These centers are an outgrowth of a style of learning that can go by several names: learner-centered approach, learner autonomy or self-directed learning. These centers exist primarily in Asia, Europe and North America. Use of such facilities and the pedagogical theory they are based upon has its advantages and disadvantages. Proper use can result in a feeling of empowerment and better learning outcomes, but getting to the point where students and teachers can exploit them effectively can be problematic. For this reason, the structure of established self access centers.