In Viet Nam the family is the basic institution and often includes members of the extended family. There is a strong sense of collective responsibility and mutual obligation and family ties remain the principal source of security and support in times of crisis (Figure 1.18). Source: Gallup World Poll 2010. A study on mothers of young children in Viet Nam (Young Lives 2002) found that poor households rely more on informal networks, such as family, friends and neighbours, than on formal networks.