Purpose: Many typically developing children first use inflections such as "-ed" with verb predicates whose meanings are compatible with the functions of the inflection (e.g., using "-ed" when describing events of brief duration with clear end points, such as "dropped"). This tendency is assumed to be beneficial for…

A group of preschool-aged children with specific language impairment (SLI), a group of typically developing children matched for age (TD-A), and a group of younger typically developing children matched for mean length of utterance (TD-MLU) were presented with novel verbs in contexts that required them to inflect with past tense "-ed."…