Figure 1From: Parental phonological memory contributes to prediction of outcome of late talkers from 20 months to 4 years: a longitudinal study of precursors of specific language impairmentNormative data on language milestones from Neligan and Prudham [2]. Note that for Words, the interval between the 50th and 95th percentile is considerably greater than that between 5th and 50th percentile.Back to article page