I can't recall immediately the kinds of studies, basically, but it's more likely to be in areas of high deprivation, areas where the housing is the poor, the environmental facilities are poor, there is not very good transport, and there are public health issues such as high levels of infant mortality or other kinds of issues. There may be a large number of young teenage mothers. It may be areas where there is a lot of public housing that is turning over very quickly, so there is a lack of any sense of its being a community and of the capital within the community to go and talk to someone about problems. There may be a high number of young people in some areas.
In Britain there is an organization, a government department called the neighbourhood renewal unit, that identified the 88 high-need areas across the country. They put in services and they work to join services up in those 88 communities, quite successfully targeting the reduction of poverty, the increase in employment, improvement in health, reduction of crime, improvement in community safety, and some other indices with a series of approaches.
Yesterday I heard about a similar approach in Sydney, Australia, that targets the worst areas. There are quite a lot of indications of the kinds of areas we are looking at. They will be much worse in some areas and in formal settlements in developing countries, but the kinds of issues will be similar in European and North American cities.