From: Infants later diagnosed with autism have lower canonical babbling ratios in the first year of life
 | 6 Months | 12 Months | ||||
---|---|---|---|---|---|---|
HR-ASD | HR-Neg | LR | HR-ASD | HR-Neg | LR | |
Recording duration | 13.14 (2.95), 8.08–18.80 | 13.06 (3.16), 7.07–23.25 | 13.35 (3.72), 7.87–28.54 | 20.33 (6.18), 7.79–38.31 | 20.23 (4.99), 8.90–37.49 | 19.27 (3.99), 9.42–32.78 |
Number of speech-like vocalizations | 25.78 (19.70), 3–81 | 20.87 (16.01), 2–91 | 17.84 (13.82), 2–83 | 31.25 (26.78), 6–185 | 34.78 (17.82), 2–177 | 32.52 (14.41), 9–127 |
Number of syllables | 49.91 (38.41), 7–178 | 36.60 (32.57), 2–201 | 34.34 (33.69), 2–181 | 54.73 (40.40), 8–584 | 64.97 (33.74), 4–309 | 59.07 (29.95), 10–353 |
Number of canonical syllables | 1.65 (2.29), 0–12 | 1.09 (1.87), 0–11 | 1.24 (2.37), 0–14 | 9.28 (10.58), 0–130 | 16.01 (15.82), 0–175 | 14.17 (14.84), 0–203 |
Canonical babbling ratio | 0.03 (0.04), 0–0.17 | 0.02 (0.04), 0–0.20 | 0.02 (0.03), 0–0.12 | 0.16 (0.12), 0–0.42 | 0.22 (0.15), 0–0.63 | 0.22 (0.16), 0–0.58 |
Number of reduplicated utterances | 0.10 (0.31), 0–2 | 0.07 (0.24), 0–1 | 0.12 (0.36), 0–2 | 0.82 (1.07), 0–9 | 1.63 (2.09), 0–24 | 1.62 (2.27), 0–20 |
Number of variegated utterances | 0.14 (0.31), 0–1 | 0.03 (0.14), 0–1 | 0.05 (0.20), 0–1 | 0.96 (1.68), 0–21 | 1.87 (2.81), 0–35 | 1.46 (2.53), 0–38 |