The effects of different presentation methods on multi-ethnicity face recognition
Two experiments are reported that examine the effect on later recognition of presenting simultaneously several targets of different ethnicity. In experiment 1, a novel target presentation method was used where participants (children, n=65 and young adults, n=62) were shown a stimulus face sheet of four different race faces followed by a sequential larger (target present/absent) multi-ethnic recognition set. In experiment 2 three different sequential presentation methods were compared in young adults (n=225) that consisted of either (i) make decision ('seen before' vs 'not seen before') for each of the faces in the whole sequential recognition set; or (ii) make only 'seen before' decisions for the whole sequential recognition set; or (iii) a separate sequential lineup for each ethnicity where for each lineup the participants saw all the faces in that lineup and then had to make a decision (target present or absent). Own-race faces were more often correctly rejected (and less falsely identified in experiment 2) than other-race faces. For other-race faces, correct recognition decreased when similar foils were presented before targets in the recognition set but this did not occur for own-race faces. The effect of sequential lineup presentation method emerged for other-race faces favouring separate ethnicity lineups.
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