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Pub Date: |
2013-02-00 |
Pub Type(s): |
Journal Articles; Reports - Research |
Peer Reviewed: |
Yes |
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Descriptors:
Artificial Intelligence; Computer Simulation; Computer Mediated Communication; Intelligent Tutoring Systems; Pretests Posttests; Instructional Effectiveness; Learning Processes; Feedback (Response); Metacognition; Science Education; Scientific Concepts; Concept Mapping; Middle School Students; Scaffolding (Teaching Technique); Grade 8; Computer Assisted Instruction; Instructional Design; Comparative Analysis
Abstract:
Betty's Brain is an open-ended learning environment in which students learn about science topics by teaching a virtual agent named Betty through the construction of a visual causal map that represents the relevant science phenomena. The task is complex, and success requires the use of metacognitive strategies that support knowledge acquisition, causal map construction, and progress monitoring. Previous research has established that middle school students struggle at such tasks without proper scaffolding and feedback. In Betty's Brain, this feedback is provided by Betty and Mr. Davis, another virtual agent designed to provide guidance and suggestions as students work. This paper discusses our implementation of contextualized conversational (CC) feedback, and then presents the results of an experimental study exploring the effects of this feedback in two 8th-grade science classrooms. The results illustrate some advantages of the CC feedback in comparison with a baseline dialogue mechanism that presents similar strategies in a non-conversational, non-contextualized form. While both groups showed significant pre-to-post test learning gains, the difference in learning gains between the groups was not statistically significant. However, students who received CC feedback more often performed actions in accordance with the advised strategies, and they created higher quality causal maps.
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Author(s): |
Zhou, Mingming |
Source: |
Educational Psychology, v33 n1 p1-13 2013 |
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Pub Date: |
2013-00-00 |
Pub Type(s): |
Journal Articles; Reports - Research |
Peer Reviewed: |
Yes |
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Descriptors:
Academic Achievement; Item Analysis; Undergraduate Students; Goal Orientation; Prediction; Futures (of Society); Pretests Posttests; Scores; Reading Tests; Correlation; Statistical Analysis; Profiles
Abstract:
In this study, undergraduate students provided confidence ratings to predict future performance in answering questions drawn from the text before reading the text, after reading the text and after rereading the text. Self-reports of achievement goal orientations during reading and posttest scores were also collected. Student's calibration index was the comparison between their predicted posttest performance and actual performance in the posttest. Correlational analyses did not reveal any statistically detectable relationships between self-reported goal orientations and monitoring accuracy, except that bias scores were marginally related to goal orientations. Further cluster analyses and analyses of variance (ANOVA) also showed that student's multiple goal profiles failed to clearly differentiate the groups in terms of their calibration accuracy, yet performance-approach goals did distinguish overconfident from underconfident students. Plausible reasons for the finding were provided and implications for future research were also discussed. (Contains 3 tables.)
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Author(s): |
Draper, Darryl C. |
Source: |
Performance Improvement Quarterly, v25 n4 p67-89 2013 |
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Pub Date: |
2013-00-00 |
Pub Type(s): |
Journal Articles; Reports - Research |
Peer Reviewed: |
Yes |
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Descriptors:
Communities of Practice; Knowledge Management; Electronic Learning; Pretests Posttests; Job Training; Motor Vehicles; Individualized Instruction; Pacing; Essay Tests; Surveys; Instructional Effectiveness
Abstract:
The increased accessibility of technology and Internet connections has enabled organizations to provide their workforces with the opportunity to engage in distributed education. "Harnessing this innovation calls for organizational and technological infrastructures that support the interplay of knowledge and knowing" (Cook & Brown, 1999, p. 381). This article explores the evidence of knowledge convergence in online knowledge-based communities of practice (CoPs). Learning outcomes assessed declarative knowledge, convergence, and knowledge application. A comparison group (self-paced design) was used to draw conclusions about the differential effects of knowledge-building strategies on these learning outcomes. The results show there was a difference in pretest and posttest scores and positive evidence of knowledge convergence. The findings pointed to higher posttest scores and higher level of convergence in the online CoP strategy. (Contains 6 tables and 7 figures.)
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Pub Date: |
2013-03-00 |
Pub Type(s): |
Journal Articles; Reports - Research |
Peer Reviewed: |
Yes |
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Descriptors:
Student Teachers; Learning Strategies; Pretests Posttests; Lecture Method; Teaching Methods; Case Method (Teaching Technique); Preservice Teacher Education; Comparative Analysis
Abstract:
This paper investigates dynamics in approaches to learning within different learning environments. Two quasi-experimental studies were conducted with first-year student teachers (N[subscript Study 1] = 496, N[subscript Study 2] = 1098) studying a child development course. Data collection was carried out using a pre-test/post-test design by means of the Approaches to Learning and Studying Inventory. Study 1 compared a lecture-based learning environment with a student-centred learning environment. Results were opposite to the premise that student-centred instruction deepened student learning. Instead, the latter pushed students towards a surface approach. Study 2 investigated whether mixed learning environments consisting of lectures and case-based learning could enhance students' approaches to learning, compared to learning environments in which either lectures or case-based learning were used. Results showed that the deep and strategic approach decreased in the lecture-based, the case-based and the alternated learning environment, in which lectures and case-based learning were used by turns, while they remained the same in the gradually implemented case-based learning environment. With respect to the surface approach, the strongest decrease was found in the latter learning environment. In conclusion, this paper shows the added value of gradually implementing case-based learning. Nevertheless, it remains difficult to enhance the deep approach, monitoring studying, organised studying and effort management. (Contains 6 tables and 6 figures.)
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