Table 1.
Infant and adult vocalization type codes.
Table 2.
Correlations of coded variables with receptive and productive vocabulary.
Fig 1.
Adult like-sound responding and infant canonical vocalizations predicting infant productive vocabulary.
Infant productive vocabulary for low (-1 SD from the mean) and high (+1 SD from the mean) levels of Adult Like-Sound Responding (low = 0.20, high = 3.55 per 5-minutes) and Infant Canonical Vocalizations (low = 2.00, high = 18.88 per 5-minutes) based on regression analysis presented in Table 3. Numbers in parentheses are unstandardized simple slopes. (** = p ≤ .01).
Table 3.
Multiple regression with adult like-sound responding predicting productive vocabulary.
Table 4.
Multiple regression with adult like-sound sequences predicting productive vocabulary.
Fig 2.
Adult like-sound canonical sequences association with infant productive vocabulary.
Linear associations between the total raw frequencies of Canonical—Imitation—Canonical (C-I-C), Canonical—Recast—Canonical (C-R-C), and Canonical—Expansion—Canonical (C-E-C) sequences and Infant Productive MCDI scores. See Supplemental Online Materials for scatterplots.