Summary: LETTERS
Changes of mind in decision-making
Arbora Resulaj1,2
, Roozbeh Kiani3
, Daniel M. Wolpert1
& Michael N. Shadlen3
A decision is a commitment to a proposition or plan of action based
on evidence and the expected costs and benefits associated with the
outcome. Progress in a variety of fields has led to a quantitative
understanding of the mechanisms that evaluate evidence and reach
a decision1­3
. Several formalisms propose that a representation of
noisy evidence is evaluated against a criterion to produce a
decision4­8
.Withoutadditional evidence,however, theseformalisms
fail to explain why a decision-maker would change their mind. Here
we extend a model,developed to account for boththe timing and the
accuracy of the initial decision9
, to explain subsequent changes of
mind. Subjects made decisions about a noisy visual stimulus, which

Source: Andrzejak, Ralph Gregor - Departament de Tecnologia, Universitat Pompeu Fabra

Collections: Computer Technologies and Information Sciences