Probability weighting for losses and for gains among smallholder farmers in Uganda

Probability weighting for losses and for gains among smallholder farmers in Uganda
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乌干达小农损失和收益的概率加权

DOI:
10.1007/s11238-020-09796-8
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发表时间:
2020
影响因子:
0.8
通讯作者:
Verschoor A
Verschoor A
中科院分区:
经济学4区
文献类型:
--
作者:
Verschoor A

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概率加权是风险决策的一个显著特征。对于发展中国家农村地区的穷人来说,如何评估概率,特别是与损失相关的概率,对生计决策至关重要。以往的研究中,在发展中国家的穷人的风险选择很少考虑损失,并没有提供一个精确的跟踪概率加权函数(PWF)。我们调查的概率加权在乌干达的小农,分别为损失和收益,使用一种方法(共同的后果阶梯),可以细化跟踪的PWF人口识字水平低。对于损失,我们发现显著的概率权重接近于零,这与西方实验室发现的证据一致。对于收益,概率权重的缺失是值得注意的,特别是它接近100%的缺失。我们还发现显着的差异,传统的农民,这是在研究领域观察到的生计战略的概率加权。
Probability weighting is a marked feature of decision-making under risk. For poor people in rural areas of developing countries, how probabilities are evaluated matters for livelihoods decisions, especially the probabilities associated with losses. Previous studies of risky choice among poor people in developing countries seldom consider losses and do not offer a refined tracking of the probability-weighting function (PWF). We investigate probability weighting among smallholder farmers in Uganda, separately for losses and for gains, using a method (common consequence ladders) that allows refined tracking of the PWF for a population with low levels of literacy. For losses, we find marked probability weighting near zero, which is in line with evidence found in Western labs. For gains, the absence of probability weighting is remarkable, particularly its absence near 100%. We also find marked differences in probability weighting for traditional farmers which are in line with the observed livelihoods strategies in the study area.
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