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

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.     

Born Again or ‘Dumbing Down’? Cultural Trends in the 1990s

A person who everyday looks upon a beautiful picture, reads a page from some good book, and hears a beautiful piece of music will soon become a transformed person – one born again [Labour, 1997]. Across the world, music audiences are being eroded by an array of domestic electronic attractions. Habitual concertgoers fear to venture into the inner city after dark, or get deterred by traffic jams and parking restrictions. A new generation raised on television soundbites and instant hamburgers has been jaggedly desensitised to the stately magniloquence of an hour-long symphony. The sharing of music within families has been blighted by the decline of the nuclear family. Music teaching, insofar as it is still provided in public school systems, has been rendered almost worthless by a politically correct tendency to treat all musics as equal – the primitive with the refined, the commercial with the spiritual [Lebrecht, 1996].     

Facilitators of and barriers to school psychologists' social–emotional/behavioral practices

Using data from a national survey of school psychologists we investigated (a) the extent to which school psychologists supported students' social–emotional and behavioral well-being using data and evidence-based practices programming, (b) how facilitators and barriers impacted school psychologists' service delivery in these areas, and (c) how participants' demographic characteristics predicted facilitators to these practices. The survey was administered to randomly selected National Association of School Psychologists' members. One hundred ninety-nine full-time, school-based school psychologists (24% response rate) completed the survey. Results indicated more practitioners reported using data to design, implement, and evaluate evidence-based strategies for social–emotional and behavioral supports (M = 3.32, SD = 0.90) than reported using evidence-based strategies themselves in these same areas (M = 3.10, SD = 1.05). School psychologists who reported more facilitators were more likely to use data and engage in evidence-based practices related to social–emotional and behavioral supports for students. Results also indicated certain barriers impeded school psychologists' practices in these areas. Few demographic characteristics predicted the presence of facilitators or barriers. Findings from the current study extend the extant literature by providing empirical data on facilitators of and barriers to services related to school psychologists' use of data and evidence-based practices in these areas.     

Anthropogenic emission is the main contributor to the rise of atmospheric methane during 1993–2017

Atmospheric methane (CH₄) concentrations have shown a puzzling resumption in growth since 2007 following a period of stabilization from 2000 to 2006. Multiple hypotheses have been proposed to explain the temporal variations in CH₄ growth, and attribute the rise of atmospheric CH₄ either to increases in emissions from fossil fuel activities, agriculture and natural wetlands, or to a decrease in the atmospheric chemical sink. Here, we use a comprehensive ensemble of CH₄ source estimates and isotopic δ¹³C-CH₄ source signature data to show that the resumption of CH₄ growth is most likely due to increased anthropogenic emissions. Our emission scenarios that have the fewest biases with respect to isotopic composition suggest that the agriculture, landfill and waste sectors were responsible for 53 ± 13% of the renewed growth over the period 2007–2017 compared to 2000–2006; industrial fossil fuel sources explained an additional 34 ± 24%, and wetland sources contributed the least at 13 ± 9%. The hypothesis that a large increase in emissions from natural wetlands drove the decrease in atmospheric δ¹³C-CH₄ values cannot be reconciled with current process-based wetland CH₄ models. This finding suggests the need for increased wetland measurements to better understand the contemporary and future role of wetlands in the rise of atmospheric methane and climate feedback. Our findings highlight the predominant role of anthropogenic activities in driving the growth of atmospheric CH₄ concentrations.     

You've got mail: hospital postcards as a reflection of health care in the early twentieth century.

PURPOSE: The author shows that not only can the illustrations on the front of postcards reveal a considerable amount of information about hospitals in the early twentieth century, but that the messages, addresses, captions, postmarks, and stamps on the back of postcards also offer a valuable glimpse into the lives of ordinary citizens and their interactions with the health care system. METHOD: In addition to a literature review on postcards and their history and use, particularly in the depiction of health care, the author reviews the postcards in her own collection, which includes a variety of hospital postcards from this time period. CONCLUSIONS: Early hospital postcards provide a framework for examining individual elements of postcards and show how postcards can be used as key sources in historical research on health care in the early 1900s.