Economics
Research insight
January 4, 2021

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.

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8. Decent work and economic growth
Economics
Project
SDG
4
8

Economic 1st respondents

Partnering with Deloitte and DNA Cascais, Economic 1st Respondents targeted the survival of the ecosystem during the pandemic by reflecting on the necessary adjustments to a new environment and the future.

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Economics
Research insight
SDG
5
10
16

Political voice and pro-sociality: evidence from a lab-in-the-field experiment in Uganda

Under the theme of Economic Development in Africa, the NOVAFRICA@Nova SBE seminar series hosts a variety of international speakers. This seminar invited Ana Garcia, Nova SBE.

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Economics
Research insight
SDG
1
10
17

An analysis of inequality and poverty in Portugal

Income inequality in OECD countries has reached its highest values in the past 50 years. Portugal is amongst the most unequal and poorest European countries. Nova Economics Club developed a report on this.

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