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Means, standard deviations, and ranges of infant-initiated posture repertoire sizes for infants in the LR, HR, and AD groups at 6, 9, 12, and 14 months.
| 6 months | 9 months | 12 months | 14 months | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LR (n=15) | HR (n=15) | AD (n=4) | LR (n=18) | HR (n=16) | AD (n=4) | LR (n=18) | HR (n=17) | AD (n=4) | LR (n=18) | HR (n=18) | AD (n=4) | |
| Mean | 1.93 | 1.93 | 0 | 4.17 | 4.25 | 2.25 | 6.28 | 6.05 | 3.75 | 6.72 | 6.38 | 5.75 |
| SD | 1.22 | 1.22 | 0 | 1.92 | 1.61 | 0.96 | 1.53 | 1.95 | 1.50 | 1.07 | 1.79 | 0.96 |
| Range | 0–4 | 0–4 | 0 | 0–7 | 0–7 | 1–3 | 2–9 | 1–9 | 3–6 | 5–9 | 2–9 | 5–7 |
