Relationships between intrinsic motivation, physical self-concept and satisfaction with life: a longitudinal study

In this study, we examined the relationships between intrinsic motivation, physical self-concept, and satisfaction with life using cross-lagged panel models analysed via structural equation models. The sample consisted of 293 participants (148 men, 145 women) aged 18-70 years who performed diverse types of physical exercise. Three alternative models were tested. The data were better represented by a model in which physical self-concept mediates the relationships between intrinsic motivation and satisfaction with life. Specifically, the direct effects of intrinsic motivation on physical self-concept, and of physical self-concept on satisfaction with life were significant, with the amount of explained variance increasing over time. In conclusion, people who perform physical exercise regularly, and who have fun over time will tend to have a better physical self-perception and, consequently, more psychological well-being.     

Exercise training and impaired glucose tolerance in obese humans

Individuals with impaired glucose tolerance (IGT) are at greater risk of developing diabetes than in normoglycaemia. The aim of this study was to examine the effects of 12-weeks exercise training in obese humans with IGT. Eleven participants (6 males and 5 females; 49±9 years; mean Body Mass Index (BMI) 32.4 kg · m(-2)), completed a 12-week brisk walking intervention (30 min per day, five days a week (d · wk(-1)), at 65% of age-predicted maximal heart rate (HR(max)). Anthropometric measurements, dietary intake, pulse wave velocity (PWV, to determine arterial stiffness) and blood pressure (BP) were examined at baseline and post intervention. Fasting blood glucose, glycosylated haemoglobin, insulin, blood lipids, indices of oxidative stress and inflammation (lipid hydroperoxides; superoxide dismutase; multimeric adiponectin concentration and high-sensitivity C-reactive protein) were also determined. Post intervention, PWV (9.08±1.27 m · s(-1) vs. 8.39±1.21 m · s(-1)), systolic BP (145.4±14.5 vs. 135.8±14.9 mmHg), triglycerides (1.52±0.53 mmol · L(-1) vs. 1.31±0.54 mmol · L(-1)), lipid hydroperoxides (1.20±0.47 μM · L(-1) vs. 0.79±0.32 μM · L(-1)) and anthropometric measures decreased significantly (P < 0.05). Moderate intensity exercise training improves upper limb vascular function in obese humans with IGT, possibly by improving triglyceride metabolism, which may subsequently reduce oxidative stress. These changes were independent of multimeric adiponectin modification and alterations in other blood biomarkers.     

Family assessment in K‐12 settings: Understanding family systems to provide effective,collaborative services

Professional school counselors, school psychologists, and other professionals working in K‐12 settings have a complex job of meeting the needs of all students. Often, referral to outside counseling is necessary; however, an effective and comprehensive counseling model advocates for school mental health professionals to employ a wide variety of techniques to ensure equitable distribution of services to all students and their families. This article explores using family assessment tools to support both students' academic achievement and their families within a school context. A case study illustrates how a professional school counselor could employ and collaborate with family assessment tools to support the student, family, and school systems. © 2009 Wiley Periodicals, Inc.     

Schooling effects on degree performance: A comparison of the predictive validity of aptitude testing and secondary school grades at Oxford University

This article examines the cause of school type effects upon gaining a first class degree at Oxford University, whereby for a given level of secondary school performance, private school students perform less well at degree level. We compare the predictive power of an aptitude test and secondary school grades (GCSEs) for final examination performance, using data from the Oxford Admissions Study. Both metrics are predictive of final degree performance but the school effects are only statistically robust for arts students. Private school students perform less well in final examinations relative to their GCSE results when compared with state school students, but they do not under perform relative to their aptitude test scores or in gross terms. It is therefore argued that teaching effects, associated with private school students, distort secondary school grades as an indicator of academic potential in higher education when compared to state school students.     

An instrument for assessing primary students’ knowledge of information graphics in mathematics

Information graphics have become increasingly important in representing, organising and analysing information in a technological age. In classroom contexts, information graphics are typically associated with graphs, maps and number lines. However, all students need to become competent with the broad range of graphics that they will encounter in mathematical situations. This paper provides a rationale for creating a test to measure students’ knowledge of graphics. This instrument can be used in mass testing and individual (in‐depth) situations. Our analysis of the utility of this instrument informs policy and practice. The results provide an appreciation of the relative difficulty of different information graphics, and provide the capacity to benchmark information about students’ knowledge of graphics. The implications for practice include the need to support the development of students’ knowledge of graphics, the existence of gender differences, the role of cross‐curriculum applications in learning about graphics, and the need to explicate the links among graphics.     

National Science Foundation Patronage of Social Science, 1970s and 1980s: Congressional Scrutiny, Advocacy Network, and the Prestige of Economics

Research in the social sciences received generous patronage in the late 1960s and early 1970s. Research was widely perceived as providing solutions to emerging social problems. That generosity came under increased contest in the late 1970s. Although these trends held true for all of the social sciences, this essay explores the various ways by which economists in particular reacted to and resisted the patronage cuts that were proposed in the first budgets of the Reagan administration. Economists?? response was three fold: to engage in joint lobbying with other social scientists, to tap into their authority as a respected policy player, and to influence the types of research financed by the patron. With interviews of the former lobbyist for the social scientists, the former director of the Economics program for the National Science Foundation, and a review of the archival records of economists and their scholarly society, we discuss how economists have claimed entitlement to patronage in the closing decades of the twentieth century. We observe a dynamic and productive relationship between politicians and researchers mediated by the National Science Foundation, where civil servants, lobbyist and public minded scientists, and self-serving grantees trade roles.     

Who pays the piper? The political economy of freedom of information

If freedom of information is fundamental to contemporary democracy, why have democratic countries differed so markedly in their willingness to pass laws enshrining formal rights of access to government files? This article demonstrates that an analysis grounded in comparative political economy can provide a compelling answer to this question. Specifically, it demonstrates that the more highly coordinated a country's economy, the less transparent it is likely to be. Through a comparison of the United States and Germany, this article argues that in coordinated market economies, ongoing negotiations between the state and the peak representative bodies provide privileged access to information about the government, and indeed privileged channels of influence over government action. Public access to official files threatens this privileged access. In less coordinated economies, however, firms lack this privileged access; they are likely to favor access laws as a partial substitute, especially since such laws are more consistent with the highly fragmented and competitive environment in which they operate. By further comparing Sweden and the United Kingdom, it also demonstrates the limits of this explanation, suggesting that historical sequences and classic political variables should also be taken into account.