Putnam (2000) classifies social capital into two forms: bonding and bridging. Bonding social capital is generated by close relationships that give emotional support or physical succour. It is found in close relationships, such as those among family. This form of social capital is found among people who have similar objectives (Pretty, 2003). Bonding social capital allows little diversity of members’ backgrounds in the relationships while it has strong solidarity. On the contrary, bridging social capital is based on casual connections referred to as ‘weak-tie’ relationships (Granovetter, 1973), which means loose and not emotionally bonded connections. Bridging social capital occurs within social networks where people who have different backgrounds are tentatively connected (Williams, 2006).