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Social Interactions in Growing Bananas: Evidence from a Tanzanian Village
Katleen
Van den Broeck,
University of Copenhagen
Stefan
Dercon,
CSAE, University of Oxford
WPS/2007-05
ABSTRACT: This paper analyses whether agricultural information flows give rise to social learning
effects in banana cultivation in Nyakatoke, a small Tanzanian village. Based on a
village census, full information is available on socio-economic characteristics and
banana production of farmer kinship members, neighbours and informal insurance
group members. This allows a test for social learning within these groups and the
identification of different types of social effects. Controlling for exogenous group
characteristics, the effect of group behaviour on individual farmer output is studied.
The results show that social effects are strongly dependent on the definition of the
reference group. It emerges that no social effects are found in distance based groups,
exogenous social effects linked to group education exist in informal insurance groups,
and only kinship related groups generate the endogenous social effects that produce
positive externalities in banana output.
SUGGESTED CITATION: Katleen Van den Broeck and Stefan Dercon,
" Social Interactions in Growing Bananas: Evidence from a Tanzanian Village "
(April 1, 2007).
The Centre for the Study of African Economies Working Paper Series.
Working Paper 264.
http://www.bepress.com/csae/paper264
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