Well, I did it again. I posted before I was finished. Here's the rest of my response. The nativist approach parallels the constructivist model and emphasizes the importance of innate abilities and the interpretations of the individual. There's an understanding of language etched into the brain at birth.
Interventions stress discovery learning.
The role of the instructor is that of guide who responds to the student's use of language rather than that of teacher who is responsible for student learning. Expansion is a primary means of intervening in language acquisition problems and is based upon the belief that the child learns when he is developmentally ready.