"The paper reviews the literature on the characteristics and impact of opinion leaders on the diffusion of new knowledge, concluding that there is no clear evidence on whether opinion leaders are more effective if they are similar in socioeconomic attributes to the other farmers rather than...

"Although there has been considerable recent interest in micro-credit programs, rigorous evidence on the impacts of forming self-help groups to mobilize savings and foster social empowerment at the local level is virtually non-existent, despite a large number of programs following this pattern....

"Despite the popularity and unique nature of women's self-help groups in India, evidence of their economic impacts is scant. Based on two rounds of a 2,400 household panel, the authors use double differences, propensity score matching, and pipeline comparison to assess economic impacts of longer...

"Although early attempts at land titling in Africa were often unsuccessful, the need to secure rights in view of increased demand for land, options for registration of a continuum of individual or communal rights under new laws, and the scope for reducing costs by combining information...