Science teachers and scientific argumentation: Trends in views and practice

Current research indicates that student engagement in scientific argumentation can foster a better understanding of the concepts and the processes of science. Yet opportunities for students to participate in authentic argumentation inside the science classroom are rare. There also is little known about science teachers' understandings of argumentation, their ability to participate in this complex practice, or their views about using argumentation as part of the teaching and learning of science. In this study, the researchers used a cognitive appraisal interview to examine how 30 secondary science teachers evaluate alternative explanations, generate an argument to support a specific explanation, and investigate their views about engaging students in argumentation. The analysis of the teachers' comments and actions during the interview indicates that these teachers relied primarily on their prior content knowledge to evaluate the validity of an explanation rather than using available data. Although some of the teachers included data and reasoning in their arguments, most of the teachers crafted an argument that simply expanded on a chosen explanation but provided no real support for it. The teachers also mentioned multiple barriers to the integration of argumentation into the teaching and learning of science, primarily related to their perceptions of students' ability levels, even though all of these teachers viewed argumentation as a way to help students understand science. © 2012 Wiley Periodicals, Inc. J Res Sci Teach 49: 1122–1148, 2012     

The Impact of Alumni Status on Institutional Giving by Faculty and Staff

This study explores the association between propensity toward giving and personal and positional characteristics of faculty and staff across 3 years within a large, public, multi-campus higher education institution. Informed by the literatures on organizational identity and commitment, faculty and staff giving, and the higher education workforce, the study employs a hurdle analysis to estimate the predictors of likelihood of donating (the hurdle) and the amount given among those who donate. Following up on earlier research by the authors that demonstrated that academic employees and employees who are institutional alumni are more likely to give, the present study explores the interaction between these roles and offers a more powerful model for predicting the amount given. The results of this study have implications for understanding how organizational commitment and identification may be relevant in addressing giving, for institutional fundraising, and for building institutional loyalties.     

Being-Together: Thinking through Technologically Mediated Sociality and Community

Our sociality is increasingly enacted through technology. This essay argues that the relationship between the technological mediation of social relations and the ways in which these practices are understood conceptually needs to be critiqued, rethought, and extended. Current approaches tend to accentuate the individual to the detriment of the social and often to understand technology instrumentally. Jean-Luc Nancy's notion of being singular plural and his understanding of the relations between singular beings and of ecotechnics are discussed briefly to illustrate an alternate direction for considering ways of being-together in Western techno-society.     

“Resistance to Extinction” of Two Patterns of Verbal Reinforcement

Evaluation of large-scale educational programs is problematical because of inherent bias in the assignment of treatment and comparison groups. As a result, the ANOVA design is inapplicable, and even ANCOVA designs can give rise to serious regression artifacts. Data from the Follow Through Program are used to illustrate this point: samples were kindergarteners in the Responsive Education model and in best-match comparison classrooms. The criterion variable was MRT readiness level at posttest. Lord’s True Scores ANCOVA was shown to be a more powerful method in correcting for initial differences than the conventional ANCOVA. These data also were used to illustrate the problem of non-uniformity of program implementation across sites and classrooms. An index of implementation level by classroom was used to predict outcome levels, and the potential of this approach as an adjunct in comparative analysis was discussed.     

The Influence of Class-Size Variations on Cognitive and Affective Learning of College Freshmen

The influence of class-size variations on cognitive and affective learning was measured by use of a 15-concept semantic differential scale and a teacher-made test. A Non-equivalent Control Group design was employed with two groups of college freshmen (N = 320). After attending a weekly lecture, 160 Ss were divided into eight permanent discussion sections (twenty Ss each) for two weekly meetings. Small-group discussions emphasized critical examination of feelings and their impact on evaluation of personal, social, and professional problems. The remaining 160 Ss (serving as a control) were divided into three conventional classes (fifty-five Ss each) for similar purposes. No significant differences were revealed from an ANOCOVA (analysis of covariance) analysis. Within the limits of this study, it appeared that large-group lectures combined with small-group discussions, were as effective as conventional classes of fifty to sixty Ss.     

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.     

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.