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通过议价实现的价格歧视:零售电力市场的一项实地实验

Price Discrimination by Negotiation: a Field Experiment in Retail Electricity
Quarterly Journal of Economics · 2022 · David Byrne、Leslie Martin、Jia Sheen Nah

中文摘要

我们利用一项实地实验研究在一个同时存在标价与议价的市场中的价格歧视。出于对低收入消费者在私下议价市场中处于不利地位的担忧,我们建立了一个呼叫中心,配备持有议价脚本的工作人员,以揭示议价价格及其决定因素。我们的工作人员在实地实施了不完全信息下的序贯议价博弈。通过对信息披露方式进行实验操纵,我们生成了价格报价序列,从而得以识别议价中基于零售商对消费者搜寻与转换成本感知的价格歧视。我们还记录了进入者与在位者之间价格分布的差异,这反映了各自消费者群体被锁定程度的差异。最后,我们表明,在我们的市场中,低收入补贴接受者支付了更高的价格并非源于歧视性靶向;这可以由消费者搜寻与议价的意愿及能力的变异来解释。

Abstract

Abstract We use a field experiment to study price discrimination in a market with price posting and negotiation. Motivated by concerns that low-income consumers do poorly in markets with privately negotiated prices, we built a call center staffed with actors armed with bargaining scripts to reveal negotiated prices and their determinants. Our actors implement sequential bargaining games under incomplete information in the field. By experimentally manipulating how information is revealed, we generate sequences of price offers that allow us to identify price discrimination in negotiations based on retailer perceptions of consumers’ search and switching costs. We also document differences in price distributions between entrants and incumbents, reflecting differences in captivity of their respective consumer bases. Finally, we show that higher prices paid by lower-income subsidy recipients in our market is not due to discriminatory targeting; they can be explained by variation in consumer willingness and ability to search and bargain.
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