The process of encoding the facial information, the interest topic for witness psychology, is accomplished dependently on several factors, like: the context of the event in which the witness it taking part(Megreya & Burton, 2008); the type of the facial expressions that the targeted person displays (D'Argembeau & Van der Linden, 2011), the level of the witnesses empathy (Bate, Parris, Haslam, Kay, 2009), etc. The present study analyses the performance of recognition by eyewitnesses of faces, which display different facial expressions. The results show that the binomial happy / anger displayed by the subjects, influence significantly the performance of recognition the targeted person's face.
Pavel, F. A., & Iordǎnescu, E. (2012). The influence of facial expressions on recognition performance in facial identity. In Procedia - Social and Behavioral Sciences (Vol. 33, pp. 548–552). https://doi.org/10.1016/j.sbspro.2012.01.181