I wonder whether social capital is susceptible to pecuniary estimation.

In other words can we apply the concepts of NPV, IRR, ROI to social capital?

This article may just give some answers.

The Department for International Development (DFID) has this to say in its Social Capital Key Sheets. Click here.

I am just a bit intrigued by the point: "Do not predefine the unit of association (family, clan, village, hamlet etc.)" in the list of lessons learned about development interventions working with social capital in the local associational context. Well I guess that is par for the course when one speaks from an outsider's perspective.