Eyewitness testimony (EWT) is a legal term referring to the use of eyewitnesses giving
evidence in court, perhaps identifying a criminal or giving a statement. Despite its
importance in criminal convictions, the reliability of eyewitness testimony is widely debated.
Some psychologists argue that eyewitnesses are incapable of accurately remembering
events due to post-event information, emotional trauma, and children’s suggestibility, making
EWT unreliable and potentially dangerous in criminal convictions. Conversely, evidence
suggests that EWT can be accurate under certain conditions.
Post-event information can significantly distort eyewitness memory, making EWT unreliable.
Loftus and Palmer demonstrated this by showing that subtle changes in wording (e.g.,
“smashed” vs. “hit”) affected participants’ speed estimates in a car accident, highlighting how
misleading questions can alter memory recall. Loftus and Zanni (1975) also found that using
“the” instead of “a” increased false recollections. When asked “did you see a broken
headlight” 7% said yes whereas when asked “did you see the broken headlight” 17% said
yes, showing how post event information can become integrated into the original memory,
leading to inaccuracies. This suggests that EWT is highly susceptible to distortion,
particularly during police questioning or courtroom examinations, directly supporting the
statement that eyewitnesses are incapable of remembering and recalling accurate
information of an event. The social implications are significant, as distorted testimonies can
lead to wrongful convictions, undermining public trust in the justice system. Economically,
this results in costly retrials and compensation for miscarriages of justice. Ethical issues also
arise when innocent individuals face imprisonment due to unreliable EWT. Consequently, the
evidence strongly supports the argument that EWT is often unreliable due to post event
information.
Contrary to this, some research suggests that eyewitnesses can accurately recall events
even when exposed to misleading post event information. Loftus (1979) found that
participants who saw a bright red purse accurately remembered its color, despite later
exposure to contradictory information suggesting it was purple. Notably, 98% correctly
identified the purse’s color, indicating that while peripheral details may be distorted, central,
more vivid details are retained. This challenges the claim that EWT is always unreliable and
suggests that eyewitnesses can resist memory contamination for significant details. This has
practical implications, as recognising the accuracy of central details ensures valuable EWT
is not unjustly dismissed. In the UK, this is reflected in the cautious use of EWT alongside
supporting evidence, demonstrating a balanced approach that values accurate testimony
while minimising wrongful convictions. Therefore, the argument that eyewitnesses are
always unreliable is not entirely accurate, as they can be reliable under certain conditions.
Crimes are often unexpected and traumatic, potentially impairing memory accuracy. Freud
suggested that traumatic experiences are repressed into the unconscious as a defense
mechanism, a concept now referred to as motivated forgetting. This implies that painful
memories may be recalled inaccurately or not at all. Supporting this, research shows that
witnesses to violent crimes often recall fewer details than neutral observers due to emotional
shock impairing memory encoding and retrieval. This challenges the reliability of EWT, as
emotional distress can lead to incomplete or distorted memories. Socially, this raises
concerns about justice and fairness, as wrongful convictions based on unreliable testimony
can lead to community distrust in the legal system. Economically, the cost of appeals and
retrials due to incorrect verdicts places a financial burden on the criminal justice system.
evidence in court, perhaps identifying a criminal or giving a statement. Despite its
importance in criminal convictions, the reliability of eyewitness testimony is widely debated.
Some psychologists argue that eyewitnesses are incapable of accurately remembering
events due to post-event information, emotional trauma, and children’s suggestibility, making
EWT unreliable and potentially dangerous in criminal convictions. Conversely, evidence
suggests that EWT can be accurate under certain conditions.
Post-event information can significantly distort eyewitness memory, making EWT unreliable.
Loftus and Palmer demonstrated this by showing that subtle changes in wording (e.g.,
“smashed” vs. “hit”) affected participants’ speed estimates in a car accident, highlighting how
misleading questions can alter memory recall. Loftus and Zanni (1975) also found that using
“the” instead of “a” increased false recollections. When asked “did you see a broken
headlight” 7% said yes whereas when asked “did you see the broken headlight” 17% said
yes, showing how post event information can become integrated into the original memory,
leading to inaccuracies. This suggests that EWT is highly susceptible to distortion,
particularly during police questioning or courtroom examinations, directly supporting the
statement that eyewitnesses are incapable of remembering and recalling accurate
information of an event. The social implications are significant, as distorted testimonies can
lead to wrongful convictions, undermining public trust in the justice system. Economically,
this results in costly retrials and compensation for miscarriages of justice. Ethical issues also
arise when innocent individuals face imprisonment due to unreliable EWT. Consequently, the
evidence strongly supports the argument that EWT is often unreliable due to post event
information.
Contrary to this, some research suggests that eyewitnesses can accurately recall events
even when exposed to misleading post event information. Loftus (1979) found that
participants who saw a bright red purse accurately remembered its color, despite later
exposure to contradictory information suggesting it was purple. Notably, 98% correctly
identified the purse’s color, indicating that while peripheral details may be distorted, central,
more vivid details are retained. This challenges the claim that EWT is always unreliable and
suggests that eyewitnesses can resist memory contamination for significant details. This has
practical implications, as recognising the accuracy of central details ensures valuable EWT
is not unjustly dismissed. In the UK, this is reflected in the cautious use of EWT alongside
supporting evidence, demonstrating a balanced approach that values accurate testimony
while minimising wrongful convictions. Therefore, the argument that eyewitnesses are
always unreliable is not entirely accurate, as they can be reliable under certain conditions.
Crimes are often unexpected and traumatic, potentially impairing memory accuracy. Freud
suggested that traumatic experiences are repressed into the unconscious as a defense
mechanism, a concept now referred to as motivated forgetting. This implies that painful
memories may be recalled inaccurately or not at all. Supporting this, research shows that
witnesses to violent crimes often recall fewer details than neutral observers due to emotional
shock impairing memory encoding and retrieval. This challenges the reliability of EWT, as
emotional distress can lead to incomplete or distorted memories. Socially, this raises
concerns about justice and fairness, as wrongful convictions based on unreliable testimony
can lead to community distrust in the legal system. Economically, the cost of appeals and
retrials due to incorrect verdicts places a financial burden on the criminal justice system.
