Although several theories have been advanced to explain the college persistence process [6, 44, 45, 50, 52], only two theories have provided a comprehensive framework on college departure decisions. These two theoretical frameworks are
Tinto's [50, 52] Student Integration Model and Bean's  Student Attrition Model. A review of the literature indicates that the Student Integration Model, for instance, has prompted a steady line of research expanding over a decade [see, for example, 37, 42, 30, 35, 24, 46, 18]. This research has validated Tinto's model across different types of institutions with differing student popula tions. In tum, the Student Attrition Model [4, 5, 6, 7, 10] has also been proven to be valid in explaining student persistence behavior at tradi tional institutions [3, 4, 6, 7, 10, 18], while modifications to the model have been incorporated to explain the persistence process among non traditional students [9, 26].