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. Author manuscript; available in PMC: 2014 Jun 19.
Published in final edited form as: Nature. 2013 Nov 6;504(7480):427–431. doi: 10.1038/nature12715

Extended Data Figure 2. Developmental differences in visual fixation between 2 and 6 months of age.

Extended Data Figure 2

Raw data for eyes fixation (a–c), mouth fixation (d–f), body fixation (g–i), and object fixation (j–l) between 2 and 6 months for typically-developing infants (in blue) and infants later diagnosed with autism spectrum disorders (in red). Darkly shaded data markers indicate the interquartile range (spanning 25th to 75th percentiles). Data show significant associations with chronological age, but the slopes of the associations differ for ASD and TD outcome groups, with significant interactions of Diagnosis by Age for eyes, F(1,787.928) = 9.27, P = 0.002; for body, F(1,25.557) = 5.88, P = 0.023; and for object, F(1,21.947) = 5.24, P = 0.032; but not for mouth, F(1,47.298) = 0.019, P = 0.89. Analyses by HLM. Plots in c, f, i, and l show mean trend lines and 95% CI.