Eyewitness metamemory predicts identification performance in biased and unbiased lineups Renan Benigno Saraiva1,2*, Inger Mathilde van Boeijen3, Lorraine Hope1, Robert Horselenberg2, Melanie Sauerland3, Peter J. van Koppen2,4 1Department of Psychology, University of Portsmouth 2Department of Criminal Law and Criminology, Maastricht University 3Department of Clinical Psychological Science, Maastricht University 4Department of Criminal Law and Criminology, VU University Amsterdam *Corresponding author: Renan Benigno Saraiva. Department of Psychology, Faculty of Science, University of Portsmouth, United Kingdom (
[email protected]). Note: This paper has not yet been peer-reviewed. Please contact the authors before citing. Acknowledgements: This research was supported by a fellowship award from the Erasmus Mundus Joint Doctorate Program The House of Legal Psychology (EMJD-LP) with Framework Partnership Agreement (FPA) 2013-0036 and Specific Grant Agreement (SGA) 2013-0036. Metamemory and Eyewitness Identification 1 Abstract Distinguishing accurate from inaccurate identifications is a challenging issue in the criminal justice system, especially for biased police lineups. That is because biased lineups undermine the diagnostic value of accuracy postdictors such as confidence and decision time. Here, we aimed to test general and eyewitness-specific self-ratings of memory capacity as potential estimators of identification performance that are unaffected by lineup bias. Participants (N = 744) completed a metamemory assessment consisting of the Multifactorial Metamemory Questionnaire and the Eyewitness Metamemory Scale and took part in a standard eyewitness paradigm. Following the presentation of a mock-crime video, they viewed either biased or unbiased lineups. Self-ratings of discontentment with eyewitness memory ability were indicative of identification accuracy for both biased and unbiased lineups.