From Learning to Doing: Diffusion of Agricultural Innovations in Guinea-Bissau
This paper analyzes the role of social networks in the diffusion of knowledge and adoption of cultivation techniques, from trainees to the wider community, in the context of an extension project in Guinea-Bissau. In order to test for social learning, we exploit a detailed census of households and social connections across different dimensions. More precisely, we make use of a village photo directory in order to obtain a comprehensive and fully mapped social network dataset. We find evidence that agricultural information spreads across networks from project participants to non-participants, with different networks having different importance. The most relevant connection is found to be between the network of people from which individuals would ‘borrow money’. We are also able to disentangle the relative importance of weak and strong ties: in our context, weak ties are as important in the diffusion of agricultural knowledge as strong ties. Despite positive diffusion effects in knowledge, we found limited evidence of network effects in adoption behavior. Finally, using longitudinal network data, we document improvements in the network position of treated farmers over time.
This content was originally published in Novafrica.org
NOVAFRICA Knowledge Center
NOVAFRICA is a knowledge center created by the Nova School of Business and Economics of the Universidade Nova de Lisboa in 2011. Its mission is to produce expertise with an impact on business and economic development in Africa. A particular focus is on Portuguese-speaking Africa, i.e., Angola, Cape Verde, Guinea-Bissau, Mozambique, and Sao Tome and Principe.Website
Commitment to the future
At the forefront of this movement, Nova SBE embarked on a project to develop a similar model, adapting it to the Portuguese reality. The first steps have been very successful.Learn more
How Do Firms Respond To Demand Shocks?
The study from Nova SBE Finance Knowledge Center examines the response of firms to domestic demand shocks based on the large and unanticipated shock to government spending in European periphery countries during the 2010-2011 sovereign debt crisis.Learn more
Fiscal Benefits Evaluation
Nova SBE Economics for Policy Knowledge Center's project, commissioned by the Portuguese Tax Authority, aims to assess the economic impact of three capital tax benefits.Learn more