How much control is enough? Optimizing fun with unreliable input

Brain-computer interfaces (BCI) provide a valuable new input modality within human- computer interaction systems, but like other body-based inputs, the system recognition of input commands is far from perfect. This raises important questions, such as: What level of control should such an interface be able to provide? What is the relationship between actual and perceived control? And in the case of applications for entertainment in which fun is an important part of user experience, should we even aim for perfect control, or is the optimum elsewhere? In this experiment the user plays a simple game in which a hamster has to be guided to the exit of a maze, in which the amount of control the user has over the hamster is varied. The variation of control through confusion matrices makes it possible to simulate the experience of using a BCI, while using the traditional keyboard for input. After each session the user �lled out a short questionnaire on fun and perceived control. Analysis of the data showed that the perceived control of the user could largely be explained by the amount of control in the respective session. As expected, user frustration decreases with increasing control. Moreover, the results indicate that the relation between fun and control is not linear. Although in the beginning fun does increase with improved control, the level of fun drops again just before perfect control is reached. This poses new insights for developers of games wanting to incorporate some form of BCI in their game: for creating a fun game, unreliable input can be used to create a challenge for the user

Human-Computer Interaction for BCI Games: Usability and User Experience

Brain-computer interfaces (BCI) come with a lot of issues, such as delays, bad recognition, long training times, and cumbersome hardware. Gamers are a large potential target group for this new interaction modality, but why would healthy subjects want to use it? BCI provides a combination of information and features that no other input modality can offer. But for general acceptance of this technology, usability and user experience will need to be taken into account when designing such systems. This paper discusses the consequences of applying knowledge from Human-Computer Interaction (HCI) to the design of BCI for games. The integration of HCI with BCI is illustrated by research examples and showcases, intended to take this promising technology out of the lab. Future research needs to move beyond feasibility tests, to prove that BCI is also applicable in realistic, real-world settings

Effects of NCMS Coverage on Access to Care and Financial Protection in China

The introduction of the New Cooperative Medical Scheme in rural China is one of the largest health care reforms in the developing world since the millennium. The literature to date has mainly used the uneven rollout of NCMS across counties as a way of identifying its effects on access to care and financial protection. This study exploits the cross-county variation in NCMS generosity in 2006 and 2008 in Ningxia and Shandong province and adopts an instrumenting approach to estimate the effect of a continuous measure of coverage level. Our results confirm earlier findings of NCMS being effective in increasing access to care, but not increasing financial protection. In addition, we find that NCMS enrollees are sensitive to the incentives set in the NCMS design when choosing their provider, but also that providers seem to respond by increasing prices and/or providing more expensive care

Quantifying the Impoverishing Effects of Purchasing Medicines: A Cross-Country Comparison of the Affordability of Medicines in the Developing World

Laurens Niëns and colleagues estimate the impoverishing effects of four medicines in 16 low- and middle-income countries using the impoverishment method as a metric of affordability and show that medicine purchases could impoverish large numbers of people

Groene Hart met landbouw naar een hoger peil? Over de vraag of verhoging van waterpeil kan samengaan met verhoging van ruimtelijke kwaliteit

Kan verhoging van het waterpeil in de veenweidegebieden bij de Randstad samengaan met een integrale verhoging van ruimtelijke kwaliteit? In dit rapport worden eerst de resultaten weergegeven van een kwantitatief onderzoek naar de invloed van hogere waterpeilen op landbouwinkomens en op het geheel van ruimtelijke kwaliteiten (economisch, ecologisch en sociaal). Vervolgens biedt het rapport een kwalitatieve verkenning van mogelijkheden tot systeeminnovatie waardoor (verbrede) melkveebedrijven de dragers van het Groene Hart kunnen blijven. Dit kwalitatieve deel wordt ter illustratie uitgewerkt voor het centrale deel van het veenweidegebied (Meije-Zegveld)

Koeien en koersen; ruimtelijke kwaliteit van melkveehouderijsystemen in 2025; uitgebreide versie

De ontwikkeling van de melkveehouderij bepaalt mede de ruimtelijke kwaliteit van het landelijk gebied. Er zijn drie melkveehouderijsystemen voor 2025 geschetst met uiteenlopende ruimtelijke effecten: industriële melkveehouderij, natuurgerichte melkveehouderij en deeltijdmelkveehouderij. Het industriële systeem biedt de beste mogelijkheden voor een concurrerende melkveehouderij, maar vormt een grote bedreiging voor natuur- en landschapswaarden. Het natuurgerichte systeem is juist gericht op behoud vandeze waarden, maar is bedrijfseconomisch zeer kwetsbaar. Het deeltijdsysteem verbreedt het economisch draagvlak van het landelijk gebied. Nadelen van dit systeem zitten in de oncontroleerbaarheid van de ontwikkelingen

What happens in the Lab: Applying Midstream Modulation to Enhance Critical Reflection in the Laboratory

In response to widespread policy prescriptions for responsible innovation, social scientists and engineering ethicists, among others, have sought to engage natural scientists and engineers at the ‘midstream’: building interdisciplinary collaborations to integrate social and ethical considerations with research and development processes. Two ‘laboratory engagement studies’ have explored how applying the framework of midstream modulation could enhance the reflections of natural scientists on the socio-ethical context of their work. The results of these interdisciplinary collaborations confirm the utility of midstream modulation in encouraging both first- and second-order reflective learning. The potential for second-order reflective learning, in which underlying value systems become the object of reflection, is particularly significant with respect to addressing social responsibility in research practices. Midstream modulation served to render the socio-ethical context of research visible in the laboratory and helped enable research participants to more critically reflect on this broader context. While lab-based collaborations would benefit from being carried out in concert with activities at institutional and policy levels, midstream modulation could prove a valuable asset in the toolbox of interdisciplinary methods aimed at responsible innovation

Nudges and other moral technologies in the context of power: Assigning and accepting responsibility

Strawson argues that we should understand moral responsibility in terms of our practices of holding responsible and taking responsibility. The former covers what is commonly referred to as backward-looking responsibility , while the latter covers what is commonly referred to as forward-looking responsibility . We consider new technologies and interventions that facilitate assignment of responsibility. Assigning responsibility is best understood as the second- or third-personal analogue of taking responsibility. It establishes forward-looking responsibility. But unlike taking responsibility, it establishes forward-looking responsibility in someone else. When such assignments are accepted, they function in such a way that those to whom responsibility has been assigned face the same obligations and are susceptible to the same reactive attitudes as someone who takes responsibility. One family of interventions interests us in particular: nudges. We contend that many instances of nudging tacitly assign responsibility to nudgees for actions, values, and relationships that they might not otherwise have taken responsibility for. To the extent that nudgees tacitly accept such assignments, they become responsible for upholding norms that would otherwise have fallen under the purview of other actors. While this may be empowering in some cases, it can also function in such a way that it burdens people with more responsibility that they can (reasonably be expected to) manage