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과학학습의 정의적 영역에서 사전-사후 통합 검사 설계의 타당화 연구: 과학영재를 대상으로
임채성,박형민,Lim, Chae-Seong,Park, Hyoung-Min 한국초등과학교육학회 2017 초등과학교육 Vol.36 No.3
In this study, the reliability and validity of the retrospective pre-post test were analyzed in order to solve the problem of traditional pre-post test including response shift bias. Samples of the study were 162 elementary school students who are studying at the S university gifted education center in Seoul. Before completion of the field trip, we conducted pre test of science-related attitudes. After completion of the field trip, respondents were asked to compare their responses of pre and post science-related attitudes to quantitatively analyze the commonalities and differences of the two tests. To find out more characteristics, qualitative data such as daily records and interview were also gathered and analyzed. The major results of the study are as follows. First, for the paired t-test, there was no statistically significant difference between separate pre-test scores and retrospective pre-test. There was a very high correlation between the separate pre-test scores and the retrospective pre-test. Second, there were significant differences in all seven sub-factors of science-related attitudes between the retrospective pre-test and the post-test. Third, the separate pre-test scores showed a slightly higher tendency than the retrospective pre-test scores. This suggests that the response shift bias appears when it is performed the separate pre-test in affective domain. As a result of the interview, it was found that the evaluation standards of separate pre-test did not match with those of post-test. Forth, internal consistency reliability of the retrospective pre-test was higher than that of the separate pre-test. However, there were significant differences in six factors of science-related attitudes excluding the 'social implications of science' between the separate pre-test and the post-test. Based on these results, the retrospective pre-post test design provides simplicity and convenience to both respondents and investigators, as it is done with one test. The retrospective pre-post test design can be regarded as a valid design for the self-report measurement of affective domain on a single experimental group.
다중지능에 기초한 과학 프로젝트 활동이 초등학교 아동의 문제해결 행동에 미치는 영향
임채성(Chae Seong Lim),왕경순(Kyung Soon Wang) 한국초등과학교육학회 2000 초등과학교육 Vol.19 No.1
This study examined the influences of science project activities based on multiple intelligences on problem solving behaviors of elementary school children. Specifically, the influences of the project activities on the problem solving skills and propensities of the children were investigated. Forty-four fifth graders were selected for the study. They performed the projects and made their products of it during five months on the units of $quot;Weather$quot; and $quot;Our Body$quot;. Criteria for assessment of problem solving abilities were determined. The patterns reflected in products of the project activities were examined, then the observation of the subjects` problem solving behaviors and the interviews were performed based on the criteria. The results were analyzed through both of qualitative and quantitative approaches. In these analyses, the implementation of the science projects was found to contribute to the improvement in all sub-factors of problem solving, specially, skills associated with the propensities of problem identification and of the collection, analysis, and synthesis of data significantly increased
뇌 기능에 기초한 과학 교수학습: 뇌기능과 학교 과학의 정의적,심체적,인지적 영역의 연계적 통합 모형
임채성 ( Chae Seong Lim ) 한국초등과학교육학회 2005 초등과학교육 Vol.24 No.1
In this study, a brain-based model for science teaching and learning was developed based on the natural processes which human acquire knowledge about a natural object or on event, the major domains of science educational objectives of the national curriculum, and the human brain`s organizational patterns and functions. In the model, each educational objective domain is related to the brain regions as follows: The affective domain is related to the limbic system, especially amygdala of human brain which is involved in emotions, the psychomotor domain is related to the occipital lobes of human brain which perform visual processing, temporal lobes which perform functions of language generating and understanding, and parietal lobes which receive and process sensory information and execute motor activities of body, and the cognitive domain is related to the frontal and prefrontal lobes which are involved in thinking, planning, judging, and problem solving. The model is a kind of procedural model which proceed from affective domain to psychomotor domain, and to cognitive domain of science educational objective system, and emphasize the order of each step and authentic assessment at each step. The model has both properties of circularity and network of activities. At classrooms, the model can be used as various forms according to subjects and student characteristics. STS themes can be appropriately covered by the model.
뇌 기반 진화적 과학 교수학습 모형을 적용한 초등학교 학생의 자유 탐구 활동에서 과학 태도와 흥미 주제 영역 분석
임채성 ( Chae Seong Lim ),김재영 ( Jae Young Kim ),백자연 ( Ja Yeon Baek ) 한국초등과학교육학회 2012 초등과학교육 Vol.31 No.4
Interest is acknowledged to be a critical motivational variable that influences learning and achievement. The purpose of this study was to investigate the interest of the elementary students when free inquiry activities were performed through a brain-based evolutionary scientific teaching and learning model. For this study, 106 fifth grade students were chosen and performed individually free inquiry activities. The results of this study were as follows: First, after free inquiry activities, as to free inquiry science related attitude, a statistically significant difference was not observed. But they came to have positive feelings about the free inquiry. Especially students marked higher mean score in openness showed consistency in sub-areas of free inquiry science related attitude. Second, students had interests in various fields, especially they had many interests in area of biology. They chose inquiry subjects that seems to be easily accessible from surrounding and as an important criterion of free inquiry they thought the possibility that they could successfully perform it. And students who belong to the high level in the science related attitudes and academic achievement diversified more topics. Third, most of students failed to further their topics. However, the students who specifically and clearly extended their topics suggested appropriate variables in their topics. On the other hand, students who couldn`t elaborate their topics were also failed to suggest further topics and their performance of inquiry was more incomplete. In conclusion, the experiences of success in free inquiry make the science attitude of students more positive and help them extend their inquiry. These results have fundamental implications for the authentic science inquiry in the elementary schools and for the further research.
임상연구 : Remifentanil이 전신마취 유도 시 Rocuronium에 의한 혈관통의 발생과 심혈관계 반응에 미치는 효과
임채성 ( Chae Seong Lim ),신용섭 ( Yong Sup Shin ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.50 No.6
Background: Remifentanil is an opioid agonist with rapid onset and ultra-short duration of action. Rocuronium bromide can elicit a high incidence of pain when intravenous injection. In this study, the quantitative effect of remifentanil pretreatment on the injection pain of rocuronium and cardiovascular response during anesthetic induction were evaluated. Methods: Eighty adult female patients undergoing gynecological procedures with general anesthesia were analyzed for this study. Patients were randomly allocated to one of four groups. Patients received 2 ml of normal saline (n = 20), 2 ml (40 mg) of 2% lidocaine (n = 20), 2 ml of remifentanil 0.5μg/kg (n = 20) or 2 ml of remifentanil 1μg/kg (n = 20) 60 seconds prior to administration of rocuronium 0.7 mg/kg. Pain was assessed after rocuronium injection. Systolic and diastolic arterial blood pressure and heart rates were measured before and during anesthetic induction. Results: Both remifentanil and lidocaine have the good effect in minimizing the rocuronium injection pain. But, only 1μg/kg of remifentanil blunts the hypertension after endotracheal intubation. Conclusions: A bolus dose (1μg/kg) of remifentanil may be used for minimizing the rocuronium injection pain and blunting the hypertension after endotracheal intubation. (Korean J Anesthesiol 2006; 50: 637~41)
임상연구 : 소아에서 Propofol과 Ketamine을 사용한 전신마취 유도 시 호흡역학의 비교
임채성 ( Chae Seong Lim ),이호영 ( Ho Young Lee ),윤희석 ( Hee Suk Yoon ),손수창 ( Soo Chang Son ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.51 No.6
Background: Propofol and ketamine are believed to reduce airway resistance. The aim of the present study was to compare the effect of propofol and ketamine on respiratory mechanics after endotracheal intubation in children. Methods: Forty pediatric patients were assigned randomly to two groups: propofol (n = 20) and ketamine (n = 20). Patients were anesthetized with propofol (2 mg/kg) or ketamine (2 mg/kg). All patients were paralyzed with rocuronium (0.8 mg/kg) and intubated and ventilated mechanically (ETCO2: 30-40 mmHg, tidal volume: 10 ml/kg, respiratory rate: 15-25 time/min). Peak inspiratory pressure (PIP), respiratory resistance (Rr), dynamic compliance (Cdyn) and expiratory tidal volume (Vte) measurements were recorded at five time points; 0.5 min after intubation without sevoflurane (baseline), following 2.5 min, 5 min, 7.5 min and 10 min of ventilation with 2% sevoflurane- 50% nitrous oxide. Results: Rr at 0.5 min after intubation was 27.4 ± 12.7 cmH2O/L/s in the propofol group, and 30.0 ± 13.5 cmH2O/L/s in the ketamine group. Cdyn at 0.5 min after intubation was 28.0 ± 9.9 ml/cmH2O in the propofol group, and 25.1 ± 10.6 ml/cmH2O in the ketamine group. There was no significant difference in the response of PIP, Rr, Cdyn and Vte between two groups and within groups. Conclusions: We suggest that the effects of propofol and ketamine on respiratory mechanics were similar during anesthetic induction in children. (Korean J Anesthesiol 2006; 51: 690~4)