“…These studies gave rise to validation analyses that focused on identifying constructs with the best set of complementary variables to maximize model explanation (Cabrera et al, 1992;Cabrera, Nora, & Castaneda, 1993;Braxton, Sullivan, and Johnson, 1997), while others concentrated on the impact of specific factors on retention, such as assimilation courses (Hendel, 2001;Sidle & McReynolds, 1999), selected program major (St. John et al 2004;Mau, 2003), admission status (Laden, Matranga, & Peltier, 1999), student ethnicity and gender (Grandy, 1998;Leppel, 2002), classroom-based learning experiences (Tinto, 1997;Braxton, Milem, & Sullivan, 2000), institutional support services (Lau, 2003), intention to leave (Okun, Benin, & Brandt-Williams, 1996), academic and social integration (Beil, Reisen, & Zea, 1999), and pre-collegiate academic preparation (Cambiano, Denny, & De Vore, 2000). Though most studies examine retention at the first-to-second year stage, when students typically depart, the growing use of survival analysis and event history modeling is expanding the focus of student retention beyond the freshmen year (Murtaugh, Burns, & Schuster, 1999;Ishitani & DesJardins, 2002;DesJardins, 2003).…”