“…Moreover, walking infants see more of the environment (Kretch et al, in press), share objects with caregivers in more varied ways (Karasik et al, 2011), and cover more ground (Adolph et al, 2012). For infants at risk for motor delays, encouraging independent mobility as early as possible whether through upright walking, crawling, or assistive devices (e. g., Huang, Ragonesi, Stoner, Peffley, & Galloway, 2014) is likely the best course of action. Future research should investigate whether crawling, sitting, and transitions between them create unique perceptual experiences that impact early learning.…”