Poses four important questions relevant to error diagnosis and correction in computer assisted language learning (CALL). These questions relate to the diagnosis of persistent second language (L2) learner grammar errors, whether these can be corrected, what types of feedback from the computer are most efficient for focusing the students' attention…

Describes a system, provisionally named Pronto, that uses automatic speech recognition for training pronunciation of second languages in adult learners. Methods are included for developing training in Pronto, and results are presented from evaluating classes of speech recognizers for use in different aspects of pronunciation training. (Author/VWL)