Identifying potential “dropouts” from college physics classes

Hudson and Rottman (1981) established that mathematics ability is probably a secondary factor influencing dropout from college physics courses. Other factors remain to be found for predicting who will drop out or at least have difficulty with the course. When mathematics ability is coupled with general indicators of performance (total GPA and ACT natural science), prediction of performance for those who complete the course is substantially improved. Moreover, discriminant analyses reveal who will have at least some difficulty, but not who will drop out. The problem of isolating specific weaknesses of students who have difficulty persists. Physics achievement appears to depend on mathematics ability only to the extent that students possess the ability to utilize mathematics knowledge for solving physics problems. Identification of the specific aspects of this ability as well as the specific deficiencies leading to dropout should be the object of future research. For the present, interviews might be more revealing than group testing methods.     

Emerging issues concerning the future directions of Australian senior science education: The Queensland experience

Australia's changing political, social and economic agendas have triggered a critical analysis of school curriculum. Part of this consideration has been concern over the future of science education within the context of senior schooling. Following the completion of the Senior Science Future Directions Project commissioned by the Queensland Board of Senior Secondary School Studies, fifteen issues were identified. These issues, grouped by the needs of the science disciplines, society and the individual student, are discussed with the view of understanding the future design of senior science syllabuses. Specializations: biology teacher education, science curriculum development. Specializations: professional development, curriculum design and evaluation. Specializations: professional development, science teaching.     

Affection and cognition in transaction and the mapping of cultural space

Summary In this article, an attempt has been made to treat affection and cognition “transactionally” and to report work underway in the development of a rationale for mapping “sign components” of “cultural space.” The development of statistical procedures and applications remains to be undertaken.     

A New Way of Thinking about Social Location in Science

The Durkheimian concept of the density of social relationships may prove more fruitful than the historical materialist notion of a social hierarchy for thinking about the social location of epistemic agents in science. To define a scientist’s social location in terms of the density of her professional relationships with other scientists permits us to give a more precise characterization of marginalization and thus to formulate more testable hypotheses about marginalized groups in science. The notion of social density helps to explain not only how some individual scientists are more likely than others to get a hearing for their ideas, but also how scientific inquiry flourishes more in some societies than in others.

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Overtraining,extinction, and reversal learning by kittens

Two groups of kittens received 0 or 112 overtraining trials after learning a brightness discrimination. Both groups underwent extinction of differential choice responses and then learned the reversed brightness discrimination. The overtrained and nonovertrained animals did not differ significantly in rate of reversal learning, and both groups showed a significant preference for the old positive stimulus when differential reinforcement was reinstated in reversal training. According to Sutherland and Mackintosh, these results show that kittens lack stable attention and should be inept in dealing with reversal and probability problems. This is not the case, raising doubts about the adequacy of their account of interspecies differences in learning by vertebrates.     

A study of conceptual development in early childhood

This paper reports part of a study which investigated young children's conceptions of scientific and technological phenomena and the conceptual change that occurs during the teaching of science in pre-school, Transition/Year One and Year Two/Three classrooms. Science lessons from each school/centre were audio and video taped for a period of six months. Informal interviewing of teachers occurred in direct response to lessons observed. Informal interviewing of children was conducted to determine current scientific thinking in relation to the science lessons presented by the teacher. Two main elements emerged. First, different types of teacher-child interactions were evident during the science lessons observed and it was found that specifically focused interactions led to conceptual development in young children. Second, children's views (whether scientific or not) were maintained over a three month period.