Key points are not available for this paper at this time.
Merril Silverstein, Xuan Chen, Kenneth Heller, Too Much of a Good Thing? Intergenerational Social Support and the Psychological Well-Being of Older Parents, Journal of Marriage and Family, Vol. 58, No. 4 (Nov., 1996), pp. 970-982
Silverstein et al. (Fri,) studied this question.