Flirting with Death: Variables Affecting Risk Taking at Intersections1

A series of four field studies were conducted to examine how motorists behaved at intersections. In each study, the proportion of drivers who pulled out in front of oncoming cars at varying temporal distances was recorded. In the first study, it was found that the proportion of turns in front of an approaching car was related to the log of the temporal distance between the subjects and the oncoming cars by a normal ogive. The remaining studies examined the effects that the presence of various types of audiences had on this risk-taking function. It was found that being forced to wait in a line of cars before being allowed to turn substantially increased the risks that drivers took, whereas the presence of other cars behind and/or beside the subject's car had no effect on the risk-taking function. A hypothesis explaining these effects in terms of the frustration of being forced to wait was supported while a social facilitation hypothesis was not. It was also discovered that males take more risks than females, a fact which could explain the higher accident rate for males.     

Empirical investigation of the ethical reasoning of physicians and molecular biologists – the importance of the four principles of biomedical ethics

Background  

This study presents an empirical investigation of the ethical reasoning and ethical issues at stake in the daily work of physicians and molecular biologists in Denmark. The aim of this study was to test empirically whether there is a difference in ethical considerations and principles between Danish physicians and Danish molecular biologists, and whether the bioethical principles of the American bioethicists Tom L. Beauchamp and James F. Childress are applicable to these groups.     

Characteristics,Properties and Ethical Issues of Carbon Nanotubes in Biomedical Applications

The field of nanotechnology and nanoscience is growing rapidly in many areas of research, from electronics to biomedicine to material science. Carbon nanotubes are receiving a lot of attention in the research due to their unique properties and many possible applications. This new material is a good example of how nanotechnology provides us with new opportunities, but at the same time leaves us a lot of unknowns to deal with. In order to deal with the unknowns we need to consider both the science and the ethics of the different applications of this novel material. Nanoethics is the study of the ethical issues in nanotechnology. It is a relatively new field of study and a lot of different methods have been suggested in this area. In this article a method is suggested combining an existing ethical theory with a practical approach in order to do a case study of the ethical considerations of using carbon nanotubes in biomedicine. For the case study to be of practical significance the scientific characteristics and properties of carbon nanotubes are reviewed to give the reader an overview of the research field.