Figure 3
From: Melody complexity of infants’ cry and non-cry vocalisations increases across the first six months

Bubble plot of the proportion of complex melodies in non-cry vocalisations over age together with the mean prediction line derived from the final multi-level mixed effects logistic regression model. Note: the bubble size gives the relative number. Here, the median bubble size represented n = 102, with Q1 = 45, Q3 = 143 and range: 2–347.