Fig. 1: The face pop-out paradigm—illustrative set-up and primary looking measures data plots.
From: Infants’ looking preferences for social versus non-social objects reflect genetic variation
a, An infant viewing one trial of the face pop-out task. Illustration by author A. M. P. b, Raincloud plots54 (centre lines represent the median, box limits represent upper and lower quartile, whiskers represent 1.5× interquartile range, and outliers are not presented) of the three primary looking measures derived from the task, across 536 5-month-old infants: face orienting (mean was significantly above chance level, highlighted as a dashed vertical line; one-sample two-tailed VTwin 1(273) = 25,558, P < 0.001, d = 0.54, 95% CI 0.25 to 0.33; VTwin 2(261) = 23,159, P < 0.001, d = 0.49, 95% CI 0.25 to 0.33), face preference (mean was significantly above chance level, highlighted as a dashed vertical line, tTwin 1(273) = 28.29, P < 0.001, d = 1.71, 95% CI 0.42 to 0.46; tTwin 2(261) = 26.31, P < 0.001, d = 1.63, 95% CI 0.41 to 0.45), and efficiency of visual exploration (number of objects explored during the first 10 s of trial).
