Lecture 12 Earwitness

Lecture 12 Earwitness - LIN 4930 Earwitness Line-ups...

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LIN 4930 Earwitness Line-ups
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Introduction Earwitness Line-up Definition: A target voice is presented among a set of foil voices for auditory-only identification Background to earwitness line-ups Victim/witness is not familiar with perpetrator’s voice Latency between crime and earwitness lineup Victims are untrained in assessing speech and voice characteristics Emotional effects on speech during criminal act Individual differences in recalling voices
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Individual Differences Intelligence Short-term memory capacity Musical aptitude Auditory perception
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Line-up Methods Issue 1: Listener expectations Does the line-up have to include the perpetrator’s voice False alarm bias Issue 2: Sample size, quality Issue 3: Foil selection Issue 4: Test Administration
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Samples All exemplars (foils and suspect) should be equal in length and recording quality Equal or equivalent texts Extemporaneous speech on a neutral topic and read speech on topic
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This note was uploaded on 10/22/2011 for the course LIN 4930 taught by Professor Habib,r during the Spring '08 term at University of Florida.

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Lecture 12 Earwitness - LIN 4930 Earwitness Line-ups...

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