Document Type

Article

Publication Date

8-26-2021

Abstract

We introduce two sources of uncertainty into credence-goods experiments: 1) diagnostic uncertainty; experts receive a noisy signal of buyer type; 2) service uncertainty; the services do not always work. Both make detection of dishonesty more difficult. In contrast to hypotheses, we find that uncertainty decreases dishonesty and increases trust; additionally, ratings do not improve efficiency of the transactions under uncertainty. Buyers tended to 'shoot the messenger' (give low ratings) when the high-need option does not work due to bad luck, and to give experts the 'benefit of the doubt' (high ratings) when the high-need option may have been intentionally overprovided.

Comments

ESI Working Paper 21-15

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