The input ambiguity hypothesis and case blindness: an account of cross-linguistic and intra-linguistic differences in case errors.
Pelham Sabra D·Journal of child language
English-acquiring children frequently make pronoun case errors, while German-acquiring children rarely do. Nonetheless, German-acquiring children frequently make article case errors. It is proposed that when child-directed speech contains a high percentage of case-ambiguous forms, case errors are common in child langua…