Evidence for age-related differences in culprit-presence detection and guessing-based selection in lineups

Area of Science:

• Cognitive psychology
• Forensic psychology
• Gerontology

Background:

• Eyewitness identification accuracy is crucial for legal proceedings.
• Age-related cognitive changes may influence eyewitness memory and decision-making.
• Sequential lineups are a common eyewitness identification procedure.

Purpose of the Study:

• To investigate age-related differences in cognitive processes during sequential eyewitness identification.
• To analyze how memory-based detection and guessing vary across adult age groups.
• To assess the implications of these age-related differences for eyewitness testimony validity.

Main Methods:

• Reanalysis of a large dataset examining culprit-presence/absence detection and guessing across age groups (young-middle, young-old, old-old).
• A novel experiment to validate findings from the dataset reanalysis.
• Application of the two-high threshold eyewitness identification model.

Main Results:

• Memory-based culprit-presence detection probability decreases with advancing age.
• Memory-based culprit-absence detection probability shows a slight decrease with age.
• The probability of guessing-based selection significantly increases with age.

Conclusions:

• Aging is associated with a shift from memory-based to guessing-based eyewitness identification.
• These age-related cognitive shifts may compromise the reliability of eyewitness testimony.
• Understanding these age effects is vital for legal system evaluations of eyewitness evidence.