Effects of autonomous motivational priming on motivation and affective responses towards high-intensity interval training

This study examined the effect of autonomous motivational priming on motivation, attitudes and intentions towards high-intensity interval training (HIT). Participants (N = 42) performed a graded exercise test to determine their peak aerobic power (W_PEAK). At a subsequent testing session, participants were randomised to complete either an autonomous or neutral motivational priming task followed by a 10 × 1 HIT exercise protocol, alternating 1-min bouts of hard (70% W_PEAK) and light (12.5% W_PEAK) exercises for 20 min. Participants primed with autonomous motivation reported greater enjoyment, P = .009, η_p² = .16, and perceived competence, P = .005, η_p² = .18, post-exercise compared to those in the neutral priming condition. Participants in the autonomous motivational priming condition also reported more positive attitudes, P = .014, η_p² = .14, towards HIT; however, there was no difference between the conditions for task motivation during HIT or intentions, P = .53, η_p² = .01, to engage in HIT. These findings highlight autonomous motivational priming as a method of enhancing affective and motivational experiences regarding HIT.     

Methodological-conceptual problems in the study of chimpanzees’ folk physics: How studies with adult humans can help

In three experiments, we examined humans’ folk physics (i.e., a naturally occurring and spontaneous understanding of the physical world), using variations of problems used to study chimpanzees’ folk physics. Presented with trap-tube problems in two experiments, adult humans showed an unnecessary bias to insert a stick into the end of the tube farthest from the reward to push it out the other end. When presented with trap-table problems with ineffective trapping holes, people unnecessarily avoided the side with the hole. The similarity of humans’ and chimpanzees’ behavior on these tasks highlights methodological and conceptual problems in studies of chimpanzees’ folk physics and suggests alternative explanations for their behavior.     

Negative body talk as an outcome of friends’ fitness posts on social networking sites: body surveillance and social comparison as potential moderators

A sample of 488 male and female young adults completed an online survey in effort to explore whether social networking sites (SNSs) are a way in which sociocultural influences regarding body image are propagated. Negative body talk was predicted as an outcome to frequent exposure to friends’ fitness posts (e.g. pictures and status updates about working out, fitness inspiration quotations/images, etc.); we also explored whether this relationship was moderated by body surveillance and social comparison. Results revealed that friends’ fitness posts were positively associated with negative body talk, and this relationship was strongest for individuals who reported a higher tendency to compare themselves to others – even after controlling for body satisfaction, healthy eating and exercise behaviors, and frequency of SNS use.     

论毛泽东关于共产党人"讲学习"的思想

毛泽东从中国革命和建设实践的需要出发,提出了共产党人必须"讲学习",要努力学习马克思主义理论,学习历史知识,学习经济,学习管理;"讲学习"必须坚持科学的态度和方法.     

The characterization of four gene expression analysis in circulating tumor cells made by Multiplex-PCR from the AdnaTest kit on the lab-on-a-chip Agilent DNA 1000 platform

Introduction

Nowadays, on-a-chip capillary electrophoresis is a routine method for the detection of PCR fragments. The Agilent 2100 Bioanalyzer was one of the first commercial devices in this field. Our project was designed to study the characteristics of Agilent DNA 1000 kit in PCR fragment analysis as a part of circulating tumour cell (CTC) detection technique. Despite the common use of this kit a complex analysis of the results from a long-term project is still missing.

Materials and methods

A commercially available Agilent DNA 1000 kit was used as a final step in the CTC detection (AdnaTest) for the determination of the presence of PCR fragments generated by Multiplex PCR. Data from 30 prostate cancer patients obtained during two years of research were analyzed to determine the trueness and precision of the PCR fragment size determination. Additional experiments were performed to demonstrate the precision (repeatability, reproducibility) and robustness of PCR fragment concentration determination.

Results

The trueness and precision of the size determination was below 3% and 2% respectively. The repeatability of the concentration determination was below 15%. The difference in concentration determination increases when Multiplex-PCR/storage step is added between the two measurements of one sample.

Conclusions

The characteristics established in our study are in concordance with the manufacturer’s specifications established for a ladder as a sample. However, the concentration determination may vary depending on chip preparation, sample storage and concentration. The 15% variation of concentration determination repeatability was shown to be partly proportional and can be suppressed by proper normalization.Key words: lab-on-a-chip devices, capillary electrophoresis, multiplex PCR, circulating tumour cells, Agilent DNA 1000 kit     

英国公民教育现状及社交媒介与公民教育的关系——伊恩·戴维斯教授访谈录

为了更全面地了解英国公民教育现状以及当代世界公民教育的新问题,采访人与英国约克大学教育学教授、教育系副主任、教育与社会公正研究中心主任、教育研究所主任,著名的公民教育专家伊恩·戴维斯进行了访谈,对英国公民教育国家课程标准向品格教育的转向进行讨论,辨别什么是好的公民教育,探讨如何评估公民教育效果,思考社交媒介等新技术与公民教育的关系。在访谈的过程中,比较了中英两国的教育实践,总结了部分公民教育经验。     

A Review of the Research on Internet Addiction

Research indicates that maladaptive patterns of Internet use constitute behavioral addiction. This article explores the research on the social effects of Internet addiction. There are four major sections. The Introduction section overviews the field and introduces definitions, terminology, and assessments. The second section reviews research findings and focuses on several key factors related to Internet addiction, including Internet use and time, identifiable problems, gender differences, psychosocial variables, and computer attitudes. The third section considers the addictive potential of the Internet in terms of the Internet, its users, and the interaction of the two. The fourth section addresses current and projected treatments of Internet addiction, suggests future research agendas, and provides implications for educational psychologists.     

Europäisches Bewusstsein: Zur Definition Eines Vielschichtigen Begriffes und Seiner Bildungstheoretischen Bedeutung

EUROPEAN CONSCIOUSNESS: TOWARDS DEFINING A COMPLEX CONCEPT AND ITS EDUCATIONAL SIGNIFICANCE – The present study aims at a definition of ‘European consciousness’. In particular, it draws on Henri Tajfel’s theory of social identity as well as Roland Wakenhut’s and Jutta Gallenmüller’s moral determination of national consciousness. European consciousness is then defined as a sense of belonging which, depending on certain identification structures and social perspectives, can take such distinct forms of moral consciousness as ‘Eurocentrism’, ‘European patriotism’, or ‘reflective European consciousness’. Making reference to Wolfgang Klafki’s notion of general education, it is finally argued that the emancipatory contribution of schooling to greater European integration consists in mediating precisely this last way of thinking.     

Moral Responsibility for Harm Caused by Computer System Failures

When software is written and then utilized in complex computer systems, problems often occur. Sometimes these problems cause a system to malfunction, and in some instances such malfunctions cause harm. Should any of the persons involved in creating the software be blamed and punished when a computer system failure leads to persons being harmed? In order to decide whether such blame and punishment are appropriate, we need to first consider if the people are “morally responsible”. Should any of the people involved in creating the software be held morally responsible, as individuals, for the harm caused by a computer system failure?This article provides one view of moral responsibility and then discusses some barriers to holding people morally responsible. Next, it provides information about the Therac-25, a computer-controlled medical linear accelerator, and its computer systems failures that led to deaths and injuries. Finally it investigates whether two key people involved in the Therac-25 case could reasonably be considered to have some degree of moral responsibility for the deaths and injuries. The conclusions about whether or not these people were morally responsible necessarily rest upon a certain amount of speculation about what they knew and what they did. These limitations, however, should not cause us to conclude that discussions of moral responsibility are fruitless. In some cases, determinations of moral responsibility may be made and in others the investigation is still worthwhile, as the article demonstrates.