An Investigation of the Use of E‐Mail as a Supplemental Modality for Clinical Supervision

The authors investigated the use of student‐initiated e‐mail as a supplemental modality for supervision. Nineteen students e‐mailed their instructors weekly during their 15‐week practicum; these e‐mails were analyzed across 3 time periods using the categories of the discrimination model (J. M. Bernard, 1979, 1997) and an adaptation of W. Lanning's (1986) professional behavior category. Although patterns of e‐mails were similar across time, there was a significant decline in the number of e‐mails as the practicum progressed. Significance was found for message focus, with personalization messages and professional behavior/practicum class messages accounting for more than half of the messages across 3 time periods.     

On the Issue of Item Selection in Computerized Adaptive Testing With Response Times

Many standardized tests are now administered via computer rather than paper‐and‐pencil format. The computer‐based delivery mode brings with it certain advantages. One advantage is the ability to adapt the difficulty level of the test to the ability level of the test taker in what has been termed computerized adaptive testing (CAT). A second advantage is the ability to record not only the test taker's response to each item (i.e., question), but also the amount of time the test taker spends considering and answering each item. Combining these two advantages, various methods were explored for utilizing response time data in selecting appropriate items for an individual test taker. Four strategies for incorporating response time data were evaluated, and the precision of the final test‐taker score was assessed by comparing it to a benchmark value that did not take response time information into account. While differences in measurement precision and testing times were expected, results showed that the strategies did not differ much with respect to measurement precision but that there were differences with regard to the total testing time.     

Mathematical problem solving and young children

Educators of young children can enhance the development of a problem-solving thought process through daily activities in their classrooms. An emphasis should be placed on the actual thought process needed to solve problems that occur in everyday living. Educators can follow simple suggestions to create problem-solving situations for all ages of children. The process of thinking through a problem and finding a solution is more important than traditional mathematics counting and memorizing useless facts. Even very young children are capable of a problem-solving process that is on the appropriate developmental level. The problem-solving process is constructivist in nature, as each individual perceives problems according to her or his background and developmental levels. Educators need to make a conscious effort to capitalize on all stages of problem-solving thinking to enhance future mathematical development.     

博物馆观众研究简史( 二)——20世纪60年代至80年代

博物馆观众研究领域最早的成果可以追溯到吉尔曼(Gilman)在1911年的研究工作,本文对观众评估研究的关注对象与问题进行了历史性的批判分析。本研究揭示了各类研究建立的范式,包括对实施机制的说明、对评估客观性的审问、对文化民主化研究和营销相关研究之间不协调性的强调。本文介绍了20世纪60年代至80年代教育技术模型对博物馆观众研究的影响,并结合皇家安大略博物馆和大英博物馆(自然史部分)的案例,介绍了教育技术模型的应用。     

博物馆观众研究简史(三)——20世纪90年代至今

博物馆观众研究领域最早的成果可以追溯到吉尔曼(Gilman)在1911年的研究工作,本文对观众评估研究的关注对象与问题进行了历史性的批判分析。本研究揭示了各类研究建立的范式,包括对实施机制的说明、对评估客观性的审问、对文化民主化研究和营销相关研究之间不协调性的强调。本文结合多年经济危机和理性化带来的影响,介绍了20世纪90年代至今博物馆观众研究的工具化,并结合观众研究的他律性的特点进行分析,提出了这一领域面临的四大挑战。     

博物馆观众研究简史(一)——20世纪60年代以前

博物馆观众研究领域最早的成果可以追溯到吉尔曼在1911年的研究工作,本文对观众评估研究的关注对象与问题进行了历史性的批判分析。本研究揭示了各类研究建立的范式,包括对实施机制的说明、对评估客观性的审问、对文化民主化研究和营销相关研究之间不协调性的强调。本文介绍了博物馆观众研究领域的形成和早期研究的成果,描绘了20世纪60年代以前这一领域的行为主义研究进路,以及这一阶段末期自然主义评估萌芽的出现。     

Four‐ to Six‐Year‐Old Children's Sensitivity to Reliability Versus Consensus in the Endorsement of Object Labels

Recent studies have demonstrated that young children use past reliability and consensus to endorse object labels. Until now, no study has investigated how children weigh these two cues when they are in conflict. The two experiments reported here were designed to explore whether any initial preference for information provided by a consensual group would be influenced by the group's subsequent unreliability. The results show that 4‐ and 5‐year‐old children were more likely to endorse labels provided by an unreliable but consensual group than the labels provided by a reliable dissenter. Six‐year‐olds displayed the reverse pattern. The article concludes by discussing the methodological implications of the two experiments and the developmental trajectory regarding the way children weigh consensuality versus reliability.     

The role of the entry-and-stretch phase at the different paces of race in front crawl swimming

The aim of this study was to determine the role played by the entry-and-stretch phase in the coordination of swimming, at the different paces of race. Three national level swimmers (two men and one woman) were recorded, in lateral and bottom views, in three swimming paces: sprint (50 m and 100 m), middle-distance (200 m and 400 m) and long-distance (800 m and 1500 m). Anatomical landmark positions were obtained by manual digitalisation of the videos. Computational fluid dynamics and experimental studies (with a strain gauge balance and particle image velocimetry method) were used to measure and to calculate the external forces applied to the hand and to the forearm and to visualise the flow around the profile. Entry-and-stretch is the phase which varies the most according to the swimming pace. This phase can be decomposed into two sub-phases: one, the extension forward coordinated with the insweep of the opposite arm, and another one, the rotation downward coordinated with the upsweep. Results show that, at the three paces, this phase is not propulsive and could contribute essentially to maintain the horizontal balance of the body.