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Eyewitness Memory

Eyewitness Memory

Eyewitness memory refers to the recollection of events by someone who has directly witnessed them, often serving as critical evidence in legal settings. This type of memory is commonly used in criminal cases where a witness describes details like a suspect's appearance, clothing, or behavior during a crime. However, despite its perceived reliability, eyewitness memory is prone to significant errors.
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Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...

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Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...

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Related Experiment Video

Updated: Oct 28, 2025

Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm

Holistic Facial Composite Creation and Subsequent Video Line-up Eyewitness Identification Paradigm

Published on: December 24, 2015

Eyewitness Identification Is a Visual Search Task.

John T Wixted¹, Edward Vul¹, Laura Mickes²

¹Department of Psychology, University of California, San Diego, La Jolla, California 92093, USA;

Annual Review of Vision Science

|July 16, 2021

Summary

This summary is machine-generated.

Eyewitness identification uses simultaneous six-pack photo lineups, which are visual search tasks. Signal detection theory helps understand eyewitness memory and lineup accuracy.

Keywords:

ROC analysis discriminability eyewitness identification photo lineups visual search

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Area of Science:

Cognitive Psychology
Forensic Science
Eyewitness Identification Research

Background:

Simultaneous six-pack photo lineups are standard in eyewitness identification.
These lineups include one police suspect and five fillers.
Lineups are either target-present (suspect is guilty) or target-absent (suspect is innocent).

Purpose of the Study:

To frame eyewitness identification as a detection-plus-localization visual search task.
To explore the application of signal detection concepts to police lineups.
To enhance understanding of eyewitness memory and identification accuracy.

Main Methods:

Describing the eyewitness identification process as a visual search task.
Applying signal detection theory principles to analyze lineup procedures.
Examining the roles of detection and localization in eyewitness memory.

Main Results:

Police lineups function as a complex visual search task.
Signal detection concepts provide a valuable framework for analyzing lineup performance.
Understanding detection and localization is crucial for accurate eyewitness identification.

Conclusions:

Eyewitness identification procedures can be effectively analyzed using signal detection theory.
This approach offers insights into the cognitive processes underlying eyewitness memory.
Further research applying these concepts can improve the reliability of eyewitness evidence.