TY - JOUR
T1 - Two sides of the same coin: Monetary incentives concurrently improve and bias confidence judgments
AU - Lebreton, Maël
AU - Langdon, Shari
AU - Slieker, Matthijs J.
AU - Nooitgedacht, Jip S.
AU - Goudriaan, Anna E.
AU - Denys, Damiaan
AU - van Holst, Ruth J.
AU - Luigjes, Judy
PY - 2018
Y1 - 2018
N2 - Decisions are accompanied by a feeling of confidence, that is, a belief about the decision being correct. Confidence accuracy is critical, notably in high-stakes situations such as medical or financial decision-making. We investigated how incentive motivation influences confidence accuracy by combining a perceptual task with a confidence incentivization mechanism. By varying the magnitude and valence (gains or losses) of monetary incentives, we orthogonalized their motivational and affective components. Corroborating theories of rational decision-making and motivation, our results first reveal that the motivational value of incentives improves aspects of confidence accuracy. However, in line with a value-confidence interaction hypothesis, we further show that the affective value of incentives concurrently biases confidence reports, thus degrading confidence accuracy. Finally, we demonstrate that the motivational and affective effects of incentives differentially affect how confidence builds on perceptual evidence. Together, these findings may provide new hints about confidence miscalibration in healthy or pathological contexts.
AB - Decisions are accompanied by a feeling of confidence, that is, a belief about the decision being correct. Confidence accuracy is critical, notably in high-stakes situations such as medical or financial decision-making. We investigated how incentive motivation influences confidence accuracy by combining a perceptual task with a confidence incentivization mechanism. By varying the magnitude and valence (gains or losses) of monetary incentives, we orthogonalized their motivational and affective components. Corroborating theories of rational decision-making and motivation, our results first reveal that the motivational value of incentives improves aspects of confidence accuracy. However, in line with a value-confidence interaction hypothesis, we further show that the affective value of incentives concurrently biases confidence reports, thus degrading confidence accuracy. Finally, we demonstrate that the motivational and affective effects of incentives differentially affect how confidence builds on perceptual evidence. Together, these findings may provide new hints about confidence miscalibration in healthy or pathological contexts.
UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85048020597&origin=inward
UR - https://www.ncbi.nlm.nih.gov/pubmed/29854944
U2 - https://doi.org/10.1126/sciadv.aaq0668
DO - https://doi.org/10.1126/sciadv.aaq0668
M3 - Article
C2 - 29854944
SN - 2375-2548
VL - 4
JO - Science advances
JF - Science advances
IS - 5
M1 - eaaq066
ER -