Citation

Hornikx J, Harris AJL, Boekema J. Think. Reason. 2018; 24(1): 117-128.

Copyright

(Copyright © 2018, Informa - Taylor and Francis Group)

DOI

10.1080/13546783.2017.1378721

PMID

unavailable

Abstract

In everyday situations, people regularly receive information from large groups of (lay) people and from single experts. Although lay opinions and expert opinions have been studied extensively in isolation, the present study examined the relationship between the two by asking how many laypeople are needed to counter an expert opinion. A Bayesian formalisation allowed the prescription of this quantity. Participants were subsequently asked to assess how many laypeople are needed in different situations. The results demonstrate that people are sensitive to the relevant factors identified for determining how many lay opinions are required to counteract a single expert opinion. People's assessments were fairly good in line with Bayesian predictions.

Language: en

Keywords

Bayesian argumentation; Expert opinion; popular opinion