A study [PDF] from Sheffield University looks at the strength of physical communities in the UK. Using a formula that is
based on the proportion of people in an area who are single, those who live alone, the numbers in private rented accommodation and those who have lived there for less than a year.
The higher the proportion of people in those categories, the less rooted the community, according to social scientists. They refer to it as the level of "anomie" or the "feeling of not belonging".
From the BBC.
The researchers conclude that the increase in anomie weakens the "social glue" of communities. The result, they suggest, is that neighbourhoods are likely to be less trusting and more fearful.