Kylie N. Key

Date of Award


Document Type


Degree Name

Master of Arts (MA)



Committee Chair

Jeffrey Neuschatz

Committee Member

Jodi Price

Committee Member

Aurora Torres


Eyewitness identification, Forensic psychology, Witnesses--Psychology


This study examined response latency and confidence as possible postdictors of witness accuracy in both lineups and showups (one person identification procedure). Witnesses (N = 994) watched a mock crime video and then made an identification decision from a fair lineup, biased lineup, or showup. Response latency, or time between presentation of the identification procedure and identification decision, and confidence in the identification decision were recorded and analyzed. Using Receiver Operating Characteristic (ROC) analysis revealed that the lineups had better discriminability than the showup. As expected, accurate witnesses also made faster identification decisions and were more confident than inaccurate witnesses. Limitations and implications of the study are then discussed.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.