The impact of cognitive styles on perceptual distributed multimedia quality

This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2003 John Wiley & Sons, Inc.Multimedia technology has been widely used in web-based instruction, but previous studies have indicated that individual differences, especially cognitive styles, have significant effects on users’ preferences with respect to presentation of multimedia content. However, such research has thus far neglected to examine the effect of cognitive styles on users’ subjective perceptions of multimedia quality. This study aims to examine the relationships among users’ cognitive styles, the multimedia Quality of Service (QoS) delivered by the underlying network, and Quality of Perception (QoP), which encompasses user levels of enjoyment and understanding of the informational content provided by multimedia material. Accordingly, 132 users took part in an experiment in which they were shown multimedia video clips presented with different values of two QoS parameters (frame rate and colour depth). Results show that, whilst the two QoS parameters do not impact user QoP, multimedia content and dynamism levels significantly influence the user understanding and enjoyment component of QoP

A cognitive approach to user perception of multimedia quality: An empirical investigation

Whilst multimedia technology has been one of the main contributing factors behind the Web's success, delivery of personalized multimedia content has been a desire seldom achieved in practice. Moreover, the perspective adopted is rarely viewed from a cognitive styles standpoint, notwithstanding the fact that they have significant effects on users’ preferences with respect to the presentation of multimedia content. Indeed, research has thus far neglected to examine the effect of cognitive styles on users’ subjective perceptions of multimedia quality. This paper aims to examine the relationships between users’ cognitive styles, the multimedia quality of service delivered by the underlying network, and users’ quality of perception (understood as both enjoyment and informational assimilation) associated with the viewed multimedia content. Results from the empirical study reported here show that all users, regardless of cognitive style, have higher levels of understanding of informational content in multimedia video clips (represented in our study by excerpts from television programmes) with weak dynamism, but that they enjoy moderately dynamic clips most. Additionally, multimedia content was found to significantly influence users’ levels of understanding and enjoyment. Surprisingly, our study highlighted the fact that Bimodal users prefer to draw on visual sources for informational purposes, and that the presence of text in multimedia clips has a detrimental effect on the knowledge acquisition of all three cognitive style groups

Users' trust in information resources in the Web environment: a status report

This study has three aims; to provide an overview of the ways in which trust is either assessed or asserted in relation to the use and provision of resources in the Web environment for research and learning; to assess what solutions might be worth further investigation and whether establishing ways to assert trust in academic information resources could assist the development of information literacy; to help increase understanding of how perceptions of trust influence the behaviour of information users

Measuring quality of perception in distributed multimedia: Verbalizers vs. imagers

This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2008 ElsevierThis paper presents the results of a study which investigated the impact of cognitive styles on perceptual multimedia quality. More specifically, we examine the different preferences demonstrated by verbalizers and imagers when viewing multimedia content presented with different quality of service (QoS) levels pertaining to frame rates and color depth. Recognizing multimedia’s infotainment duality, we used the quality of perception (QoP) metric to characterize perceived quality. Results showed that in terms of low and high dynamisms clips, the frame rate at which multimedia content is displayed influences the levels of information assimilated by Imagers. Whilst black and white presentations are shown to be beneficial for both Biomodals and Imagers in order to experience enhanced levels of information assimilation, Imagers were shown to enjoy presentations in full 24-bit colour

Perceived quality of multimedia educational content: A cognitive style approach

This is the post-print version of the Article. The oficial published version can be accessed from the link below - Copyright, 2006 SpringerCognitive styles influence the way how humans process information, with previous research demonstrating that they have significant effects on student learning in multimedia environments. On the other hand, the perceptual quality of the human multimedia experience is notoriously difficult to measure. In this paper, we report the results of an empirical study, which investigated the relationship between user cognitive styles and perceptual multimedia quality, in which users had the possibility to specify their desired Quality of Service settings — in terms of frame rates and color depth. Results show that whilst color choice is impacted by a participant's cognitive style, such Quality of Service parameters do not significantly affect perceived multimedia quality, and that users do not necessarily choose optimum presentation settings to enhance their perceived enjoyment and assimilation of multimedia informational content

M-commerce perceptual quality of service

Copyright @ 2003 CAiS

Graduate perceptions of a UK university based coach education programme, and impacts on development and employability

This investigation explored graduates’ perceptions and experiences of a Higher Education (HE) coach education programme. It aimed to identify if this formal learning source had impacted upon attendees’ development and employability, while uncovering information to potentially inform future provision. 10 graduate coaches who had completed coaching modules at a United Kingdom (UK) HE institution participated in in-depth semi-structured interviews. Graduate coaches highlighted a positive educational experience that developed critical analytical skills, assisted in their perceived accelerated development, and enhanced employability. Using Carl Rogers’ work as a framework to analyse the data, it is demonstrated that the findings collectively offer implicit support for the adoption of a person-centred educational philosophy. Further research and debate is identified as necessary to ascertain whether the person-centred approach offers a legitimate and effective alternative form of coach education.Peer reviewe

Advocacy for looked after children and children in need: achievements and challenges

This briefing paper offers a summary of the key findings of ‘Advocacy for looked after children and children in need: achievements and challenges’, the first national study of children’s advocacy in England. The study was prepared for the Department of Health and the DfES. The study was undertaken for a number of reasons: despite the relatively rapid increase in the number of advocacy services for children and young people over the last decade or so, relatively little is known about the extent to which advocacy makes a positive difference to the lives of individual children or to developments in children’s services more generally. Evidence also suggests that, in order to reduce the scope for conflict or confusion, there is a need to raise awareness about the principles and practices of advocacy among practitioners and policy makers working in the field of children’s health and social care. This study sought to address these gaps in knowledge and to create a platform for an evidence-based debate about the future of advocacy for children and young people

What are the barriers to investing in social enterprises? An investigation into the attitudes and experiences of social entrepreneurs in the United Kingdom

The ongoing global economic crisis and the restrictions that this is having on government expenditure has meant that current UK policy is being directed at trying to end the grant dependency that currently exists in the third sector. One of the key focuses of this policy initiative has been to try to increase the third sector’s access to both debt finance from lending institutions and equity finance from venture capital investors. However, this policy intervention presupposes that the lack of private sector investment in the third sector is a ‘supply-side’ problem caused by limited funds. This ignores the structural problems in the social enterprise sector related to governance and a lack of organisational capacity. Indeed, as of 2011 the ethical investment sector in the UK was worth approximately £9 billion and was spread across 90 ethical investment funds responsible to 700,000 investors. Additionally, social investment (i.e. those funds targeted specifically at third sector organisations) was worth £165 million as of 2011. This suggests that the lack of private sector investment in social enterprises in the UK is not a ‘supply’ side problem but is instead related to the ‘investment readiness’ of social enterprise

Teachers as writers: a systematic review

This paper is a critical literature review of empirical work from 1990-2015 on teachers as writers. It interrogates the evidence on teachers’ attitudes to writing, their sense of themselves as writers and the potential impact of teacher writing on pedagogy or student outcomes in writing. The methodology was carried out in four stages. Firstly, educational databases keyword searches located 438 papers. Secondly, initial screening identified 159 for further scrutiny, 43 of which were found to specifically address teachers’ writing identities and practices. Thirdly, these sources were screened further using inclusion/exclusion criteria. Fourthly, the 22 papers judged to satisfy the criteria were subject to in-depth analysis and synthesis. The findings reveal that the evidence base in relation to teachers as writers is not strong, particularly with regard to the impact of teachers’ writing on student outcomes. The review indicates that teachers have narrow conceptions of what counts as writing and being a writer and that multiple tensions exist, relating to low self-confidence, negative writing histories, and the challenge of composing and enacting teacher and writer positions in school. However, initial training and professional development programmes do appear to afford opportunities for reformulation of attitudes and sense of self as writer