Preliminary data were presented at the American Psychology-Law Society Conference, 2011, Miami, Florida.
The effect of line-up administrator blindness on the recording of eyewitness identification decisions
Article first published online: 22 MAY 2012
© 2012 The British Psychological Society
Legal and Criminological Psychology
Volume 19, Issue 1, pages 69–79, February 2014
How to Cite
Rodriguez, D. N. and Berry, M. A. (2014), The effect of line-up administrator blindness on the recording of eyewitness identification decisions. Legal and Criminological Psychology, 19: 69–79. doi: 10.1111/j.2044-8333.2012.02058.x
- Issue published online: 21 JAN 2014
- Article first published online: 22 MAY 2012
- Received 7 December 2011; revised version received 20 January 2012
Purpose. Line-up administrators’ expectations have been shown to influence eyewitnesses’ identification decisions. Expectations may also influence administrators’ willingness to record witnesses’ decisions as positive identifications.
Methods. Single- and double-blind participant administrators presented a line-up to a confederate witness, who identified either the suspect or a filler.
Results. A hierarchical log-linear analysis revealed an interaction effect of blindness and witness choice on participants’ recording of the identification: Single-blind administrators were more likely to record the confederate's choice as a positive identification when the witness chose the suspect (vs. a filler), whereas double-blind administrators’ records were not influenced by the witness's choice. An interaction between blindness and witness choice also emerged for participant administrators’ witness evaluations. Single-blind administrators rated confederates who chose a filler as significantly less credible than those who chose a suspect; double-blind administrators’ ratings were consistent across photo selection.
Conclusions. Blindness influenced line-up administrators’ record of line-up outcomes. These results add to the growing body of research supporting the use of double-blind line-up administration.