highly significantp = 0.025
Both the main effects of Display Orientation (F(1;180) = 57.598, p < 0.001; effect size, eta squared η 2 = 0.567; with greater face response rates for upright orientation) and Gender of Observer (F(1;180) = 9.498, p = 0.004; effect size, η 2 = 0.178; with greater face response rates in females) were highly significant with a significant interaction between these factors (F(1;180) = 5.405, p = 0.025; effect size, η 2 = 0.110).