Explores the possibility of establishing predictability models for interference as well as ascertaining the degree of competence adult second language learners could achieve before being able to eliminate interference in production of the target language. (CB)

The difficulty with which native English-speaking adults learning French control the distinction between verb aspects has prompted study of the neurological processes that may affect this learning process. It is concluded that it may not be possible to change these basic perception patterns of adult learners. (MSE)