ABSTRACT
In addition to the various aspects of language that must be learned in ISLA, it is also important to consider the contexts in which ISLA can take place because different contexts provide different challenges and advantages for L2 learning. The fi rst chapter made a distinction between instructed and uninstructed L2 acquisition, with the primary difference between the two contexts being that in the former there is some systematic attempt to manipulate the L2 learning process. Thus, even if L2 learning does not occur inside the four walls of a classroom, it is still of interest to ISLA if there is some manipulation of the learning process. The degree of manipulation can vary from very little to considerable.
