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Underconfidence in sensory discrimination: the interaction between experimental setting and response strategies
Perception & Psychophysics
|April 1, 1996
Summary
Researchers found that overconfidence in sensory discrimination tasks may stem from experimental design flaws. Controlling for these issues revealed a significant underconfidence bias, suggesting caution when comparing sensory and cognitive judgments.
Area of Science:
- Cognitive Psychology
- Psychophysics
- Decision Making
Background:
- Previous research indicated overconfidence in sensory discrimination tasks.
- Baranski and Petrusic (1994) presented empirical data on this phenomenon.
Purpose of the Study:
- To explain the overconfidence bias observed in sensory discrimination.
- To investigate the role of experimental settings and subject assumptions.
Main Methods:
- Proposed an explanation based on an experimental idiosyncrasy involving symmetry assumptions.
- Conducted two experiments to test the hypothesis and explore overconfidence.
- Controlled for the identified experimental setting flaw in Experiment 1.
- Investigated subject-controlled tasks in Experiment 2.
Main Results:
- Controlling for the symmetry assumption led to a significant underconfidence bias.
- Overconfidence was difficult to induce in subject-controlled sensory discrimination tasks.
- Results differed between sensory and cognitive judgment tasks.
Conclusions:
- The overconfidence in sensory discrimination may be an artifact of experimental design.
- Underconfidence is more likely when experimental flaws are addressed.
- Parallels between confidence in sensory and cognitive judgments should be drawn cautiously.