- Title
- The effects of non-diagnostic information on confidence and decision making
- Creator
- Kohl, Amelia T.; Sauer, James D.; Palmer, Matthew A.; Brooks, Jasmin; Heathcote, Andrew
- Relation
- Memory & Cognition Vol. 52, p. 1182-1194
- Publisher Link
- http://dx.doi.org/10.3758/s13421-024-01535-6
- Publisher
- Springer
- Resource Type
- journal article
- Date
- 2024
- Description
- Many decision-making tasks are characterized by a combination of diagnostic and non-diagnostic information, yet models of responding and confidence almost exclusively focus on the contribution of diagnostic information (e.g., evidence associated with stimulus discriminability), largely ignoring the contribution of non-diagnostic information. An exception is Baranski and Petrusic’s Journal of Experimental Psychology: Human Perception and Performance, 24(3), 929-945, (1998) doubt-scaling model, which predicts a negative relationship between non-diagnostic information and confidence, and between non-diagnostic information and accuracy. In two perceptual-choice tasks, we tested the effects of manipulating non-diagnostic information on confidence, accuracy and response time (RT). In Experiment 1, participants viewed a dynamic grid consisting of flashing blue, orange and white pixels and indicated whether the stimulus was predominantly blue or orange (using a response scale ranging from low-confidence blue to high-confidence orange), with the white pixels constituting non-diagnostic information. Increasing non-diagnostic information reduced both confidence and accuracy, generally slowed RTs, and led to an increase in the speed of errors. Experiment 2 replicated these results for a decision-only task, providing further support for the doubt-scaling model of confidence.
- Subject
- confidence; decision making; doubt scaling; evidence accumulation
- Identifier
- http://hdl.handle.net/1959.13/1510309
- Identifier
- uon:56374
- Identifier
- ISSN:0090-502X
- Rights
- x
- Language
- eng
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