Taylor Swift does not boost face recognition in reaction time-based Concealed Information Test: investigating...

Area of Science:

• Cognitive Psychology
• Forensic Psychology
• Psychophysiology

Background:

• Eyewitness identification from lineups is frequently inaccurate.
• The reaction-time based Concealed Information Test (RT-CIT) is a potential alternative, assessing facial familiarity through response times.
• Prior research suggested RT-CIT accuracy improves with increased reliance on familiarity-based responses.

Purpose of the Study:

• To investigate whether using familiar target faces enhances the accuracy of the RT-CIT in diagnosing concealed facial recognition.
• To test the hypothesis that increased familiarity with target stimuli augments the validity of the RT-CIT.

Main Methods:

• Two experiments were conducted with 173 participants who witnessed a mock crime.
• Participants underwent an RT-CIT protocol involving probe faces from the crime, irrelevant faces, and target faces (unfamiliar or familiar celebrities).
• Response times were analyzed to detect the CIT effect, comparing conditions with unfamiliar versus familiar targets.

Main Results:

• A CIT effect (longer reaction times to probes than irrelevants) was observed across all conditions, confirming the RT-CIT's general capability.
• Contrary to predictions, the CIT effect was not significantly larger when familiar celebrity faces were used as targets compared to unfamiliar faces.
• This indicates that familiar targets did not improve the RT-CIT's validity in diagnosing concealed face recognition.

Conclusions:

• Familiarity with target stimuli does not appear to enhance the diagnostic accuracy of the RT-CIT for concealed facial recognition.
• The lack of increased accuracy with familiar targets may be due to their insufficient saliency in the experimental context.
• Despite this, the study found medium to large overall effect sizes, supporting the RT-CIT's potential for diagnosing face recognition.