Does trade liberalization harm the environment? A new test

Some believe that relatively lenient environmental standards give developing countries a comparative advantage in pollution–intensive goods. Thus, freer trade will harm their environment. This paper brings together the literature on openness and growth, and on the environmental Kuznet’s curve, to demonstrate that the opposite may be true. A simultaneous–equations system is derived which incorporates multiple effects of trade liberalization on the environment. Estimation using pooled provincial data on Chinese water pollution, suggests that freer trade aggravates environmental damage via the terms of trade, but mitigates it via income growth. Simulations suggest that the net effect in China was beneficial. JEL Classification: Fl3, Q28, 0l9 Est–ce que la libéralisation du commerce est nuisible pour l’environnement? Un nouveau test. Certains croient que des normes environnementales relativement peu contraignantes donnent un avantage comparatif aux pays en voie de développement dans la production de biens qui polluent intensivement. Donc, un commerce plus libre contribuera à nuire à l’environnement. Ce mémoire synthétise la littérature spécialisée sur l’ouverture des marchés et la croissance, ainsi que sur la courbe de Kuznets, pour montrer que l’inverse est vrai. On dérive un système d’équations simultanées qui incorpore les multiples effets de la libéralisation du commerce sur l’environnement. La calibration de ce système, en utilisant de manière intégrée les données provinciales de pollution de l’eau en Chine, suggère qu’un commerce plus libre aggrave l’état de l’environnement par le truchement du jeu des termes d’échange, mais que cet effet est mitigé par l’effet de croissance des revenus. Des simulations suggèrent que l’effet net en Chine est positif.     

On the Incentive Effects of Sample Size in Monitoring Agents – A Theoretical and Experimental Analysis

When agents compete for a bonus and their productivity in each of several possible occasions depends stochastically on (constant) effort, the number of times this is checked to assign the bonus affects the level of uncertainty in the selection process. Uncertainty, in turn, is expected to increase the effort made by competing agents (Cowen and Glazer, 1996; Dubey and Haimanko, 2003; Dubey and Wu, 2001). Theoretical predictions are derived and experimental evidence is collected for two competing agents, with the bonus awarded to that agent who outperforms the other. Sampling occasions (1 or 3), cost of production (high or low), cost symmetry (asymmetric or symmetric), and piece‐rate reward are manipulated factorially to test the robustness of the effects of uncertainty. For control, a single‐agent case is included. Results indicate that, for tournaments, greater uncertainty does indeed lead to greater than expected effort and lower average variable costs.     

Rivaroxaban for non-valvular atrial fibrillation and venous thromboembolism in the Netherlands: a real-world data based cost-effectiveness analysis

Background: Non-vitamin K antagonist oral anticoagulants (NOACs) have been included in international guidelines as important alternatives to vitamin K antagonists (VKAs) for the treatment of venous thromboembolism (VTE) and stroke prevention in non-valvular atrial fibrillation (NVAF). Meanwhile, in the Netherlands, NOACs are widely used next to VKAs. The objective of this study is to estimate the cost-effectiveness of treatment with rivaroxaban compared to VKAs in NVAF and VTE patients in the Netherlands, using data from international prospective observational phase IV studies.

Methods: Two models were developed to represent NVAF and VTE patients, populated with patients from the XANTUS (NCT01606995) and XALIA (NCT01619007) international prospective observational studies. The 1-year cost-effectiveness of rivaroxaban use, compared to VKAs, was explored in a population consisting of NVAF and VTE patients (base case) as well as for four scenarios with sub-populations: NVAF patients only, VTE patients only, NVAF patients with unstable international normalized ratio (INR), and NVAF patients using an INR self-measuring device.

Results: In the base case, rivaroxaban saved €72,350 and gained 21 quality-adjusted life-years (QALYs) in a simulation of 2,000 patients over the use of VKAs. Ergo, rivaroxaban was dominant over VKAs. The probabilistic sensitivity analysis showed a probability of 85% for rivaroxaban being dominant and 100% at a willingness-to-pay threshold of €20,000/QALY. Rivaroxaban appeared to be dominant in all scenarios as well, except for the NVAF-patients-only scenario where the incremental cost-effectiveness ratio (ICER) was €157/QALY.

Conclusions: In patients with NVAF or VTE, rivaroxaban treatment is likely to be cost-effective and a potentially cost-saving alternative to VKA in the Netherlands.     

Wenn der Bauch über den Kopf entscheidet

So schwer ist Therapietreue — Menschen, bei denen eine der typischen Volkskrankheiten diagnostiziert wurde, tun sich schwer, Verhaltensweisen zu entwickeln, zu denen ihr Arzt (und auch ihre Vernunft) ihnen r?t. Ern?hrungsregeln, wie sie beispielsweise Diabetikern empfohlen werden, werden entweder nur in Ausnahmef?llen eingehalten oder in stark abgeschw?chter Form. Aber warum ist das so?     

Children aged 9-14 living in disadvantaged areas in England: Opportunities and barriers for cycling

The aim of this paper is to take a holistic perspective to explore levels of cycling and opportunities and barriers to increase children’s safer cycling in disadvantaged areas in England. The study was one part of a larger study which explored the factors underlying the high level of road traffic casualties especially among children in the most disadvantaged areas of England and to explore how this impacts on mobility and quality of life. The methods involved a cross sectional survey comprising school based questionnaire surveys with children aged 9-14 and focus groups with parents who had children within this age range. The surveys were conducted in 2007 and the focus groups during 2008. 4286 children completed the survey and eight focus groups were held. Bike ownership (77%) was high, use in previous week moderate (39%) but only 2% cycled to school. Ownership was significantly lower in minority ethnic groups. Despite young children’s strong preference to travel by cycle (30%) than walk or go by car, most parents felt it was too hazardous. It is unlikely that these findings would be any different from the rest of England, however the combination of environmental and social factors may elevate the risks for young cyclists in these areas. This paper concludes that a number of barriers exist to increasing levels of cycling among children living in disadvantaged areas particularly amongst ethnic groups. These barriers could be addressed by environmental modifications to reduce speeds and by reducing the levels of antisocial driving and riding in residential areas and around destinations where children travel, by providing cycle training to improve children’s skills and parent’s confidence, and by providing secure storage facilities for bikes. Until these barriers are addressed it is unlikely that cycling will increase despite the strong preferences children have to travel by bike. Such preferences to cycle provide an opportunity for local authorities to act on.     

Requests for zoo visitors to undertake pro-wildlife behaviour: How many is too many?

Recognising the potential conservation impact, zoos regularly ask their visitors to undertake pro-wildlife behaviour. This paper presents the results of two studies undertaken to address the question: how often during a visit should visitors be asked? Study 1 sought to a) determine individuals' personal thresholds and b) the point where the number of different behaviours requested began affect visitors' experiences. Study 2 sought the same, but focused on requests for the same behaviour. Results suggest that few respondents' personal thresholds were crossed (2.5% in Study 1 and 9% in Study 2). In neither study did many respondents (2.5% in Study 1 and 2.8% in Study 2) feel that the number of requests negatively affect their overall zoo experience. While there are caveats, we conclude that there appears little cause for concern about asking zoo visitors on multiple occasions to act in support of wildlife. Indeed, such requests may improve experiences.     

Gratitude works: its impact and the mediating role of affective commitment in driving positive outcomes

After studying the effects of Louisiana’s post-hurricane “thank you” campaigns, the researchers find expressions of gratitude significantly improve perceptions of Louisiana in the midst of its recovery. Through a national survey conducted November 2006, they find that those who saw or heard a thank you advertisement have more positive attitudes toward the state and its people, a greater willingness to pay a premium for its products, services and travel to the state, and spread positive word-of-mouth, thus justifying the use of public funds to support the campaign. The authors investigate the role of participation on the effectiveness of expressions of gratitude and identify the mediating role of affective commitment in driving the positive results attributed to expressions of gratitude.     

A buyer's perspective on collaborative versus transactional relationships

This research examines collaborative and transactional relationships in buying firms to determine whether collaborative relationships offer greater benefits than transactional relationships, and to ascertain which relational factors drive satisfaction and performance for both collaborative and transactional relationship types. Factor analysis, t-tests and step-wise regression were used to analyze data from a survey of buying firms. Results show that collaborative relationships offer higher levels of satisfaction and performance than transactional relationships. Satisfaction factored into two separate constructs: satisfaction with the relationship and satisfaction with the results. Of the relational factors examined, trust is the most important predictor of performance and satisfaction with the relationship regardless of the type of relationship examined.