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. Author manuscript; available in PMC: 2011 Apr 13.
Published in final edited form as: J Comp Psychol. 2010 Nov;124(4):343–350. doi: 10.1037/a0020545

Figure 3.

Figure 3

An illustration of the matching-to-sample (MTS) procedure. In (a) subjects orient to the sample image, and adult male. Once contacted, two comparison images appear (b) and subjects must select the comparison image that most resembles the sample. The correct choice is the face on the left, another photograph of the sample male (a), and the nonmatch is an unrelated male of same approximate age.