Physical activity is the leading health indicator in Healthy People 2010, a national agenda for reducing the most significant preventable threats to health. The scientific evidence is strong that ...

For decades, the influential “broken windows” theory has linked signs of petty crime to bigger problems in a neighborhood. Largely left out of such discussions, however, is the role simple perceptual ...

In the past four decades the prevailing wisdom about the cause of disability has undergone profound change. Previous models of absolute determinism that viewed pathology and disability interchangeably ...