Motivational mechanisms and schedule-induced behavioral stereotypy

In two experiments, behavioral stereotypies elicited by scheduled presentations of food and water were compared. In Experiment 1, pigeons were exposed to a fixed-time 30-sec (FT 30-sec) schedule of food or water deliveries with a brightening keylight stimulus signaling time to the unconditioned stimulus (UCS) on each trial. Food and water presentations both produced terminal autoshaped keypecking that was similarly distributed in the trial but differed in response topography and persistence. Locomotor interim behavior was different in the two motivational conditions: With food presentations, it consisted of a “retreat” to the rear of the chamber after UCS termination, followed by “pacing” in the midportion of trials. The water schedule produced very little locomotor activity with no regular distribution in the trial. Experiment 2, using a random-time 30-sec (RT 30-sec) schedule, showed that the differences in interim locomotor behavior persisted in the absence of temporal predictability of the UCS and the keypecking terminal response. The results are taken to support Timberlake’s (1983a) behavior-system theory.     

Stability of overt Type A behaviors in children: results from a one-year longitudinal study

This paper describes the degree of similarity between repeated ratings (taken 1 year apart) of overt Type A behaviors in 2 samples totaling 633 children. The measure of overt Type A behaviors was the Matthews Youth Test for Health (MYTH), which was completed by the children's classroom teacher. Results showed that correlations between repeated MYTH ratings approximated .55 and in general increased somewhat with the children's school grade, although correlations between repeated ratings of competitive achievement behaviors of boys residing in an affluent eastern suburb were somewhat lower than above. The degree of similarity across 1 year in children's Type A behaviors is comparable to that found for adult Type A behaviors and for other cardiovascular risk factors in children. The discussion includes a consideration of assumptions underlying research on the origins of Type A behavior and suggests that etiological factors in the development of Type A might profitably be studied in primary school-aged children.     

Racialised Schooling, 'Ethnic Success' and Asian-Australian Students

Based on discussions with Asian-Australian young women at a mixed-sex, Australia State high school, this article argues that the pro-school conformity of Asian-Australian young women sets them in a problematic and precarious relationship to the material and symbolic and processes of racialisation. The first part of the article identifies the limitations of research into the pro-school/anti-school orientations of minority students, arguing that most accounts are based on theories of culture, acculturation, class and gender, and class and race that neglect an analysis of race and sex. I then argue that practices of racialisation and sexualisation actually sustain pro-school culture and Asian female group associations. While these formations are effective in securing Asian female educational success, they are also problematic because they limit the educational possibilities and employment opportunities of Asian young women in Australia.     

Idealisation and Galileo’s Pendulum Discoveries: Historical, Philosophical and Pedagogical Considerations

Galileos discovery of the properties of pendulum motion depended on his adoption of the novel methodology of idealisation. Galileos laws of pendulum motion could not be accepted until the empiricist methodological constraints placed on science by Aristotle, and by common sense, were overturned. As long as scientific claims were judged by how the world was immediately seen to behave, and as long as mathematics and physics were kept separate, then Galileos pendulum claims could not be substantiated; the evidence was against them. Proof of the laws required not just a new science, but a new way of doing science, a new way of handling evidence, a new methodology of science. This was Galileos method of idealisatioin. It was the foundation of the Galilean–Newtonian Paradigm which characterised the Scientific Revolution of the 17th century, and the subsequent centuries of modern science. As the pendulum was central to Galileos and Newtons physics, appreciating the role of idealisation in their work is an instructive way to learn about the nature of science.     

Opportunities Lost: The Pendulum in the USA National Science Education Standards

This article is based on my recent book Time for Science Education (Plenum Publishers, 1998). It begins with the treatment afforded the pendulum in the US National Science Education Standards, and a number of other contemporary curriculum documents. It notes that all of these documents advocate liberal, or wide, goals for science education, including students understanding something of the historical and cultural significance of science. It notes that all the documents ignore the very significant role played by the pendulum in the foundation of modern science, in solving the longitude problem, and in enabling the first accurate clocks to be constructed. There are thus lost opportunities for realising the laudable goals that the Standards set for US science education. Finally, it is claimed that realising these cultural goals for science education requires that the history and philosophy of science be more routinely incorporated into preservice and inservice courses for science teachers.     

Editorial

Science &; Education -     

Adjustment outcomes of developmental placement: A longitudinal study

Over the years, educators and psychologists have recommended delaying school entry and have developed alternative interventions for young children identified as unready for school. These developmental placement interventions, including readiness kindergartens and pre‐first classes, were developed to avoid both academic and social‐emotional problems in schools. However, the efficacy of these programs has not been proven. This study examined school adjustment outcomes and emotional and learning difficulties, both short‐term and longitudinally, for students who participated in readiness kindergartens and pre‐first classes, as well as for control groups of students. Significant differences were noted in retention rates, dropout rates, and special education placement rates. © 1999 John Wiley & Sons, Inc.