Discusses Rispoli's data on a model of pronoun case errors in child English, arguing that his claim that overextensions of he and him are antagonistic is inaccurate and his explanation for why her subjects are more frequent than other errors is insufficient. Discusses an account in terms of relative input frequencies, suggesting the fundamental…

Found dissociations between regular and irregular inflectional processes in the formation of English past tenses, German noun plurals, and German participles. Children's inflectional errors include using regular patterns for irregular forms. Some linguistic processes, such as forming compound words, are sensitive to the distinction between regular…