Extra effort during memory retrieval may be associated with increases in eyewitness confidence

Area of Science:

• Cognitive Psychology
• Forensic Psychology

Background:

• Eyewitness testimony is crucial in legal proceedings.
• Witnesses are motivated to provide accurate accounts in court.

Purpose of the Study:

• To investigate if increased effort by eyewitnesses during memory tests enhances accuracy.
• To examine the relationship between motivation, effort, accuracy, and confidence in eyewitness accounts.

Main Methods:

• Participants answered multiple-choice questions about a past event.
• A high-motivation group (prizes) and a low-motivation group (no incentives) were compared.
• Self-reported effort levels were recorded.

Main Results:

• Motivation did not significantly alter overall witness confidence.
• The correlation between confidence and accuracy, and effort and accuracy, decreased in the high-motivation group.
• High-effort reporters showed higher confidence than low-effort reporters, irrespective of accuracy.

Conclusions:

• Courtroom pressures to perform may inflate eyewitness confidence without a corresponding increase in accuracy.
• The findings suggest that increased effort can decouple confidence from accuracy in eyewitness memory.
• Understanding these dynamics is vital for evaluating eyewitness testimony in legal contexts.