Skogan suggests that social control breaks down when a combination of physical deterioration in local buildings, parks and social disorders in the form of public alcohol and drug use, for example, increase.
This leads to a situation of disorder, which has three consequences:
It undermines the mechanisms of informal social control and leads people to withdraw, thus undermining the bonds between people.
It generates worries about neighbourhood safety, so that people avoid going out at night - thus, making it easier for street crime to be committed.
It causes law-abiding people who can afford it to move out of the area, and leads to a decrease in property values and the growth of housing to let.