A meta-analysis on study and sample characteristics modulating mock earwitness performance

Area of Science:

• Cognitive Psychology
• Forensic Psychology
• Eyewitness Testimony Research

Background:

• Mock earwitness performance research primarily focuses on cognitive functions related to auditory information processing, such as recall and recognition.
• Previous studies have suggested potential moderator effects on mock earwitness performance, necessitating a comprehensive meta-analytic review.

Purpose of the Study:

• To systematically evaluate experimental moderator effects on mock earwitness performance using meta-analysis.
• To identify factors, such as stimulus type and listener demographics, that significantly influence the accuracy of auditory eyewitness accounts.

Main Methods:

• Conducted a meta-analysis of 46 articles, encompassing 66 experimental studies, employing both bare-bones and random-effects, artefact-corrected models.
• Analyzed a priori hypothesized moderators including stimulus type (bimodal vs. unimodal) and listener gender.
• Investigated post-hoc moderators such as stimulus length and target presence in line-ups.

Main Results:

• Bimodal auditory stimuli significantly enhance mock earwitness performance compared to unimodal stimuli.
• Female mock earwitnesses demonstrate superior performance over male mock earwitnesses.
• Longer stimulus durations and target-present line-ups were associated with improved performance in post-hoc analyses.

Conclusions:

• The findings confirm that stimulus characteristics and listener gender are robust moderators of mock earwitness accuracy.
• Recommendations are made for best practices in legal settings, emphasizing the use of meta-analytically derived, substantial, and robust results.
• Future research should consider larger sample sizes, and earwitness assessments should be distinguished from hearsay evidence.