고 하고, 과도한 인지적, 정신적인 요구는 인지과부하라고 한다. 인지부하에 따라서 인지능력은 영향을 받는다고 할 수 있다. 본 연구에서는 인지부하에 따라서 인지능력이 변화하는 정도를 실험하였다.

• Korean Journal of Forensic Psychology
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• v.11 no.2
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• pp.155-171
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• 2020

The purpose of this study is to examine the effects of emotional arousal and cognitive load on pupil diameter during a lie detection interview. The guilty group (n = 30) committed a mock crime (i.e., stealing cash) and the innocent group (n = 30) performed a mission (i.e., sending a message) in the research assistant's office. After that, their pupil size was measured using a wearable eye-tracker during the interview. The interview questions were classified with the three cognitive load, three emotional arousal, and three neutral questions. The results indicate that the main effects of group and time were not significant, but the interaction between group and time was significant. It means that when answering cognitive load questions, the guilty group showed larger increase in pupil diameter than the innocent group. The present study suggests that inducing cognitive load is more effective than inducing emotional arousal during an interview when using pupil diameter as an index of deception, and it is expected to improve the accuracy of lie detection.

• The Journal of Korean Association of Computer Education
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• v.10 no.1
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• pp.67-75
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• 2007

The purpose of the study is to develop handheld learning tool based on design principles drawn from cognitive load theory. To optimize learner's cognitive load, the learning program should be developed for maximizing the effective load and(or) minimizing ineffective load. The principles, which were applied to developing the learning program, for minimizing the extraneous cognitive load, one of the ineffective loads, are modality, redundancy, split-attention, multimedia, and worked-out example. In this study, we will show possibilities for designing an effective mobile learning program.

• Journal of Digital Convergence
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• v.10 no.11
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• pp.323-329
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• 2012

This study examines the anchoring effect and the adjustment process of two variables(verbal information, cognition load) with snack products. In the results of this study, 1) we found the anchoring effect because the respondents predicted more the number of real units(goraebap) on the packaging painted 25 units than 5 ones. 2) We confirmed the moderating effect of verbal information. The difference of the number of real units predicted between the two packaging was decreased when the visual information was in company with verbal information. And 3) the moderating effect of cognitive load appeared because the more cognitive load was, the less the difference of the number of real units predicted was. This study has shown that we can reduce the errors and biases by adjusting the information frame or the cognitive load. This research provides a theoretical-practical implications to the marketing staffs like packaging designers as well as scholars to study consumer psychology.

• Education of Primary School Mathematics
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• v.20 no.4
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• pp.305-319
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• 2017

In the process of finding the triangle height, 26 students in the 6th grade were surveyed to understand the students' triangle height through the eye movement data and to investigate the cognitive load of the students. As a result, the correctness rate of the pre-test was significantly increased in the post-test, and the frequency and retention of gaze data were smaller in the post-test than in the AOI of each question. The Participants's subjective cognitive load indicated that it was more difficult to understand the concept of rotated triangles compared with upright triangles that were parallel to the ground. More frequent and more retentions in the eye-tracking data were detected in the right triangles and acute triangles by rotating configuration. Eye movement data show that eye tracking technology can provide an objective measure of students' cognitive load for feedback on instructional design.

• The Korean Journal of Coaching Psychology
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• v.6 no.1
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• pp.57-93
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• 2022

The purpose of this study is to verify the effect of the civil servant superior's coaching leadership on the innovation behavior and cooperative behavior of organizational members of public institutions. And it examines the mediating roles of subordinates' cognitive flexibility and belief of the colleague's potential growth in the relationship between coaching leadership and subordinates' innovative and cooperative behaviors. As a result of the study, first, it was confirmed that the coaching leadership of civil servant superior had a significant positive effect on the innovative and cooperative behaviors of subordinates. Second, it was verified that the superior's coaching leadership had a positive effect on the cognitive flexibility of subordinates and the belief of the colleague's potential growth. Third, it was confirmed that cognitive flexibility mediates between the superior's coaching leadership and innovative behavior. Fourth, it was not significant that the belief of the colleague's growth potential mediates between the superior's coaching leadership and cooperative behavior.

• The Journal of Korean Association of Computer Education
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• v.7 no.6
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• pp.37-45
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• 2004

With the rapid growth of the Web technologies, the Web has changed teaching and learning as well as our life in various ways. Web-based instruction (WBI) supports self-directed and creative learning at anytime anywhere. However, learners may experience the problems of disorientation and cognitive overload when the hyperspace that consists of learning materials is complex. In this paper, we present a Web-based adaptive hypermedia system based on cognitive load theory which can reduce cognitive loads that novices may experience when they learn programming

• KSCE Journal of Civil and Environmental Engineering Research
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• v.29 no.6D
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• pp.663-673
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• 2009

Driver's perceived curve radius is different from actual curve radius at curve sections. This is called visual distortion. It has effect on operation speed according to driver's perception and finally bad effect on safety at curve sections. At present, however, there is no research on quantitatively analysis of visual distortion and no criteria for curve section design considering the visual distortion. Therefore, this study focus on finding degree of visual distortion and suggesting design criteria by visual distortion analysis. The process of this study is as below; First, a calculaiton model of perceived curve radius was developed by survey using computer simulation. In this model, a dependent variable is perceived curve radius and an independent variable is geometric factors. Second, degree of visual distortion was calculated from ratio of perceived curve radius to actual curve radius. Finally, design criteria were suggested through influencing factor analysis of visual distortion at curve sections.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.30 no.4D
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• pp.395-402
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• 2010

The seriousness of a traffic accident appears relatively higher on the curve sections compared with the straight sections due to a change in speed caused by a change in the driver's sight. In particular, the visual distortion phenomenon, one of the dangerous factors taking place on the curve sections, appears different according to the road's geometric design. Although it is a genuinely principal design factor which should be necessarily considered in designing a road, the previous researches on establishing the design standards for it have been insufficiently conducted. As a result, the establishment of the road design standards for the curve sections considering the sight distortion phenomenon is desperately required. This research examined the previous researches on the driver's behaviors, the driver's sight characteristics and the perceived curve radius on the curve sections, and developed the theoretical model of perceived curve radius to which a mathematical technique is applied in consideration of the visual distortion phenomenon on the two-lane curve sections in a local area. In addition, after the theoretical visual distortion was calculated on the basis of the theoretical model of perceived curve radius, the range of error on the theoretical recognition radius model formula was verified through comparing it with the previous researches' experiential visual distortion level and analyzing both of them. As a result, it was observed that as the curve radius practically increases in the theoretical recognition curve radius, the range of error tends to go down, which reflects well the characteristics of the curve sections on the road. Based on this research, it is expected that this research will be helpful to eliminate the safety defects when designing the curve sections and contribute to develop the road design standards considering human factors in the future.

• Progress in Medical Physics
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• v.26 no.2
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• pp.72-78
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• 2015

Organic solvents are known toxic effects like vertigo, behavioral obstacle, distracting, and peripheral neuropathy in neuron areas. However, there have been few studies how neurotoxic solvents-exposed workers are affected by the cognitive load of preceding working memory tasks. Therefore, we used fMRI as to measure the neural correlates of working memory impairment in occupational workers who had from chronic exposure to organic solvent. Twenty-nine solvent-exposed workers were included in this study. Each participant concluded the verbal N-back tasks (1- and 2-back) during the fMRI acquisition. Within-group analyses showed fronto-parietal networks were active in each condition. Direct comparisons between 1- and 2-back showed higher activation during the 2-back than 1-back. We found that increased activation of these regions at lower task demand is associated with increased cost of implementing.