PSYCH 3CC3 Lecture Notes - Lecture 4: Negative Feedback, Eyewitness Identification, Positive Feedback
19 Mar 2019
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Document Summary
Brown, deffenbacher & sturgill (1977): first demonstration of "mugshot exposure effect". Asked whether each a "suspect" and for confidence: 72% of suspects correctly identified, 45% false alarms (non-suspect called suspect, no correlation between confidence and accuracy; equal confidence in accurate and inaccurate judgement. Mistakes that familiarity for presence at crime scene. Essential a case of source confusion: commitment: incorrect foil chosen from mugshots; witness wants to be consistent, so picks same foil from lineup. Lineup instructions: biased: "see if you recognize the offender in the lineup. " Presumes presence of offender in lineup the lineup. 90% still assume presence of offender in lineup (memon, gabbert &hope, 2004) Lineup composition:: unbiased: "see if you recognize the offender, who may not be in the lineup, lineup composition, 1. Match to description: foils chosen to match description given by witness. Match to offender: foils chosen to match the actual appearance of the suspect/offender.
