The effectiveness of using computer simulated experiments on junior high students' understanding of the volume displacement concept

Several researchers have suggested that the computer holds much promise as a tool for science teachers for use in their classrooms (Bork, 1979, Lunetta & Hofstein, 1981). It also has been said that there needs to be more research in determining the effectiveness of computer software (Tinker, 1983). This study compared the effectiveness of microcomputer simulated experiences with that of parallel instruction involving hands-on laboratory experiences for teaching the concept of volume displacement to junior high school students. This study also assessed the differential effect on students' understanding of the volume displacement concept using sex of the students as another independent variable. In addition, it compared the degree of retention, after 45 days, of both treatment groups. It was found that computer simulated experiences were as effective as hands-on laboratory experiences, and that males, having had hands-on laboratory experiences, performed better on the posttest than females having had the hands-on laboratory experiences. There were no significant differences in performance when comparing males with females using the computer simulation in the learning of the displacement concept. This study also showed that there were no significant differences in the retention levels when the retention scores of the computer simulation groups were compared to those that had the hands-on laboratory experiences. However, an ANOVA of the retention test scores revealed that males in both treatment conditions retained knowledge of volume displacement better than females.     

Cognitive style and instructional preferences

The aim of the study was to investigate the relationship between learners' cognitive styles and their instructional preferences. The sample consisted of 240 business studies students at a UK university. Subjects' cognitive styles were assessed using the Cognitive Styles Analysis (which assesses the wholist-analytical and verbaliser-imager dimensions of style) and their instructional preferences assessed using an instructional preferences inventory which consisted of three sub-inventories (instructional method, instructional media and assessment method). Overall subjects favoured dependent methods, print based media and informal assessment methods. There was a significant main effect of wholist-analytical style on collaborative method preference (role play, group discussions and business games) and non-print based media preference (overhead transparencies, slides and videos). There was an interaction of the two dimensions of style and gender in their effect on informal assessment method preferences (individual and group assignments and multiple choice and short answer-type questions). The findings are discussed in terms of: (i) models of the cognitive style construct; (ii) the practical implications of individual differences in style and preference.     

STUDENT ASSESSMENT IN MEDICAL EDUCATION: A CANADIAN CASE STUDY

The assessment system of a Canadian medical education program is described. The M.D. Program at McMaster University features the central use of clinical cases as the basis for learning, and the fostering of independence in learning by students. The assessment system, designed to match the objectives and methods of learning, is guided by several principles. These include a balanced emphasis on a range of objectives, the use of on‐going informal feedback, defined and shared responsibilities in assessment, and the design and use of measures which most appropriately match the objectives. More than ten years of experience has pointed out several lessons: if self‐directed learning is held as important, there is a trade‐off between excessively specific objectives, on the one hand, and too little guidance on the other. This attempt to create a balance between these extremes produces a degree of unevenness in the assessment system. External influences such as the national licensing examinations have some effect on the learning climate. It is predicted that the basic elements of the assessment system will remain in place, but some specific changes will occur. These include a clearer statement of objectives on which assessment can be based, the improvement of measurement tools, and an increased emphasis on the training of those who participate in the assessment system.     

Effects of independent word practice with segmented and whole-word sound feedback in disabled readers

Reading-disabled children seem to have considerable difficulties in acquiring phonological recoding skills, which are considered to be very important in becoming a proficient reader. It is hypothesized that speech feedback may support the development of phonological recoding skills. The aim of the present study is to investigate the use of speech feedback during independent word reading and its effects on the remediation of reading skill. Three different conditions for independent practice were employed. For 17 subjects high-quality digitized speech was available on call. When speech feedback was requested either whole-word sound was provided (n = 8) or segmented-word sound was presented (n = 9). A control group (n=14) did not receive speech feedback at all. In a posttest both practised and nonpractised words were presented. Both help call behaviour during practice and changes in reading rate and accuracy from pretest to posttest were analyzed. It was found that speech feedback requests were not dependent on word difficulty. More calls for whole-word sound were made than for segmented-word sound, while latency times for whole-word sound requests were shorter than for segmented-word sound requests. Both forms of speech feedback were equally effective in reading practice words which were initially read incorrectly. However, there was a tendency for the learning effect on nonpractised initially hard-to-read words to be largest when segmented-word sound had been available. It is concluded that, whenever the goal of reading instruction is to memorize particular words, whole-word sound as well as segmented-word sound can be used. However, when more productive skills are aimed at, the most promising way of giving support is to present segmented-word sound, although only a nonsignificant tendency for transfer was found in the present study.     

How Research,Teaching, and Leadership Roles are Recommended to Male and Female Engineering Faculty Differently

Research in Higher Education - Across disciplines, male faculty spend more time on research than female faculty. Yet, women tend to teach and mentor students more hours than men (Misra et al. in...     

Comprehensive school-linked services: Implications for school psychologists

This article reviews the primary concepts underlying the current movement toward the provision of comprehensive school-linked services for children and families in low-income communities and the implications of this movement for school psychologists. The development of collaborative partnerships involving schools, public, and community-based agencies is an attempt to increase the availability and accessibility of needed services to children and families. The adoption of collaborative governance and a case management system is intended to offer an alternative to the proliferation of separate categorical programs and the associated lack of coordination among programs. The hope is to emphasize prevention and efficient early intervention. Collaborative efforts can provide an opportunity for role expansion among school psychologists. This possibility is discussed within a consultation model of service delivery that is consistent with the collaborative nature of school-linked services and with the preventive stance that orginated them. School psychologists are in a position to contribute to team consultation, case management, and needs assessment. Implications for training are drawn.