The neighborhood is the next group to which children in Japan are introduced beyond the family. Although the loose, informal groups of children who wandered through villages of the past have no counterpart in contemporary heavily trafficked city streets, neighborhood playgrounds and the grounds of local shrines and temples are sites where young children, accompanied by mothers, begin to learn to get along with others. Among neighbors, there is great concern for face. In old urban neighborhoods or rural villages, families may have been neighbors for generations and thus expect relationships of assistance and cooperation to continue into the future. In newer company housing, neighbors represent both competition and stress at the workplace, which cannot be expressed. Extra care is taken to maintain proper relations while maximizing family privacy. Participation in neighborhood activities is not mandatory, but nonparticipants might lose face. If a family plans to stay in an area, people feel strong pressures to participate in public projects such as neighborhood cleanups or seasonal festivals (matsuri). Concern for the family's reputation is real because background checks for marriage and employment might include asking neighbors their opinions about a family. More positively, neighbors become uchi for certain purposes, such as local merchants providing personal services, physicians responding to calls for minor ailments and emergency treatment, and neighbors taking care of children while their mother goes out. People who work in the neighborhood where they live often have a different attitude from those who spend most of their waking hours at distant workplaces, creating differences in character between the central city and the suburbs. Central city areas, dominated by the old middle class of artisans, merchants, and small business owners, generally have more active neighborhood associations and other local groups, such as merchant associations and shrine associations. The neighborhood association's activities include public sanitation and health, volunteer firefighting, disaster preparedness, crime prevention, information exchange, and recreational activities, particularly for children and the elderly. In new urban or suburban developments, local governments might take a more active role in performing these functions. In neighborhoods with mixtures of new and old middle-class residents, it is people with the time and interest, most likely those with businesses in the area, who are active in neighborhood affairs. The activities of women and children, however, might cut across such class distinctions. The emphasis on good relations with neighbors helps counteract the potential depersonalization of urban living.