Pretend you are a police officer. You will be shown a lineup that an eyewitness saw earlier. Because the lineup may or may not have included a previously witnessed suspect, this eyewitness may have either chosen to identify a face from the lineup or responded "Not Present," with their decision highlighted in red
. Included with each lineup is the eyewitness's written expression of certainty in their decision.
Your task will be to translate the eyewitness's written expression onto a numeric confidence scale. Before you rate the actual lineup, you will be shown an example of this task involving a yellow smiley face that the eyewitness definitely saw. Keep in mind that for the actual lineup, the suspect may or may not have appeared.
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