Fig. 3From: Trajectories of imitation skills in preschoolers with autism spectrum disordersImitation trajectories over time in the ASD and TD groups. The trajectory on the group level (solid lines, red = ASD, blue = TD) is obtained using mixed-effect models [41, 42]. The 95% confidence interval of estimated group-level trajectory is represented in colored bands. Repeated time points of the same subjects are connected with dotted linesBack to article page