This study investigated fast mapping in late-talking (LT) toddlers and toddlers with normal language (NL) development matched on age, nonverbal cognition, and maternal education. The fast-mapping task included novel object labels and familiar words. The LT group scored significantly lower than the NL group on novel word comprehension and…

In two studies we investigated 2-year-old children's answers to predicate-focus questions depending on the preceding context. Children were presented with a successive series of short video clips showing transitive actions (e.g., frog washing duck) in which either the action (action-new) or the patient (patient-new) was the changing, and therefore…

Analyzed 104 language samples obtained from 42 different normal language learning children at 15, 19, and 35 months of age for the proportional use of 11 grammatical morphemes. Wide variability was found among the samples in the proportional use of each morpheme. (49 references) (JL)

Twenty-four 12- to 19-month-old children were studied to examine the cognitive basis for the emergence of verbs. Substantial increases in verb comprehension across contexts, abstract cognition, and the ability to engage in symbolic action were observed, suggesting a relationship between underlying cognitive development and increased verb…

Phonetic skills and vocabulary size were investigated in 37 toddlers identified with specific expressive language impairment and 20 comparison toddlers. Results indicate significant differences in numbers of consonant types and tokens, although the most frequently present consonants were consistent across groups. No predictive relationship emerged…