Contrastive analysis a priori predicts facts of possible errors in learning a second language that contrastive analysis a posteriori cannot explain. In a study of relative clause formation, the latter approach shows that students have no trouble, whereas the former approach shows the task to be so difficult that they avoid it. (AG)

A study of certain aspects of second language learning among three university students, all in an advanced ESL class at UCLA. An error analysis of written verb forms was undertaken. An examination of correction revealed that it was neither systematic nor enlightened enough to actually influence error production. (Author/RM)