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. Author manuscript; available in PMC: 2023 Jan 1.
Published in final edited form as: Dev Psychol. 2021 Nov 29;58(1):1–16. doi: 10.1037/dev0001280

Table 1.

Descriptive statistics for infant locomotion across the observation period

Pre-walk Sessions Walk Sessions

Walk −2 Walk −1 Walk Onset Walk +1 Walk +2

Infant locomotion (M, SD, range)

Bout type
 Crawling 14.63, 13.81
(0–49)
16.90, 12.72
(0–40)
Crawling 10.37, 8.30
(0–29)
3.03, 4.01
(0–17)
1.90, 2.12
(0–8)
 Upright 12.33, 17.09
(0–66)
19.80, 18.94
(0–72)
Walking 33.10, 26.52
(1–118)
51.30, 25.52
(3–97)
82.33, 31.01
(17–137)