Risk Preferences Estimation for Small Raspberry Producers in the Bío-Bío Region, Chile
Decisions are strongly influenced by risk and risk preferences of decision makers; however, in Chile there are few studies in the agricultural sector focused on this topic. The present paper analyzes the risk preferences of small producers of raspberries ( Rubus idaeus L.) and the production functio...
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Veröffentlicht in: | Chilean journal of agricultural research 2008-06, Vol.68 (2), p.175-182 |
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Zusammenfassung: | Decisions are strongly influenced by risk and risk preferences of
decision makers; however, in Chile there are few studies in the
agricultural sector focused on this topic. The present paper analyzes
the risk preferences of small producers of raspberries ( Rubus idaeus
L.) and the production function associated with their production system
in the Bío-Bíio Region of Chile. Under a mean-variance
approach, the estimation procedure uses a flexible utility function to
incorporate a variety of risk preference alternatives. Three different
estimation procedures were used: Least Squares Estimation, Seemingly
Unrelated Regression and Full Information Maximum Likelihood, which
revealed the same conclusions. Results showed that small farmers are
risk averse (γ = 0.104) and present increasing relative and
absolute aversion to risk (θ = 0.099 < 1 and θ <
γ, respectively). The hypotheses of risk neutrality (γ = 0)
and constant absolute risk aversion (θ = 1) were rejected with 94%
and 99% confidence, respectively. The chosen function of production is
the Cobb Douglas type, because it presents a better adjustment, and the
relevant factors are fertilizer quantity per hectare, the experience of
the producer and the planted area. This function presents decreasing
returns to scale, then β2 + β3 + β4 is equal to 0.18.
The hypothesis of constant returns to scale is rejected with 99%
confidence.
Las decisiones son fuertemente influenciadas por el riesgo y las
preferencias por riesgo de los agentes que las toman, sin embargo, en
Chile existen pocos estudios en el sector agrícola que se enfoquen
en este tema. El presente estudio analiza las preferencias por riesgo
de pequeños productores de frambuesa ( Rubus idaeus L.), y la
función de producción asociada a este sistema productivo, en
la Región del Bío-Bío, Chile. Utilizando un modelo de
media-varianza, se estima una función de utilidad flexible de
manera de incorporar diferentes alternativas de preferencias por
riesgo. Para la estimación se utilizaron tres procedimientos:
Mínimos Cuadrados Ordinarios, Sistemas de Ecuaciones Aparentemente
no Relacionadas y Máxima Verosimilitud con Información
Completa, arrojando similares resultados. Los resultados revelan que
los productores son aversos al riesgo (γ = 0,104) y tienen
aversión absoluta y relativa creciente (θ = 0,099 < 1 y
θ < γ, respectivamente). Se rechazan las hipótesis de
neutralidad (γ = 0) y aversión absoluta constante al riesgo
(θ = 1), con un 94% y un 99% de confianza, res |
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ISSN: | 0718-5820 0718-5839 0718-5839 |
DOI: | 10.4067/S0718-58392008000200007 |