g., Avidan, Tanzer, & Behrmann, 2011; Bate et al., 2008, Bate et al., 2009, Bowles et al., 2009, Crookes and McKone, 2009, Furl et al., 2011 and Rivolta et al., 2010). The CFMT has demonstrated high reliability ( Bowles et al., 2009 and Wilmer et al., 2010b) and both convergent and divergent validity ( Bowles et al., 2009, Dennett et al., 2012, Wilmer et al., 2010a and Wilmer et al., 2010b). Alternate versions MK-1775 purchase of the CFMT have similar psychometric properties so the paradigm appears to be an effective means to assess face memory ( McKone et al., 2011 and Wilmer et al., 2010b). In the first part of the CFMT, participants
are introduced to six target faces and are then tested with forced-choice items consisting of three faces, one of which is a target. For each target face, three test items contain views
identical to those studied in the introduction, five present novel views, and four present novel views with noise. At two points in the test, participants are given the opportunity to review the target faces before proceeding with the next set of trials (for full details see Duchaine & Nakayama, 2006). Given the effectiveness of the CFMT, we adopted its exact design in preparing our face recognition tests for the current study. However, it was necessary to create two new versions of the test given (a) the within-subjects nature of our investigation, and (b) that all the DP participants had already completed the original version in a previous testing session that confirmed their prosopagnosia (see Table 1). The faces used click here in the two new versions of the CFMT were generated using FaceGen, a software package that generates life-like faces while permitting the user absolute control over parameters such as head angle, expression, distinguishing characteristics (e.g., freckles, blemishes), and external features that might cue recognition (e.g., ear shape, hairline). An alternate version of the CFMT also used FaceGen faces, and performance on it was highly correlated with performance on the Silibinin original CFMT (Wilmer, Germine, Loken, et al., 2010). The two new versions of the CFMT were pilot tested prior to onset of
the experiment to ensure they were of equal difficulty. Twenty unimpaired perceivers (10 male, mean age = 20.65 years, SD = 2.85) completed both versions in the same testing session (order of completion was counterbalanced). A 2 (version) × 2 (order) mixed design analysis of variance (ANOVA) confirmed there was no difference in the difficulty of the two versions of the test [version 1: M = 57.50, standard error (SE) = 1.94; version 2: M = 57.05, SE = 2.25], F(1,18) = .115, p = .739, ƞp2 = .006. Further, there was no difference in performance for the test completed first compared to that completed second, irrespective of version, F(1,18) = .019, p = .892, ƞp2 = .001. Finally, the order in which the two versions were completed did not interact with test version, F(1,18) = 1.936, p = .