• 음성과학
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• 제9권2호
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• pp.157-165
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• 2002

The purpose of this study was to determine the effects of associative drawing task in a Korean bilingual aphasic. The subject is a 41-year old male and lived and was educated in the United States for over 25 years(from the age of 14 through 39). His former occupation was a psychiatrist. He has had a massive lesion in the occipital lobe. This study focused on improving his spontaneous language performances by associative drawing task. The associative drawing task along with spontaneous speech is to help the subject's cognition. The ten target words in this treatment were familiar words and could be drawn easily. The results were that the associative drawing task was effective on improving the patient's drawing ability-writing ability in English only-and naming performance both in English and Korean. However, the patient's writing ability in Korean did not show any improvement.

• 한국과학교육학회지
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• 제26권1호
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• pp.1-8
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• 2006

본 연구에서는 고등학교 학생들의 성취 목적(과제지향/수행 지향/수행 회피), 유능감 등의 동기 변인과 학습 전략(심층적/피상적), 자기 조절 능력 등의 인지 변인 및 화학 선다형 수리 문제 해결력 사이의 인과관계를 경로 분석을 통해 조사하였다. 연구 결과, 유능감과 과제 지향 목적은 자기 조절 능력을 통하여 화학 수리 문제 해결력에 긍정적 영향을 미쳤으며, 특히 유능감은 인지 변인을 경유하지 않고도 직접적으로 화학 수리 문제 해결력에 긍정적 영향을 주는 것으로 조사되었다. 인지 변인 중 심층적 학습 전략은 유능감과 과제 지향 목적의 영향을 받았고 피상적 학습 전략은 수행 회피 목적의 영향을 받았으나, 이러한 학습 전략과 화학 수리 문제 해결력 사이에는 인과관계가 존재하지 않았다.

• 중소기업연구
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• 제41권3호
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• pp.23-47
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• 2019

본 연구는 중소기업 맥락에서 개인-환경적합성과 효과성 변수 간의 관계, 자발성에 기반한 직무동기가 어떤 의미가 있는지 알아보고자 했다. 첫째, POF, PJF(욕구), PJF(능력) 등 세가지 유형의 개인-환경적합성이 효과성변수인 과업성과와 이직의도에 미치는 영향이다. 둘째, 개인-환경적합성이 직무동기에 미치는 영향이다. 셋째, 개인-환경적합성과 효과성 변수 간의 관계에서의 직무동기의 매개 역할 규명이다. 이를 위해 중소기업에 종사자를 대상으로 자료를 수집하였고, 211명의 자료를 통해 검증하였다. 가설 검증 결과 첫째, PJF(능력)은 과업성과와 이직의도에 유의미한 영향을, POF와 PJF(욕구)는 이직의도에 유의미한 영향을 미쳤다. 둘째, PJF(욕구)와 PJF(능력)은 내재적동기에 정(+)의 영향을 미쳤고, PJF(능력)은 외적동기와 동일시동기에도 유의미한 영향을 미쳤다. 셋째, POF, PJF(욕구), PJF(능력) 모두 과업성과와의 관계에서 모두 내재적동기가 매개역할을 하였다. 또한, PJF(능력)과 과업성과와의 관계는 외적동기에 의해서도 매개됨을 확인하였다. 이상의 연구결과를 기반으로 연구의 시사점과 향후 연구과제 등을 제시하였다.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1995년도 추계학술대회논문집
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• pp.3-12
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• 1995

In this research, we investigated the effect of three visual feedback conditions (direct viewing, one-monitor viewing, and tow-monitors viewing) on the task performance of human operator in teloperation task. The three different level of task difficulties under each concitions were performed by thirty-six subjects. The result of the experiments was analysed by the task difficulties, and the measurements of performance are the task completion time and the frequency of task errors. In a teleoperator, the participation of a human operator is always required, and the man-machine interface and the operator's abilities is an important issue. Recently, the different types of sensory feedback conditions(force, vision, sound, tactile, etc) for teleoperation is a very active research area in ergonomics. Among them, visual feedback conditon is an important sense that can provide the information of task environment. Therefore, the sufficient understandings and investigation for human ability under various visual feedback conditions is required to establish the efficient man-machine interface of teleoperation. The result showed that the visual feecback conditions and the level of task difficulties have a significant effect on the task performance. For three level of task difficulties, the task completion time was the shortest under the condition of direct viewing. The number of task errors under the conditions of direct viewing and two-monitors viewing were reduced by more than half compare to that of one-monitor viewing.

• Physical Therapy Rehabilitation Science
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• 제6권3호
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• pp.134-139
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• 2017

Objective: Dual-task interference is defined as decrements in performance observed when people attempt to perform two tasks concurrently, such as a verbal task and walking. The purpose of this study was to investigate the changes of gait ability according to the dual task interference in chronic stroke survivors. Design: Cross-sectional study. Methods: Ten chronic stroke survivors (9 male, 1 female; mean age, 55.30 years; mini mental state examination, 19.60; onset duration, 56.90 months) recruited from the local community participated in this study. Gait ability (velocity, paretic side step, and stride time and length) under the single- and dual-task conditions at a self-selected comfortable walking speed was measured using the motion analysis system. In the dual task conditions, subjects performed three types of cognitive tasks (controlled oral word association test, auditory clock test, and counting backwards) while walking on the track. Results: For velocity, step and stride length, there was a significant decrease in the dual-task walking condition compared to the single walking condition (p<0.05). In particular, higher reduction of walking ability was observed when applying the counting backward task. Conclusions: Our results revealed that the addition of cognitive tasks while walking may lead to decrements of gait ability in stroke survivors. In particular, the difficulty level was the highest for the calculating task. We believe that these results provide basic information for improvements in gait ability and may be useful in gait training to prevent falls after a stroke incident.

• 한국과학교육학회지
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• 제17권4호
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• pp.525-540
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• 1997

The present study tested the hypothesis that maturation of the prefrontal lobes is a crucial factor determining the performance of scientific reasoning tasks, Functions of the prefrontal lobes, such as activating relevant information, sequential planning and monitoring, and inhibiting irrelevant information, are related thinking patterns with scientific reasoning. Therefore, we inferred the idea that the prefrontal lobes play an important role in scientific reasoning. To test the hypothesis. the present study investigated a prefrontal lobe patient's task solving procedures in scientific reasoning tasks and the correlation and regression analysis between a test of prefrontal lobe function and two scientific reasoning tasks, The perseverative errors in the Wisconsin Card Sorting Test(WCST) was used as a measure of the prefrontal lobe function, The Melinark Type Task and the Classroom Test of Scientific Reasoning were used as measures of scientific reasoning abilities. Ages and Group Embedded Figure Test were also used as measures of two alternative hypotheses, general maturation and field independency respectively. The prefrontal lobe patient showed a crucial deficiency in solving scientific reasoning tasks. In the tasks, the patient could not used the reasoning of If... and... then... therefore pattern. In correlation study, the perseveration errors of the WCST showed a significantly negative correlation with two scientific reasoning tasks. Multiple regression study also showed that the perseveration errors measured as a function of the prefrontal lobes have more contribution to scientific reasoning ability than contributions of alternative hypotheses. Therefore, the present study supported the hypothesis that prefrontal lobes play a crucial role in scientific reasoning ability, What function of the prefrontal lobes do play crucial role in scientific reasoning? The present study provided an explanation for the question, which inhibiting ability of the prefrontal lobes is responsible for the scientific reasoning ability, in a part at least. That is, perseverative tendency in task-solving procedures causes a deficiency of an ability to inhibit the wrong information to solve a task. The present study provided a possibility of neuropsychological approach in science education research. The present study also showed an importance of the prefrontal lobe development in the performance of scientific reasoning task.

• 음성과학
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• 제10권3호
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• pp.37-45
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• 2003

This study attempted to determine the effects of a context-based drawing task on the language expression of a severe Wernicke's and Broca's aphasic. The subjects in this study showed a poor auditory comprehension and naming performance. They also showed paraphasia and perseveration. This study focused on improving language expression by a drawing task based on conversation at hand. Ten target words were chosen which were easily drawnable and familiar to the subjects. The results showed that the context-based drawing task was effective on improving the subjects' confrontation naming ability and expressive language ability in terms of explanation of sentences. In addition, the Broca's aphasic showed improved naming ability when the contextual cues were given and he was supposed to spontaneously name words.

• 말소리와 음성과학
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• 제12권1호
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• pp.51-63
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• 2020

음운인식은 음운론 영역의 상위언어인식 능력으로, 읽기 및 어휘력 등의 언어능력을 예측하는 것으로 알려져 있다. 본 연구는 음운인식 능력과 기타 음운처리 능력, 그리고 언어능력 간의 관계를 일반아동 집단과 언어발달지연 아동 집단 간 비교를 통해 살펴보고자 하였다. 4~6세의 언어발달지연 아동(n=15)과 일반아동(n=18)을 대상으로 음운인식 능력을 평가하기 위하여 음절수세기, 음절탈락, 음절변별 과제를 실시하였다. 또한 비단어 따라말하기, 숫자 거꾸로 회상하기의 두 가지 음운처리 과제와 수용 및 표현어휘력, 문법성판단 과제와의 상관관계를 분석하고, 언어능력을 예측하는 음운인식 하위과제가 무엇인지 검토하였다. 음운인식 하위과제 중 음절수세기를 제외한 음절탈락, 음절변별 과제 수행력의 집단 간 차이가 유의하였다. 또한 일반아동 집단은 음절탈락과 숫자 거꾸로 회상하기, 음절변별과 수용어휘력 과제 수행력 간 상관관계가 유의하였으며, 언어발달지연 아동 집단은 음절수세기 과제와 숫자 거꾸로 회상하기, 수용어휘력, 표현어휘력, 문법성판단 과제의 수행력 간 상관관계가 유의하였다. 그리고 단계적 중다회귀분석 결과 일반아동 집단은 음절변별 과제가 수용어휘력 및 문법성판단 과제 수행력을 유의하게 예측하는 것으로 나타났으며, 언어발달지연 아동 집단은 음절수세기 과제가 수용어휘력, 표현어휘력, 문법성판단 과제 수행력을 유의하게 예측하는 것으로 나타났다. 언어발달지연 아동 집단은 일반아동 집단에 비해 음절수세기를 제외한 나머지 음절 수준의 음운인식 과제의 수행력이 저조하였으며, 이러한 특징이 상관관계 분석 및 회귀분석 결과에도 반영되었다. 또한 각 집단에서 음운인식 과제 수행력이 언어능력을 유의하게 예측하는 것으로 나타난 결과는 음운론 영역의 상위언어인식 능력의 중요성을 시사한다.

• 아동학회지
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• 제36권4호
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• pp.229-242
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• 2015

The purpose of this study was to investigate young children's nonsymbolic arithmetic ability according to task difficulty. The participants in this study comprised 43 2-year-old children and 48 4-year-old children recruited from 5 childcare centers located in Seoul, Korea. All tasks were composed of comparison, addition, subtraction, multiplication and division tasks. In addition, each arithmetic task varied with the ratio of the two quantities; low level(1:2), middle level(2:3), high level(4:5). The results revealed that 2 & 4-year-old children could perform a large numerical range of nonsymbolic arithmetic tasks without influences from previously learned mathematics. This finding suggests that children have a degree of numerical capacity prior to symbolic mathematics instruction. Furthermore, children's performance on nonsymbolic arithmetic tasks indicated the ratio signature of large approximate numerical representation. This result implies that large approximate numerical representation can be used in arithmetical manipulations.

• 영재교육연구
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• 제25권4호
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• pp.529-546
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• 2015

본 연구는 보다 나은 영재교육을 제공하기 위해 영재교육의 성과인 만족도와 성취도에 영향을 미치는 변인을 찾고 이들 사이의 구조적 관계를 살펴보고자 하였다. 영재교육의 성과에 영향 미치는 변인은 $Gagn{\acute{e}}$의 재능분화이론을 통해 과제집착력, 자기조절학습능력, 부모지원을 선정하였다. 본 연구는 경기도 영재교육원 학생 182명을 대상으로 진행하였다. 영재교육에서의 과제집착력, 자기조절학습능력, 부모지원, 만족도 및 성취도간의 관계를 살펴본 결과는 다음과 같다. 첫째, 영재교육에서의 과제집착력, 자기조절학습능력 및 부모지원은 만족도에 영향을 미쳤다. 둘째, 과제집착력과 부모지원은 성취도에 영향을 미치는 것이 확인되었다. 따라서 영재교육에서는 학생들의 과제집착력, 자기조절학습능력 및 부모지원을 높여 만족도와 성취도를 높여 나가야 할 것이다.