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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Evol Hum Behav. 2014 Aug 21;36(1):25–31. doi: 10.1016/j.evolhumbehav.2014.08.003

Figure 2.

Figure 2

In Experiment 1, female but not male macaques looked longer at a male scrotum on a red background compared to a male scrotum on a blue background or a seashell on either color background, or compared to the looking behavior of males. * = the interaction term [Female]*[Scrotum Red], labeled as Macaque Red on the chart, was significant. In Experiment 2, there were no significant differences in looking-time across conditions. Bars represent mean looking duration, and error bars represent 95% C.I.