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Tower of Hanoi has become a popular tool in cognitive and neuropsychology to assess a set of behaviors collectively referred to as executive functions. Substantial variability in performance on the Tower of Hanoi (TOH) disk-transfer task among normally functioning young adults, and potential contributions to these individual differences, were examined. In this expanded 60-problem version of the four-disk TOH, the degree to which problem administration (blocked vs. random) and strategy knowledge influenced overall performance and changes in accuracy across problems was examined. Eighty-seven college students were randomly assigned to a Blocked Group (problems given in ascending order of move-length) and a Random Group (problems given in a random order). After administration of the TOH task, participants described their problem solving and these verbal protocols were analyzed with regard to four elements of a strategic approach to problem solving. Problem administration order demonstrated no effect on task performance or on expressed strategy knowledge; however, strategy knowledge did predict performance on the TOH. An expected decrease in performance across trials was observed in the Blocked Group, and an increase in accuracy in the Random group indicated a learning effect. Strategy knowledge did not interact with these changes in performance across the items. These results suggest that external cues do not influence performance on the TOH to the same extent as individual differences in strategy induction relatively early in the problem solving process. 相似文献
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Supporting Teacher Design Teams (TDTs) during local curriculum development efforts is essential. To be able to provide high-quality support, insights are needed about how TDTs carry out design activities and how support is valued by the members of TDTs and how it affects their design expertise. In this study, the design and support processes of two TDTs assisted by an external facilitator were investigated using a case study approach. The results revealed that support offered to TDTs depended on the contextual boundaries and the focus of the design process. The focus, coherence and form of support affected the opportunities for developing teachers’ design expertise. In both cases, teachers’ curriculum design expertise had grown, whereas their pedagogical content knowledge and subject matter knowledge were hardly developed. Findings show that the most conducive support activities and materials were those that could directly be applied in the design process. 相似文献
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Teacher involvement in curriculum design: need for support to enhance teachers’ design expertise 总被引：1，自引：1，他引：0
Teacher involvement in curriculum design has a long tradition. However, although it fosters implementation of curriculum reforms, teachers encounter various problems while designing related to conditions set for the design process, and lack the knowledge and skills needed to enact collaborative design processes. Providing support to enhance teachers’ design expertise is essential, since most teachers are novice designers. However, little is known about the nature of the support offered to improve teachers’ design expertise. In this explorative study, six teachers and six facilitators offering support reflected on an enacted design process, the problems they experienced and the support offered. The findings indicate three gaps in teachers’ design expertise related to three domains (1) curriculum design expertise, (2) pedagogical content knowledge and (3) curricular consistency expertise. The outcomes of this study illustrate the importance of supporting teacher designers during the design process and enhancing teachers’ design expertise. By offering (tailored) support to teachers, the enacted design process and the quality of the design materials are expected to improve. 相似文献
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George P. Vogler Laura A. Baker Sadie N. Decker J. C. Defries David H. Huizinga 《Reading and writing》1989,1(2):163-177
Cluster analysis was employed to identify subtypes of reading disability in a sample of 140 reading-disabled children using factor scores obtained from a battery of psychometric tests. Preliminary results suggested the existence of three subtypes, but closer scrutiny of the data indicated that individual differences are more accurately characterized by continuity in the measurement space. This result demonstrates the need for detailed validation of findings from applications of cluster analysis. Despite the absence of homogeneous subtypes, the characterization of individual strengths and weaknesses on psychometric measures may nonetheless be important for diagnosis and remediation in the educational setting.Behavioral Research Institute 相似文献
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