“…The main amendment Tinto added to his model was the suggestion that the level of the student's external commitments, such as family and job commitments, affects both the initial and subsequent level of his or her goals and commitments. Tinto's Model of Institutional Departure (1975Departure ( , 1993 has been subject to extensive testing and examination over the last four decades and has been cited in many studies investigating the attrition problem in which the constructs, hypotheses and postulations of the models were empirically used, tested and critiqued (Barnett, 2006;Berger & Braxton, 1998;Braxton & Lien, 2000;Braxton, Shaw, & Johnson, 1997;Brunsden, Davies, Shevlin, & Bracken, 2000;Cabrera et al, 1992;Cabrera et al, 1993;Caison, 2007;Elkins, Braxton, & James, 2000;Liu & Liu, 2000;Longwell-Grice & Longwell-Grice, 2007;Mannan, 2001;McCubbin, 2003;Pascarella, Duby, & Iverson, 1983;Pascarella & Terenzini, 1979, 1983, 1991, 1995Sandiford & Jackson, 2003;Terenzini, Lorang, & Pascarella, 1981). These studies adopted and tested Tinto's model in different college systems and environments, giving the model more credibility and validity.…”