BACKGROUND To improve the scope of the Youth Compendium of Energy Expenditures, a range of everyday activities of varying intensity should be measured. This study measures the energy cost of children undertaking common household chores, rollerblading and riding a foot-propelled scooter. METHODS Participants were 9- to 14-year-old children. A metabolic cart was used to measure oxygen cost (VO2...

This research examined drinking driving (DD) and riding with drunk drivers (RWDD) among college students. Introduction Few efforts have examined the relationship between drinking driving and riding with drunk drivers among college students. Yu and Shacket (1) argued that drinking driving and riding with drunk drivers are two closely related behaviors since a person who would not ride with an im...

We study the formation of cartels within two di¤erent contexts. First, we consider internal-external stability based models which, due to …rms’ free-riding incentives, lead to the inexistence of stable cartels. Second, we introduce the dynamic aspect of coalition formation. That is, when considering a cartel we consider also any cartel that can be reached through a succession of moves. Despite ...

In recent years, NFTs have burst onto the global scene, quickly going from an internet meme to a multi-billion dollar digital industry. These assets everyone talking, but nobody seems know what they are or whether you actually own anything when buy one. This article uses extensive philosophical, legal, copyright, and empirical research explore is being purchased with NFT. With everything morale...

Criticism of contingent valuation (CV) stresses warm glow and free-riding as possible causes for biased willingness to pay figures. We present an empirical framework to study the existence of warm glow and free-riding in hypothetical WTP answers based on a CV survey for the measurement of health-related Red Cross services. Both in conventional double-bounded and spike models we do not find indi...

This paper presents the study design and first experiences of a Pedelec Naturalistic Cycling study. There are 90 participants: 30 bicylists, 50 Pedelec cyclists and 10 E-bike cyclists. The bicycles are equipped with a data acquisition system that records among others speed data and videos on the traffic situation over a period of four weeks. Questionnaires assessing current travel and traffic b...