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
Hauptverfasser: Toledo, Roger T, Engler, Alejandra P
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Sprache:eng
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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
ISSN:0718-5820
0718-5839
0718-5839
DOI:10.4067/S0718-58392008000200007