Earwitness testimony - Hodder Education

moancapableAI and Robotics

Nov 17, 2013 (3 years and 11 months ago)

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Earwitness

testimony

Matt Jarvis

Earwitness

testimony

The benefits of earwitness testimony

There has been a lot of research into
the accuracy of eyewitness memory


less so with
earwitness

memory

However, there

are some situations
in which earwitness would be
expected to recall more information

Such as when a criminal is
wearing a mask…

Earwitness

testimony

Difficulties with voice identification

The same voice varies
over time and between
situations

Criminals often
deliberately disguise
their voice

There may be
considerable time
between the event
and the

identification

Both

criminal and
witness will be under
stress during the event

Earwitness

testimony

Laboratory procedures


Procedures are similar to an eyewitness line
-
up


Participants listen to a spoken word or sentence


There is a delay, from minutes to days


Participants attempt to identify the voice from a selection


Earwitness

testimony

Findings

It was expected that voice identification
would have similar accuracy to a visual
line
-
up method (55

60%)


However, it was much lower. Accurate
identification only took place 9

28%,
depending on the number of voices to
choose

from


Earwitness

testimony

Explaining the findings

There may not be enough
context information to access
a remembered voice

Evidence for

Recognition gets better when a
voice is presented with a face at
both learning and recognition


Evidence against

Voice recognition is no better
or worse when a face is
presented just at learning


Earwitness

testimony

Conclusions


Earwitness memory is significantly less accurate than eyewitness memory


We are currently unsure why this is or how to improve its accuracy


Currently earwitness testimony has credibility in the court system


This may result in miscarriages of justice


More research is urgently needed in this area