Zoekresultaten

Event-related desynchronization related to the anticipation of a stimulus providing knowledge of results.

Pre-vacation time: blessing or burden?

Vacationers generally experience higher health and well-being levels than nonvacationers. It is unclear if and how health and well-being levels of vacationers change prior to vacation and what potential determinants are. Our research questions were: (1) How do health and well-being change before vacation? (2) Which factors (i.e., vacation anticipation, pre-vacation workload, and homeload) are associated with health and well-being changes before vacation? (3) Are associations between pre-vacation work- and home-load and health and well-being changes before vacation different for men and women? In a longitudinal study, 96 Dutch workers reported their health and well-being in the two weeks prior to their winter sports vacation. Health and well-being decreased significantly from two weeks to one week prior to vacation. Anticipation did not affect health and well-being, whereas pre-vacation workload lowered health and well-being. Pre-vacation homeload was also associated with a decline in pre-vacation health and well-being but only for women.

Managing social impact in design

We need look no further than the use of email communication, mobile phones and cars to understand that technology has wide-ranging social consequences. What is more, designers are plainly not always aware of the social consequences of technology, despite practicing user-centred design. Email, for instance, was developed as an efficient mode of communication between two actors. As we all know, the introduction of email has fundamentally changed traditional business and office practices. These side effects were not identified until long after email was introduced. During recent years, designers have grown increasingly interested in these social aspects. Modern information technology, in particular, creates extensive possibilities to influence social behaviour. Persuasive technology has been developed to increase, e.g., environmental friendliness. Once a designer aims at defined social changes, the consequences of technology for practices become a responsibility, too. The present research is aimed at providing tools and methods to anticipate social consequences at an earlier stage of the design process. These consequences of technologies in social environments will be called social impacts. In order to be a meaningful concept for designers the characteristics of a particular technology that are responsible for social impacts must be identified. Social consequences of technologies have not been observed very thoroughly from a user-centred design point of view. Therefore, this thesis is aimed, not only at gaining knowledge about social impact, but also translating these insights into workable instruments for designers. This leads to the following research questions:1. What relations can be identified between social impacts and characteristics oftechnologies?2. How can a designer anticipate social impact?3. How can social impact be managed in design environments?

Employable through social media

This longitudinal, quantitative study contributes to the debate on technology-based professional development by examining the extent to which a learning (LinkedIn) intervention in a university setting affects an individual’s social media use for professional development, and the extent to which this relates to self-reported employability. In addition, we investigated how this relationship is moderated by an individual’s motivation to communicate through social media (LinkedIn). Based on social capital theory and the conservation of resources theory, we developed a set of hypotheses that were tested based on longitudinal data collected from university employees (N = 101) in middle- and high-level jobs. First, in line with our expectations, social media use for professional development was significantly higher after the learning intervention than before. Second, partially in line with our expectations, social media use for professional development was positively related with the employability dimension anticipation and optimization. Third, contrary to our expectations, motivation to communicate through social media (LinkedIn) did not have a moderating role in this relationship. We concluded that the learning intervention has the potential to foster social media use for professional development, and in turn, can contribute to individuals’ human capital in terms of their employability. Hence, the intervention that forms the core of this empirical research can be a sustainable and promising human resource management (HRM) practice that fits the human capital agenda.

Effects of reflex-based self-defence training on police performance in simulated high-pressure arrest situations

We investigated the effects of reflex-based self-defence training on police performance in simulated high-pressure arrest situations. Police officers received this training as well as a regular police arrest and self-defence skills training (control training) in a crossover design. Officers' performance was tested on several variables in six reality-based scenarios before and after each training intervention. Results showed improved performance after the reflex-based training, while there was no such effect of the regular police training. Improved performance could be attributed to better communication, situational awareness (scanning area, alertness), assertiveness, resolution, proportionality, control and converting primary responses into tactical movements. As officers trained complete violent situations (and not just physical skills), they learned to use their actions before physical contact for de-escalation but also for anticipation on possible attacks. Furthermore, they learned to respond against attacks with skills based on their primary reflexes. The results of this study seem to suggest that reflex-based self-defence training better prepares officers for performing in high-pressure arrest situations than the current form of police arrest and self-defence skills training. Practitioner Summary: Police officers' performance in high-pressure arrest situations improved after a reflex-based self-defence training, while there was no such effect of a regular police training. As officers learned to anticipate on possible attacks and to respond with skills based on their primary reflexes, they were better able to perform effectively.

Postoperative patients' perspectives on rating pain: A qualitative study

Background: In postoperative pain treatment patients are asked to rate their pain experience on a single uni-dimensional pain scale. Such pain scores are also used as indicator to assess the quality of pain treatment. However, patients may differ in how they interpret the Numeric Rating Scale (NRS) score. Objectives: This study examines how patients assign a number to their currently experienced postoperative pain and which considerations influence this process. Methods: A qualitative approach according to grounded theory was used. Twenty-seven patients were interviewed one day after surgery. Results: Three main themes emerged that influenced the Numeric Rating Scale scores (0–10) that patients actually reported to professionals: score-related factors, intrapersonal factors, and the anticipated consequences of a given pain score. Anticipated consequences were analgesic administration—which could be desired or undesired—and possible judgements by professionals. We also propose a conceptual model for the relationship between factors that influence the pain rating process. Based on patients’ score-related and intrapersonal factors, a preliminary pain score was ‘‘internally’’ set. Before reporting the pain score to the healthcare professional, patients considered the anticipated consequences (i.e., expected judgements by professionals and anticipation of analgesic administration) of current Numeric Rating Scale scores. Conclusions: This study provides insight into the process of how patients translate their current postoperative pain into a numeric rating score. The proposed model may help professionals to understand the factors that influence a given Numeric Rating Scale score and suggest the most appropriate questions for clarification. In this way, patients and professionals may arrive at a shared understanding of the pain score, resulting in a tailored decision regarding the most appropriate treatment of current postoperative pain, particularly the dosing and timing of opioid administration.