Date of Award


Document Type


Degree Name

Master of Arts (MA)



Committee Chair

Jeffrey Neuschatz

Committee Member

Jodi Price

Committee Member

Dianhan Zheng


Eyewitness identification, Witnesses--Psychology, Forensic psychology


The present study investigated the influence of jailhouse informant testimony on eyewitness identifications and self – reported confidence. Participants watched a video of an actual armed robbery and, after, made an identification decision from a photo lineup. Except for those in the no – feedback control condition, all participants then read that certain lineup members either confessed to the crime, denied involvement or were implicated by a jailhouse informant. Jailhouse informant testimony implicating the identified lineup member led participants to have higher confidence in their identification. In contrast, jailhouse informant testimony implicating one of the unidentified lineup members led participants to have lower confidence in their initial identification, and it led 80% to identify a different lineup member when given the chance. These results suggest that jailhouse informant testimony can influence eyewitnesses’ confidence and their identification decisions.



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