Contextual factors affecting the utility of surrogates within exploratory search

In this paper we investigate how information surrogates might be useful in exploratory search and what information it is useful for a surrogate to contain. By comparing assessments based on artificially created information surrogates, we investigate the effect of the source of information, the quality of an information source and the date of information upon the assessment process. We also investigate how varying levels of topical knowledge, assessor confidence and prior expectation affect the assessment of information surrogates. We show that both types of contextual information affect how the information surrogates are judged and what actions are performed as a result of the surrogates.     

Biological applications of the “Filtered” Van der Pol oscillator

The present article deals with the development of an oscillatory model, which generates waveforms corresponding to ECG patterns. The present oscillatory system relies on coupling of oscillators derived from the famous VDP oscillator. We demonstrate that inducing a relaxation type of dynamics in the models contributes to their successful generation of ECG like signals. Furthermore, an interesting affinity is found, which associates the present models with a version of the well-known practical Wien Bridge oscillator. The presently discussed system relies on coupled elementary oscillator units. The present coupling is due to merely two units. The model, however, is likely to become even more realistic by coupling in the same manner an assembly of relatively many oscillators.     

Testing a model of antecedents and consequences of defensive pessimism and self-handicapping in school physical education

There has been very limited research on the use of self-worth protection strategies in the achievement context of school physical education (PE). Thus the aim of the present study was to examine some antecedents and consequences of defensive pessimism and self-handicapping. The sample comprised 534 British pupils (275 females, 259 males) recruited from two schools who responded to established questionnaires. Results of structural equation modelling analysis indicated that self-handicapping and defensive pessimism were positively predicted by fear of failure and negatively predicted by competence valuation. In addition, defensive pessimism was negatively predicted by physical self-concept. In turn, defensive pessimism negatively predicted enjoyment in PE and intentions to participate in future optional PE programmes. Self-handicapping did not predict enjoyment or intentions. Results from multi-sample structural equation modelling showed the specified model to be largely invariant across males and females. The findings indicate that although both strategies aim to protect one's self-worth, some of their antecedents and consequences in PE may differ.     

Reasoning About the Scope of Religious Norms: Evidence From Hindu and Muslim Children in India

Conflicts arise when members of one religion apply their norms to members of another religion. Two studies explored how one hundred 9- to 15-year-old Hindu and Muslim children from India reason about the scope of religious norms. Both Hindus and Muslims from a diverse Hindu–Muslim school (Study 1) and Hindus from a homogeneous Hindu school (Study 2) more often judged it wrong for Hindus to violate Hindu norms, compared to Muslim norms, and said the opposite for Muslims. In contrast, children judged it wrong for both Hindus and Muslims to harm others. Thus, even in a setting marred by religious conflict, children can restrict the scope of a religion's norms to members of that religion, providing a basis for peaceful coexistence.     

Exclusion from school in Scotland and across the UK: Contrasts and questions

This article draws on findings from the first cross-national study of school exclusion in the four jurisdictions of the UK. It casts new light on the crucial aspects of children's education that lead to school exclusion. It investigates the reasons for the UK disparities, as well as the policy and practice in place. The focus of this article is on a detailed analysis of the policy context in Scotland, where official permanent exclusion reduced to an all-time low of just five cases in 2014/15. This is much lower than in Northern Ireland and Wales and in stark contrast to England, where exclusions have increased substantially since 2012. Our analysis seeks to understand Scotland's success in reducing exclusion and offers new insight into the ways in which national policies and local factors more generally shape schools and their practices and the consequent impacts for children and young people more broadly in the UK.     

Does authentic assessment assure academic integrity? Evidence from contract cheating data

ABSTRACT

Contract cheating occurs when a student outsources their assessment to a third party, regardless of the third party’s relationship with the student, or whether money is exchanged. In higher education, there is a widespread belief that assessment design is a solution to the problem of contract cheating and that authentic assessment tasks are particularly effective. This research analysed two datasets – 221 assignment orders placed on academic custom writing websites and 198 assessment tasks in which contract cheating was detected – to investigate if authentic assessment can assure academic integrity. The authenticity of assessments was determined using five factors derived from the literature: frequency, fidelity, complexity, real-world impact and feed forward. Our analysis found that assessment tasks with no, some, or all of the five authenticity factors are routinely outsourced by students.