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. 2022 Dec 7;42(49):9211–9226. doi: 10.1523/JNEUROSCI.0859-22.2022

Figure 1.

Figure 1.

Behavioral data from the HCP participants (n = 823) show a bias toward “Social” responses. a, Number of responses per type (“Social”, “Unsure”, “Non-social”) for each animation (sorted from most to least “Social”). b, Percentages of “Social” and “Non-social” responses. “Social” responses were more frequent (t = 9.96, p < 10−21, paired t test). c, Signal detection theory metric criterion c across participants based on experimenter-assigned labels. Mean criterion was negative (c¯ = –0.05, Wilcoxon signed-rank test statistic, 26813; p < 10−17), indicating a bias toward false alarms (i.e., declaring an animation labeled Random by experimenters as “Social”). d, Response time for “Social” and “Non-social” responses. “Social” responses tended to be quicker (Wilcoxon signed-rank test statistic, 144885; p < 10−3). e, “Unsure” responses for animations labeled Mental and Random by experimenters. There was a higher percentage of “Unsure” responses for Random animations (LMEM, Est. = –2.15, p < .005); **p < 0.001, ***p < 0.0001.