Reforming science in the school curriculum: a critical analysis

This article is concerned with the founding purposes and justification of natural science in the statutory school curriculum. It offers a critique of the strand of argument and the proposals for reform which have developed after the report Beyond 2000 focused on a particular usage of the term ‘scientific literacy’. Two lines of argument are criticised. These are, first, the view that a founding purpose of the science curriculum can be to prepare students for dealing as adults with socio‐political issues with a scientific aspect, and, second, that there is a well‐defined distinction to be drawn between the purposes of the statutory curriculum for pupils who will become professional scientists and others. The article suggests that these issues have not been the subject of sustained and open‐minded examination in recent years, and calls for such an examination.     

Examination of objective and subjective financial factors in predicting financial and retirement satisfaction in retirees

The present study examined predictors of retirement and financial satisfaction and contributed to existing literature by examining the incremental prediction offered by subjective estimates of financial resources and the impact of the Recession over more traditional objective measures. We hypothesized that objective financial resources, subjective financial resources, and the economic recession would predict retirement satisfaction and financial satisfaction, but that subjective estimates of financial well-being would be superior predictors of the dependent variables as compared to objective indices of financial resources.

A total of 245 retirees participated in the study, and results suggested that subjective and objective measures of finances were relatively independent. Further, consistent with hypotheses, most of the subjective financial measures provided significant incremental prediction of retirement and financial post-retirement satisfaction over that offered by objective financial indices. Subjective estimates of the impact of the Recession significantly predicted financial satisfaction post-retirement. Practical implications, limitations, and suggestions for future research are discussed.     

Understanding Youth Obesity and Media Use: Implications for Future Intervention Programs

Nearly six years have passed since the Physical Activity and Health: A Report of the Surgeon General (USDHHS, 1996) described the health and fitnesa status of Amrica's yarth. The Sugeon Guxd's Call to Action to prevent and Decrease Overweight and Obesity (USDHHS, 2001) provides a camprehensive review of research on the epidemiology, health risks, and prevalence of obesity in all segments of the poplation. Increasinngly, children and adolescents are turning to sedentary kisure-time activities. Media use has been linked to decread physical activity levels, incearsed BMI, and increased high-enugy food intake. This review of litnature pravides a comprehensive examination of the influence media use has on youth adiposity, dietary habits. and physical activity. Current and future intervention programs to decrease sedentary behavior in children are also highlighted. Reducing media use (including television, videaape viewing, nonacademic computer use, and video game playing) in youth cau address leisure-time sedentary behaviors. Future intervention program, using run interdisciplinary appach, need to decrease leisure-time sedentary behaviors while promoting active lifestyles.     

The use of the intensity gradient and average acceleration metrics to explore associations with BMI z-score in children

ABSTRACT

This study used the intensity gradient (IG) and average acceleration metrics to describe children’s activity profiles and explore associations with body mass index (BMI) z-score. Two hundred and forty-six children (n = 138 girls) aged 9.6 ± 1.4 years wore a wrist-mounted ActiGraph wGT3X-BT accelerometer for 7 days on their non-dominant wrist. Physical activity (PA) metrics captured included: the IG which describes the intensity distribution of accelerations across the 24 h monitoring period; average acceleration which provides a measure of the volume of activity; total moderate-to-vigorous PA (MVPA) and inactive time. Acceleration was averaged over 5s epochs. Finally, BMI z-score was calculated for each participant. Average acceleration was negatively associated with BMI z-score (p < 0.05) independent of age and gender but not IG. The IG was negatively associated with BMI z-score independent of potential correlates and average acceleration. Total MVPA was not associated with BMI-z score. The IG and average acceleration metrics may be used to explore the independent or cumulative effects of the volume and intensity distribution of activity upon measures of health and well-being in children to inform specific activity recommendations.     

Welche bildungswissenschaftlichen Inhalte sind wichtig in der Lehrerbildung?

In reviews of university teacher training, the parts of the curriculum based on educational science are often criticized as missing practical relevance and being non-cumulative. At the same time, uncertainty exists regarding which educational science based content is important for teacher candidates. The objective of the Delphi study presented here was the identification of core educational science content in university training. To this aim, a survey was carried out amongst 49 experts from different subject areas and phases of teacher training in three rounds using a standardized questionnaire. In the first round, 213 topics were specified, which were then assessed by experts regarding their importance for various aspects of the teaching profession. In the second and third rounds, which had the objective of reducing the number of topics, the experts chose a limited number of topics based on their relevance for university teacher training and for the practical success of teaching itself. The results show that the original list was comprehensive and that there is a consensus among most of the experts on their respective importance for teaching training.     

Investigating changes in pedagogical knowledge and skills from pre-service to the initial year of teaching

This study examined the levels of pedagogical knowledge and skills as perceived by student teachers who were enrolled in the Post Graduate Diploma in Education program at the National Institute of Education, Singapore, from the beginning of their initial teacher preparation program to the end of their first year of teaching. Their perceptions were assessed using the Pedagogical Knowledge and Skills in Teaching (PKST) survey which comprised six factors, namely, Student Learning, Lesson Planning, Instructional Support, Accomodating Diversity, Classroom Management, and Care and Concern. A sample of 812 student teachers participated in the study. The MANOVA conducted showed that there were significant increases in both their pedagogical knowledge and skills in teaching in all six factors from the start of their initial teacher preparation (ITP) program till the end of their first year of teaching. However, between the exit from the program to the end of the first year of teaching, they only perceived that their level of pedagogical knowledge in classroom management and care and concern continued to increase significantly. In the case of self-perceived skills, their level increased significantly between entry and exit of the program for all factors, except for care and concern, while the increase between the exit and first year of teaching was significant for all six factors. These results may have implications for preservice teacher education and this will be discussed in this article.     

The nature and substantiation of official sexual abuse reports

A representative sample of 796 sexual abuse reports from New York State in 1985 was studied to explore factors associated with the decision to substantiate or unsubstantiate these reports. This study focused on the age, sex, and ethnicity of the subject child, and the source of the report as predictors of case substantiation. Substantiation rates tended to increase with the age of the child although this was more characteristic of reports involving female than male victims. Overall, reports involving female children were more likely to be substantiated than those involving male children. Ethnicity of the child showed no significant relationship to substantiation. Source of report, however, showed a strong relationship to case determination, with mandated reports found to be substantiated at a rate 13% higher than reports from non-mandated sources.     

Teachable Agents and the Protégé Effect: Increasing the Effort Towards Learning

Betty’s Brain is a computer-based learning environment that capitalizes on the social aspects of learning. In Betty’s Brain, students instruct a character called a Teachable Agent (TA) which can reason based on how it is taught. Two studies demonstrate the protégé effect: students make greater effort to learn for their TAs than they do for themselves. The first study involved 8th-grade students learning biology. Although all students worked with the same Betty’s Brain software, students in the TA condition believed they were teaching their TAs, while in another condition, they believed they were learning for themselves. TA students spent more time on learning activities (e.g., reading) and also learned more. These beneficial effects were most pronounced for lower achieving children. The second study used a verbal protocol with 5th-grade students to determine the possible causes of the protégé effect. As before, students learned either for their TAs or for themselves. Like study 1, students in the TA condition spent more time on learning activities. These children treated their TAs socially by attributing mental states and responsibility to them. They were also more likely to acknowledge errors by displaying negative affect and making attributions for the causes of failures. Perhaps having a TA invokes a sense of responsibility that motivates learning, provides an environment in which knowledge can be improved through revision, and protects students’ egos from the psychological ramifications of failure.     

Development of a questionnaire for assessing students’ perceptions of the teaching and learning environment and its use in quality assurance

There are few available instruments that assess students’ perceptions of university teaching and learning environments and can be used to provide diagnostic feedback, at the degree or program level, on the quality of the environment. This article describes the development, testing and application, for quality assurance purposes, of a suitable instrument. The final version of the questionnaire includes scales seeking students’ feedback on nine facets of the teaching and learning environment. There are also scales seeking students’ perceptions of the influence of the environment on the development of eight generic capabilities. The 17 scales have been shown to be reliable. Validity has been established by the use of faculty panels to select appropriate generic capabilities and by testing, by structural equation modelling, of an underlying model of the nurturing of capabilities by the environment. The questionnaire has proved to be highly diagnostic when used for quality assurance purposes. A case is given showing how the questionnaire identifies strengths and weaknesses, which can lead to action plans for quality improvement.