Studies in the social capital literature have documented two stylised facts: first, a decline in measures of social participation has occurred in many OECD countries. Second, and more recently, the success of social networking sites (SNSs) has resulted in a steep rise in online social...

Social capital is often represented by generalized trust - the degree to which one trusts "most (unknown) people". It is assumed to be enhanced by diverse group interactions. In the social capital literature, it is opposed by particularized trust, which represents our mutual confidence in...