Mapping two new points on the tennis expertise continuum: tactical skills of adult advanced beginners and entry-level professionals during competition     

McPherson SL  Kernodle M 《Journal of sports sciences》2007,25(8):945-959

Research examining problem representations of individuals during task performance is advancing our understanding of information processing and expertise in a variety of sports. However, few studies using similar methodology have been conducted on individuals of various competitive standards in one domain in similar contexts. This study examined problem representations of adult advanced beginners and entry-level professionals accessed during singles tennis competition (n = 12). These groups were selected to represent players with performance skills that were different from those studied previously (i.e. adult beginners and varsity players). Immediate recall and planning interviews were conducted between points during singles tennis competition. Players competed within their respective expertise groups. Verbal reports were transcribed verbatim and concepts were scored according to a model of protocol structure. Several multivariate analyses of variance were conducted on rank scores for measures of concept content and structure using the L-statistic. Entry-level professionals exhibited more advanced problem representations than advanced beginners regardless of interview type. These findings together with those of previous research suggest adaptations in long-term memory profiles with increases in performance skills. For example, beginners lacked action plan and current event profiles because they generated goals and reiterated game events during both interviews. Advanced beginners, who had better performance skills than beginners, exhibited rudimentary action plan profiles and deficient current event profiles because they generated and monitored several detailed actions related to the current context during recall interviews and generated only a few goals during planning interviews. In contrast, varsity players and professionals processed tactical information in the current context and beyond denoting the existence of both action plan and current event profiles. Varsity players, with inferior performance skills than professionals, exhibited fewer and less associated tactical concepts than professionals during both interviews.  相似文献   

Impact and dynamics of portfolio assessment and traditional assessment in a college physics course     

Timothy F. Slater  Joseph M. Ryan  Sara L. Samson 《科学教学研究杂志》1997,34(3):255-271

Popular belief in alternative assessment procedures suggests that the use of student portfolios can help learners successfully organize and integrate newly acquired scientific knowledge. This two-group comparison study documents the use of student created portfolios in an algebra-based, college-level, introductory physics course. Sixteen students were assessed primarily using a portfolio-style assessment procedure. Nineteen students were assessed primarily using traditional, objective examinations. Both groups were given the same cumulative, multiple-choice final examination. All students completed a pre- and post-self-report survey of achievement in physics. There were no significant differences in learner achievement between the two groups on the final examination or on the self-report of achievement given before and after instruction. Analysis of two focus group discussions did, however, suggest that students assessed by portfolios feel less anxious about learning physics, devote considerable time to reading and studying outside of class, internalize and personalize the content material, and enjoy the learning experience. The results of this study suggest that portfolio-style assessment procedures support student achievement at least at the same level as traditional assessment procedures and appear to have additional benefits. © 1997 John Wiley & Sons, Inc. J Res Sci Teach 34: 255–271, 1997.  相似文献   

A comparison of WISC-R score profiles of students placed in special education and those referred,but not placed     

Larry C. Sexton  Sue Street 《Psychology in the schools》1985,22(2):142-145

This study investigated the similarity in the pattern of strengths and weakness on the Wechsler Intelligence Scale for Children-Revised (WISC-R) subtest scores between those students evaluated and placed in special education programs and those students evaluated but not placed in special programs. Subjects were 585 students in grades 1–6 from three county school systems in eastern Kentucky who were referred for evaluation for possible special education placement. A multiple profile analysis using a MANOVA technique was used to test two hypotheses for each of the two profiles created for both study groups. Comparisons also were made between each group in the rank order of the various scores. The findings revealed that the two groups were similar in the pattern of their relative strengths and weaknesses on the WISC-R. Implications of these findings for teaching strategies for the two groups were discussed.  相似文献   

Use of asynchronous discussions for corporate training: A case study     

Sue Czeropski 《Performance Improvement》2012,51(9):14-21

In this knowledge‐based economy, corporations invest millions of dollars in training and expect a return on that investment; similarly, employees have a vested interest in wanting to further their knowledge and their ability to contribute. The types of e‐learning strategies and instructional methods being employed elude the use of asynchronous discussions as a viable instructional method. This article summarizes a case study in which asychronous discussions were used as an instructional strategy in two training interventions.  相似文献   

Designing With Multiple Interactives: Five Common Pitfalls     

Sue Allen  Joshua Gutwill 《Curator: The Museum Journal》2004,47(2):199-212

Abstract Interactive museum exhibits are ubiquitous in science centers, and are becoming increasingly popular in art, history and cultural museums. At an interactive exhibit, visitors can act on the exhibit and the exhibit reacts. While there is much theoretical and empirical support for the idea that interactive features promote science learning, we believe that serious design problems can arise if an uncritical “more is better” approach is taken to interactivity. This article describes five common pitfalls of designing exhibits with high levels of interactivity or multiple interactive features: 1) multiple options with equal salience, 2) features allowing multiple users to interfere with one another, 3) options that encourage users to disrupt the phenomenon being displayed, 4) features that make the critical phenomenon difficult to find, and 5) secondary features that obscure the primary feature. Examples of each of the five problems are presented, and possible design solutions are offered.  相似文献   

Technology—it's all in the sales pitch!     

Bonnie Sue Spencer 《Performance Improvement》1995,34(4):35-36

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