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. Author manuscript; available in PMC: 2018 Mar 8.
Published in final edited form as: Nature. 2017 Jul 12;547(7663):340–344. doi: 10.1038/nature22999

Figure 3. Monozygotic (MZ) twins exhibit high twin-twin concordance in eye-looking, whether watching the same or different video stimuli, evidence of active niche-picking in the goal-directed seeking of social information.

Figure 3

a-d, Paired measures of eye-looking in MZ twins for (a) all video stimuli presenting dyadic interaction, (b) measures collected when both twins watched the same dyadic interaction videos, (c) measures collected when each twin watched different dyadic interaction videos, or (d) measures collected when each twin watched different content categories, showing either dyadic caregiver interaction (twin 1) or triadic peer interaction (twin 2). See Extended Data Figure 6 for stimuli examples. e, Intraclass correlation coefficients and 95% confidence intervals for a-d. f-j, Measures in DZ twins for the same comparisons in a-e. k-o, Measures in age- and sex-matched non-siblings for the same comparisons in a-e.