On-line confidence monitoring during decision making

被引:49
作者
Dotan, Dror [1 ,2 ,3 ]
Meyniel, Florent [1 ]
Dehaene, Stanislas [1 ,4 ]
机构
[1] Univ Paris Saclay, INSERM, CEA, Cognit Neuroimaging Unit,DRF,I2BM,Univ Paris Sud, F-91191 Gif Sur Yvette, France
[2] Tel Aviv Univ, Language & Brain Lab, Sch Educ, IL-69978 Tel Aviv, Israel
[3] Tel Aviv Univ, Sagol Sch Neurosci, IL-69978 Tel Aviv, Israel
[4] Coll France, 11 Pl Marcelin Berthelot, F-75005 Paris, France
关键词
Decision making; Confidence; Accumulation of evidence; Trajectory tracking; Speed-accuracy trade-off; CHOICE; INFORMATION; CERTAINTY; MOVEMENT; HUMANS; MODELS; REACH;
D O I
10.1016/j.cognition.2017.11.001
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
Humans can readily assess their degree of confidence in their decisions. Two models of confidence computation have been proposed: post hoc computation using post-decision variables and heuristics, versus online computation using continuous assessment of evidence throughout the decision-making process. Here, we arbitrate between these theories by continuously monitoring finger movements during a manual sequential decision making task. Analysis of finger kinematics indicated that subjects kept separate online records of evidence and confidence: finger deviation continuously reflected the ongoing accumulation of evidence, whereas finger speed continuously reflected the momentary degree of confidence. Furthermore, end-of-trial finger speed predicted the post-decisional subjective confidence rating. These data indicate that confidence is computed on-line, throughout the decision process. Speed-confidence correlations were previously interpreted as a post-decision heuristics, whereby slow decisions decrease subjective confidence, but our results suggest an adaptive mechanism that involves the opposite causality: by slowing down when unconfident, participants gain time to improve their decisions.
引用
收藏
页码:112 / 121
页数:10
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