Gong, Liutang; Zhong, Ruquan; Zou, Heng-fu - China Economics and Management Academy, Central … - 2012
In this paper, we consider a finite-horizon model with the time-additive utility and the time varying discount rate. With the assumption of the concavity of absolute risk tolerance, the concavity of the consumption function has been proved. This result significantly broadens the conclusion of...