Eyewitness memory


Eyewitness memory

Eyewitness memory refers to the episodic memory of specific event, often a crime. Eyewitness memory, which is relied upon in the process of eyewitness identification, is thought to be fragile and easily distorted by information obtained post-event. [Principles of Cog. Psychology, Eyesenck, M.W. 2nd ed (2003), pp229]

Fragility of eyewitness memory

Vulnerability to post-event distortion

As with all memories, eyewitness memories can be distorted by what we previously knew (proactive interference) or what we learn in the future (retroactive interference). The distortion of memories by these means has been widely studied in relation to interference theory.

In the case of eyewitness memory, retroactive interference perhaps as a result of police questioning, can lead to difficulty in accurate recall.

A 1974 study by Loftus and Palmer suggests that eyewitness memory is highly vulnerable to post-event distortion. Participants were presented with photographic slides of a multiple-vehicular accident. Experimental group participants were then asked either "About how fast were the cars going when they smashed into each other?" or "About how fast were the cars going when they hit each other?". Participants were questioned a week later as to whether they had seen broken glass in the photographic slides. Although no broken glass was in actuality present in the slides, 32% of participants originally asked if the cars had "smashed into each other" reported they had. This was in comparison to only 14% of those asked if the cars "had hit each other," the conclusion being that the information in the question affected recall of the event. [Principles of Cog. Psychology, Eyesenck, M.W. 2nd ed (2003), pp221] [ [http://www.psychexchange.co.uk/file17.html PsychExchange.co.uk ] ]

Verbal overshadowing of visual recall

It has been suggested that verbal reports may interfere with visual recall of an event. This was concluded by Schooler and Engstler-Schooler following their study in 1990. Participants in this study initially viewed a video recording of a crime. Subsequently one group of participants made a detailed verbal report of the physical appearance of the criminal whilst the other group performed an unrelated task. All participants then were asked to visually identify the criminal. The group which made the verbal report performed significantly worse in this final visual identification task. [Principles of Cog. Psychology, Eyesenck, M.W. 2nd ed (2003),p222] Subsequent research has largely replicated these findings by Schooler et al. although alternative conclusions have been made. [http://digitalcommons.utep.edu/cgi/viewcontent.cgi?article=1007&context=christian_meissner]

ee also

*Eyewitness identification
*Face perception
*Weapon focus

References


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Eyewitness identification — evidence is the leading cause of wrongful conviction in the United States. Of the more than 200 people exonerated by way of DNA evidence in the US, over 75% were wrongfully convicted on the basis of erroneous eyewitness identification evidence. [ …   Wikipedia

  • memory — /mem euh ree/, n., pl. memories. 1. the mental capacity or faculty of retaining and reviving facts, events, impressions, etc., or of recalling or recognizing previous experiences. 2. this faculty as possessed by a particular individual: to have a …   Universalium

  • Eyewitness testimony — Research in eyewitness testimony is mostly considered a subfield within legal psychology, it is however a field with very broad implications. Normally are human reports based on visual perception believed to be very reliable (if not irrefutable) …   Wikipedia

  • Memory errors — Memory gaps and errors refer to the incorrect recall, or complete loss, of information in the memory system for a specific detail and/or event. Memory errors may include remembering events that never occurred, or remembering them differently from …   Wikipedia

  • MEMORY — holocaust literature in european languages historiography of the holocaust holocaust studies Documentation, Education, and Resource Centers memorials and monuments museums film survivor testimonies Holocaust Literature in European Languages The… …   Encyclopedia of Judaism

  • eyewitness identification — Type of evidence by which one who has seen the event testifies as to the person or persons involved from his own memory of the event. See also lineup …   Black's law dictionary

  • eyewitness identification — Type of evidence by which one who has seen the event testifies as to the person or persons involved from his own memory of the event. See also lineup …   Black's law dictionary

  • Emotion and memory — For emotional memory in Stanislavski s system of acting, see Affective memory. Psychology Cognitive psychology …   Wikipedia

  • Misattribution of memory — Memory plays an important role in a number of aspects of our everyday lives and allows us to recall past experiences, navigate our environments, and learn new tasks [1]. From this view, information about a source of memory is assumed to contain… …   Wikipedia

  • Recall (memory) — Recollection redirects here. For other uses, see Recollection (disambiguation). Recall in memory refers to the retrieval of events or information from the past. Along with encoding and storage, it is one of the three core processes of memory.… …   Wikipedia