An Empirical Study Comparing Unobtrusive Physiological Sensors for Stress Detection in Computer Work.

Several unobtrusive sensors have been tested in studies to capture physiological reactions to stress in workplace settings. Lab studies tend to focus on assessing sensors during a specific computer task, while in situ studies tend to offer a generalized view of sensors' efficacy for workplace stress monitoring, without discriminating different tasks. Given the variation in workplace computer activities, this study investigates the efficacy of unobtrusive sensors for stress measurement across a variety of tasks. We present a comparison of five physiological measurements obtained in a lab experiment, where participants completed six different computer tasks, while we measured their stress levels using a chest-band (ECG, respiration), a wristband (PPG and EDA), and an emerging thermal imaging method (perinasal perspiration). We found that thermal imaging can detect increased stress for most participants across all tasks, while wrist and chest sensors were less generalizable across tasks and participants. We summarize the costs and benefits of each sensor stream, and show how some computer use scenarios present usability and reliability challenges for stress monitoring with certain physiological sensors. We provide recommendations for researchers and system builders for measuring stress with physiological sensors during workplace computer use

Media Multitasking Among American Youth: Prevalence, Predictors and Pairings

In recent years, the issue of media multitasking has sparked a broad discussion about the potential impact on children and youth and has raised concerns among non-profits about how best to engage young people with social marketing campaigns.To help advance understanding about the issues that surround media multitasking, the Kaiser Family Foundation hosted a forum, The Teen Media Juggling Act: The Implications of Media Multitasking Among American Youth.Forum participants included executives from MTV and eMarketer, a leading market research firm, along with one of the nation's top cognitive neuroscientists, and experts on media use among young people

The role of working memory, self-regulation, and mindfulness in multitasking performance

This report lays out the ways in which multitasking has been defined and the component pieces of the process that can be improved. Changes to self-regulation, working memory, and heuristic thinking may lead to increased multitasking performance. Although working memory training has been varied in its results, the centrality of working memory capacity to task switching remains clear. Goal setting and goal monitoring might function to lower the cognitive load required for performing multiple interleaved tasks by helping to maintain conscious focus on the desired outcome. Additionally, mindfulness training has been shown to improve many of the cognitive functions involved in multitasking, and therefore it remains an area ripe for future research.Educational Psycholog

CRAY mini manual. Revision D

This document briefly describes the use of the CRAY supercomputers that are an integral part of the Supercomputing Network Subsystem of the Central Scientific Computing Complex at LaRC. Features of the CRAY supercomputers are covered, including: FORTRAN, C, PASCAL, architectures of the CRAY-2 and CRAY Y-MP, the CRAY UNICOS environment, batch job submittal, debugging, performance analysis, parallel processing, utilities unique to CRAY, and documentation. The document is intended for all CRAY users as a ready reference to frequently asked questions and to more detailed information contained in the vendor manuals. It is appropriate for both the novice and the experienced user

Exploring the variability of media multitasking choice behaviour using a network approach

Many researchers have used the Media Multitasking Index (MMI) for investigating media multitasking behaviour. While useful as a means to compare inter-individual multitasking levels, the MMI disregards the variability in media multitasking choice behaviour: certain media combinations are more likely to be selected than others, and these patterns might differ from one population to another. The aim of the present study was to examine media multitasking choices in different populations. For this means, we employed a social network approach to render MMI responses collected in eight different populations into networks. The networks showed that the level of media multitasking as measured by the network densities differed across populations, yet, the pattern of media multitasking behaviour was similar. Specifically, media combinations which involved texting/IMing, listening to music, browsing, and social media were prominent in most datasets. Overall the findings indicate that media multitasking behaviours might be confined within a smaller set of media activities. Accordingly, instead of assessing a large number of media combinations, future studies might consider focusing on a more limited set of media types

Employees\u27 cognitive load and performance during multitasking use of Information Technology

Multitasking-based use of Information Technology, a term that we label MUIT, to accomplish work-related tasks has become a common behavior for employees in organizations. Despite this reality, most research to date has focused on studying either the use of one IT at a time or multi-tasking behaviors in experimental laboratory settings. As a result, this study aims to fill these gaps. Building upon cognitive load theory and multiple resource theory, this paper theorizes that MUIT positively influences cognitive load, which in turn, has a curvilinear (concave, in-verted U) relation with performance. In order to test our hypotheses, we employed the Experi-ence Sampling Method (ESM), a special form of diary study, to gather data on employees at multiple occasions for two weeks. The collected data are hierarchical (multiple observations within individuals), and thus, we employed multi-level regression to test the hypotheses. Results show, as hypothesized, a positive relation between MUIT and cognitive load, and an inverted U relation between cognitive load and performance. Therefore, this study demonstrates that in work settings although MUIT increases cognitive load, cognitive load is not always detrimental: some cognitive load has positive effects on performance until it reaches a tipping point where performance starts to suffer

The interplay between organizational polychronicity, multitasking behaviors and organizational identification: A mixed-methods study in knowledge intensive organizations

This paper investigates how individual perceptions and attitudes about an organization influence multitasking behaviors in the workplace. While we know that individuals are significantly influenced in their behaviors by the characteristics of their organizations (e.g. ICTs, organizational structure, physical layout), we still do not know much about how the way individuals interpret their organization influences their multitasking behaviors. Thus, we specifically hypothesize that the individual perception of the organizational preferences for multitasking (i.e. organizational polychronicity) engenders the actual multitasking behaviors that an individual enacts in the workplace. We also hypothesize that the attachment to the organization (i.e. organizational identification) moderates the above relationship. We conducted a mixed method study in two knowledge intensive organizations (an R&D unit and a university department) and collected data through a survey, diaries, and semi-structured interviews. Our findings support the first hypothesis but not the moderating role of organizational identification. However, this latter is directly related to how much a person is willing to work on multiple activities on a single day. Further, our study suggests that not only the organizational context should be investigated in the study of multitasking behaviors, but also the larger work context, including the individuals’ professional communities. We conclude with a discussion of theoretical and practical implications as well as methodological reflections on mixing methods in the study of multitasking in organizations