Cooney, Teresa M., and Jeong Shin An. Journal of women & aging 18, no. 2 (2006): 3-24.
The study that this article reports examined the tendency of caregiving grandmothers who had living parents or in-laws (G2) to have a higher burden and depression level than those grandmothers who were the eldest generation in their families (G1). After controlling for variables associated with generational positions, the results supported the hypothesis that grandmothers in the G2 generation reported greater burden and depression in their caregiving roles than grandmothers in the G1 generation.