Science learning in a leisure setting

Most people visit a science center in order to satisfy specific leisure‐related needs; needs which may or may not actually include science learning. Falk proposed that an individual's identity‐related motivations provide a useful lens through which to understand adult free‐choice science learning in leisure settings. Over a 3‐year period the authors collected in‐depth data on a random sample of visitors to a large recently opened, hands‐on, interactive science center; collecting information on why people visited, what they did within the science center, what they knew about the subject presented upon entering and exiting, and what each individual's long‐term self‐perceptions of their own learning was. Presented is a qualitative analysis of visitor interviews collected roughly 2 years after the initial visit. Although there was evidence for a range of science learning outcomes, outcomes did appear to be strongly influenced by visitor's entering identity‐related motivations. However, the data also suggested that not only were the motivational goals of a science center visit important in determining outcomes, so too were the criteria by which visitors judged satisfaction of those goals; in particular whether goal satisfaction required external or merely internal validation. The implications for future informal science education research and practice are discussed. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47:194–212, 2010     

Lactate accumulation following isometric exercise training and its relationship with reduced resting blood pressure

The purpose of this study was (a) to assess lactate accumulation during isometric exercise, and to quantify the shifts in accumulation following isometric training; and (b) to relate any training-induced changes in lactate accumulation to reductions in resting blood pressure. Eleven male participants undertook isometric training for a 4-week period using bilateral-leg exercise. Training caused reductions in systolic, diastolic, and mean arterial resting blood pressure (of -4.9 ± 6.3 mmHg, P = 0.01; -2.6 ± 3.0 mmHg, P = 0.01; and -2.6 ± 2.3 mmHg, P = 0.001 respectively; mean ± s). These were accompanied by changes in muscle activity, taken as electromyographic activity to reach a given lactate concentration (from 114 ± 22 to 131 ± 27 mV and from 136 ± 25 to 155 ± 34 mV for 3 and 4 mmol · L(-1) respectively. Training intensity expressed relative to peak lactate was correlated with reduced resting systolic and mean arterial blood pressure. Training caused significant shifts in lactate accumulation, and reductions in resting blood pressure are strongly related to training intensity, when expressed relative to pre-training peak lactate. This suggests that higher levels of local muscle anaerobiosis may promote the training-induced reductions in resting blood pressure.     

The production of Australian professional development policy texts as a site of contest: The case of the federal quality teacher programme

This paper reveals how the provision of teacher professional development is conceptualised within the Australian Government Quality Teacher Programme (AGQTP) policy text and its predecessors, and uses these texts to infer the nature of the production practices associated with the development of these policies. The paper argues that multiple tensions within these texts gesture towards support for complex and contested approaches to professional development during the policy production process. To make sense of this contestation, the paper draws suggestively upon Bourdieu’s field theory, which conceptualises the social world as consisting of social spaces or “fields”, and extensions of his theory, which reveal fields as exerting considerable influence upon one another. The paper argues that “Quality Teacher Programme” texts infer support for more progressive, social democratic approaches to the provision of teacher professional development within the educational policy field, as well as more economistic and neoliberal approaches.