“…Another way wealth can affect the optimal policy of students is by introducing credit constraints. In my model, students do not face a credit constraint motivated by the evidence in Heckman, Lochner, and Taber (1998), Cameron and Heckman (2001), Keane and Wolpin (2001), Cameron and Taber (2004), Foley, Gallipoli, andGreen (2009), andNielsen, Sorensen, andTaber (2010), which find no (or little) effect of credit constraints in shaping postsecondary enrollment, and Stinebrickner and Stinebrickner (2008), which finds no effect of credit constraints in explaining dropout behavior. 8 In the end, the combination of exponential utility function and no credit constraints simplifies the model considerably.…”