Data from a transcript database of 12 children collected in 1-hour samples every month from 1;0 to 3;0 support the hypothesis that there should be strong differences in the frequency and types of errors between pronouns with suppletive nominatives and those without. The suppletive nominative forms "I" and "she" are blocked from overextension in a…

Investigated whether the rate and patterns of pronoun case error were influenced by the composition of an individual pronoun's paradigm. Twenty-nine children ages 2;6 to 4;0 years were audiotaped interacting with their primary caregivers in various settings. Results indicated that 27 children produced case errors. The composition of a pronoun's…