Overconfidence in an objective anticipatory motor task

Area of Science:

• Cognitive psychology
• Human motor control
• Decision-making science

Background:

• Overconfidence is frequently observed in cognitive tasks where individuals rate their performance.
• This overconfidence often leads to hazardous situations due to inaccurate self-assessment.
• The prevalence of overconfidence in subjective tasks raises questions about its occurrence in objective performance.

Purpose of the Study:

• To investigate whether overconfidence manifests in a natural, objective visuo-motor task.
• To determine if human decision-making biases extend beyond subjective performance ratings.
• To explore the implications of overconfidence in real-world motor actions.

Main Methods:

• Participants performed a visuo-motor task requiring key presses synchronized with predictable visual events.
• Success was rewarded, while being too quick or too slow incurred penalties.
• The study analyzed participants' responses in relation to their motor uncertainty and error costs.

Main Results:

• Participants exhibited overconfidence by underestimating their motor uncertainty.
• They also underestimated the cost associated with timing errors in the visuo-motor task.
• Optimal performance, which would maximize gains, was not achieved due to this overestimation of accuracy.

Conclusions:

• Overconfidence is not limited to subjective cognitive assessments but is also present in objective visuo-motor tasks.
• This suggests overconfidence is a general characteristic of human decision-making processes.
• Understanding this bias is crucial for mitigating risks in various domains involving human performance.